From f2a34637cb771048e9e879584a048feb180388dd Mon Sep 17 00:00:00 2001
From: Mihai Calin Luca <mihaicalin.luca10@gmail.com>
Date: Wed, 12 Jun 2024 12:29:21 +0200
Subject: [PATCH 01/20] initial impl and test

---
 .../tests/big_float_scenario_rs_test.rs       | 13 +++++++++
 .../base/src/types/managed/basic/big_float.rs | 29 +++++++++++++++++--
 .../types/managed/wrapped/managed_decimal.rs  |  2 +-
 .../scenario/tests/managed_decimal_test.rs    |  4 +--
 4 files changed, 43 insertions(+), 5 deletions(-)

diff --git a/contracts/feature-tests/big-float-features/tests/big_float_scenario_rs_test.rs b/contracts/feature-tests/big-float-features/tests/big_float_scenario_rs_test.rs
index 66ca09ab86..9aa3dc14dd 100644
--- a/contracts/feature-tests/big-float-features/tests/big_float_scenario_rs_test.rs
+++ b/contracts/feature-tests/big-float-features/tests/big_float_scenario_rs_test.rs
@@ -56,6 +56,19 @@ fn big_float_overflow_test_rs() {
     assert_eq!(forth, &BigUint::from(2184473079534488064u64));
 }
 
+#[test]
+fn big_float_ln_test_rs() {
+    let fixed = BigFloat::<StaticApi>::from_frac(23i64, 2i64);
+
+    let ln_fixed = fixed.ln(BigUint::from(10u64)); // precision of 10 decimal points
+
+    println!("{ln_fixed:?}");
+    assert_eq!(
+        ln_fixed,
+        BigFloat::from_frac(31355146488i64, 10_000_000_000i64)
+    );
+}
+
 #[test]
 fn big_float_new_from_big_int_rs() {
     world().run("scenarios/big_float_new_from_big_int.scen.json");
diff --git a/framework/base/src/types/managed/basic/big_float.rs b/framework/base/src/types/managed/basic/big_float.rs
index 934bd2c636..64c4515d4e 100644
--- a/framework/base/src/types/managed/basic/big_float.rs
+++ b/framework/base/src/types/managed/basic/big_float.rs
@@ -168,8 +168,33 @@ impl<M: ManagedTypeApi> BigFloat<M> {
         (self * denominator).trunc()
     }
 
-    pub fn to_managed_decimal<T: Decimals>(self, decimals: T) -> ManagedDecimal<M, T> {
-        ManagedDecimal::<M, T>::from_big_float(self, decimals)
+    pub fn to_managed_decimal<T: Decimals>(&self, decimals: T) -> ManagedDecimal<M, T> {
+        ManagedDecimal::<M, T>::from_big_float(&self, decimals)
+    }
+
+    pub fn ln(&self, precision: BigUint<M>) -> Self {
+        // find the highest power of 2 less than or equal to self
+        let mng_dec = self
+            .to_fixed_point(&BigFloat::from(precision))
+            .into_big_uint()
+            .unwrap_or_sc_panic("can't calculate ln for this number");
+
+        let log2 = mng_dec.log2(); // most significant bit
+        let divisor = BigFloat::from(1 << log2);
+        let x = self / &divisor; // normalize to [1.0, 2.0]
+
+        let ln_of_2 = BigFloat::from_frac(69314718i64, 100_000_000i64); // 0.69314718 8 decimals
+        let first = BigFloat::from_frac(17417939i64, 10_000_000i64); // 1.7417939, 7 decimals
+        let second = BigFloat::from_frac(28212026i64, 10_000_000i64); // 2.8212026, 7 decimals
+        let third = BigFloat::from_frac(14699568i64, 10_000_000i64); // 1.4699568, 7 decimals
+        let fourth = BigFloat::from_frac(44717955i64, 100_000_000i64); // 0.44717955, 8 decimals
+        let fifth = BigFloat::from_frac(56570851i64, 1_000_000_000i64); // 0.056570851, 9 decimals
+
+        // approximating polynom to get the result
+        let result =
+            (((fourth - fifth * x.clone()) * x.clone() - third) * x.clone() + second) * x - first;
+        let add_member = BigFloat::from_big_uint(&BigUint::from(log2)) * ln_of_2;
+        result + add_member
     }
 }
 
diff --git a/framework/base/src/types/managed/wrapped/managed_decimal.rs b/framework/base/src/types/managed/wrapped/managed_decimal.rs
index 89a7c47ca9..fb31e80e58 100644
--- a/framework/base/src/types/managed/wrapped/managed_decimal.rs
+++ b/framework/base/src/types/managed/wrapped/managed_decimal.rs
@@ -126,7 +126,7 @@ impl<M: ManagedTypeApi, D: Decimals> ManagedDecimal<M, D> {
     }
 
     pub fn from_big_float<T: Decimals>(
-        big_float: BigFloat<M>,
+        big_float: &BigFloat<M>,
         num_decimals: T,
     ) -> ManagedDecimal<M, T> {
         let scaling_factor: &BigUint<M> = &num_decimals.scaling_factor();
diff --git a/framework/scenario/tests/managed_decimal_test.rs b/framework/scenario/tests/managed_decimal_test.rs
index cbe701c9cf..ea862953e7 100644
--- a/framework/scenario/tests/managed_decimal_test.rs
+++ b/framework/scenario/tests/managed_decimal_test.rs
@@ -64,10 +64,10 @@ pub fn test_managed_decimal() {
 
     let float_1 = BigFloat::<StaticApi>::from_frac(3i64, 2i64);
     let fixed_float_1 = ManagedDecimal::<StaticApi, ConstDecimals<1>>::from_big_float(
-        float_1.clone(),
+        &float_1,
         ConstDecimals::<1>,
     );
-    let fixed_float_2 = ManagedDecimal::<StaticApi, NumDecimals>::from_big_float(float_1, 1usize);
+    let fixed_float_2 = ManagedDecimal::<StaticApi, NumDecimals>::from_big_float(&float_1, 1usize);
 
     assert_eq!(
         fixed_float_1,

From fada5b36dd01bb2a6266f356cd48e8230ee3b290 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Wed, 12 Jun 2024 18:32:39 +0300
Subject: [PATCH 02/20] ManagedDecimal - SCDisplay, Display, Debug

---
 .../types/managed/wrapped/managed_decimal.rs  | 33 +++++++++++++++++--
 .../scenario/tests/managed_decimal_test.rs    |  6 ++--
 2 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/framework/base/src/types/managed/wrapped/managed_decimal.rs b/framework/base/src/types/managed/wrapped/managed_decimal.rs
index fb31e80e58..2ca276ca9c 100644
--- a/framework/base/src/types/managed/wrapped/managed_decimal.rs
+++ b/framework/base/src/types/managed/wrapped/managed_decimal.rs
@@ -4,9 +4,11 @@ use crate::{
         const_handles, use_raw_handle, BigFloatApiImpl, BigIntApiImpl, ManagedTypeApi,
         StaticVarApiImpl,
     },
+    formatter::{FormatBuffer, FormatByteReceiver, SCDisplay},
     types::{BigFloat, BigUint},
 };
 
+use alloc::string::ToString;
 use multiversx_sc_codec::{
     DecodeError, DecodeErrorHandler, EncodeErrorHandler, NestedDecode, NestedDecodeInput,
     NestedEncode, NestedEncodeOutput, TopDecode, TopDecodeInput, TopEncode, TopEncodeOutput,
@@ -17,7 +19,7 @@ use core::{
     ops::{Add, Deref, Div, Mul, Sub},
 };
 
-use super::ManagedRef;
+use super::{ManagedBufferCachedBuilder, ManagedRef};
 
 fn scaling_factor<M: ManagedTypeApi>(
     num_decimals: NumDecimals,
@@ -71,7 +73,7 @@ impl<const DECIMALS: NumDecimals> Decimals for ConstDecimals<DECIMALS> {
     }
 }
 
-#[derive(Debug, Clone)]
+#[derive(Clone)]
 pub struct ManagedDecimal<M: ManagedTypeApi, D: Decimals> {
     data: BigUint<M>,
     decimals: D,
@@ -402,3 +404,30 @@ impl<M: ManagedTypeApi, const DECIMALS: NumDecimals> TypeAbi
         false
     }
 }
+impl<M: ManagedTypeApi, D: Decimals> SCDisplay for ManagedDecimal<M, D> {
+    fn fmt<F: FormatByteReceiver>(&self, f: &mut F) {
+        let sf = self.decimals.scaling_factor();
+        let temp = &self.data / sf.deref();
+        temp.fmt(f);
+        f.append_bytes(b".");
+        let temp = &self.data % sf.deref();
+        temp.fmt(f);
+    }
+}
+
+impl<M: ManagedTypeApi, D: Decimals> core::fmt::Display for ManagedDecimal<M, D> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        let mut result = ManagedBufferCachedBuilder::<M>::new_from_slice(&[]);
+        result.append_display(self);
+        core::fmt::Display::fmt(&result.into_managed_buffer(), f)
+    }
+}
+
+impl<M: ManagedTypeApi, D: Decimals> core::fmt::Debug for ManagedDecimal<M, D> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        f.debug_struct("ManagedDecimal")
+            .field("handle", &self.data.handle.clone())
+            .field("number", &self.to_string())
+            .finish()
+    }
+}
diff --git a/framework/scenario/tests/managed_decimal_test.rs b/framework/scenario/tests/managed_decimal_test.rs
index ea862953e7..ec7d29fd9d 100644
--- a/framework/scenario/tests/managed_decimal_test.rs
+++ b/framework/scenario/tests/managed_decimal_test.rs
@@ -63,10 +63,8 @@ pub fn test_managed_decimal() {
     );
 
     let float_1 = BigFloat::<StaticApi>::from_frac(3i64, 2i64);
-    let fixed_float_1 = ManagedDecimal::<StaticApi, ConstDecimals<1>>::from_big_float(
-        &float_1,
-        ConstDecimals::<1>,
-    );
+    let fixed_float_1 =
+        ManagedDecimal::<StaticApi, ConstDecimals<1>>::from_big_float(&float_1, ConstDecimals::<1>);
     let fixed_float_2 = ManagedDecimal::<StaticApi, NumDecimals>::from_big_float(&float_1, 1usize);
 
     assert_eq!(

From 20acd9ecdd649378733d5f82f356cae3dca96ba6 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Wed, 12 Jun 2024 18:33:28 +0300
Subject: [PATCH 03/20] BigFloat - ln fix

---
 .../tests/big_float_scenario_rs_test.rs       | 16 ++++----
 .../base/src/types/managed/basic/big_float.rs | 38 +++++++++++--------
 .../src/types/managed/basic/big_float_cmp.rs  |  7 ++++
 3 files changed, 36 insertions(+), 25 deletions(-)

diff --git a/contracts/feature-tests/big-float-features/tests/big_float_scenario_rs_test.rs b/contracts/feature-tests/big-float-features/tests/big_float_scenario_rs_test.rs
index 9aa3dc14dd..3879706111 100644
--- a/contracts/feature-tests/big-float-features/tests/big_float_scenario_rs_test.rs
+++ b/contracts/feature-tests/big-float-features/tests/big_float_scenario_rs_test.rs
@@ -58,15 +58,13 @@ fn big_float_overflow_test_rs() {
 
 #[test]
 fn big_float_ln_test_rs() {
-    let fixed = BigFloat::<StaticApi>::from_frac(23i64, 2i64);
-
-    let ln_fixed = fixed.ln(BigUint::from(10u64)); // precision of 10 decimal points
-
-    println!("{ln_fixed:?}");
-    assert_eq!(
-        ln_fixed,
-        BigFloat::from_frac(31355146488i64, 10_000_000_000i64)
-    );
+    let x = BigFloat::<StaticApi>::from(23i64);
+    let ln_x = x.ln();
+    assert_eq!(ln_x.to_managed_decimal(9usize).to_string(), "3.135514648");
+    assert!(ln_x.is_close(
+        &BigFloat::from_frac(3135514648, 1_000_000_000), // 3.135514648
+        &BigFloat::from_frac(1, 1_000_000_000)
+    ));
 }
 
 #[test]
diff --git a/framework/base/src/types/managed/basic/big_float.rs b/framework/base/src/types/managed/basic/big_float.rs
index 64c4515d4e..4c363690aa 100644
--- a/framework/base/src/types/managed/basic/big_float.rs
+++ b/framework/base/src/types/managed/basic/big_float.rs
@@ -93,7 +93,6 @@ big_float_conv_num! {i16}
 big_float_conv_num! {i8}
 
 impl<M: ManagedTypeApi> BigFloat<M> {
-    #[inline]
     pub fn neg(&self) -> Self {
         let new_bf_handle: M::BigFloatHandle =
             use_raw_handle(M::static_var_api_impl().next_handle());
@@ -101,7 +100,13 @@ impl<M: ManagedTypeApi> BigFloat<M> {
         BigFloat::from_handle(new_bf_handle)
     }
 
-    #[inline]
+    pub fn abs(&self) -> Self {
+        let new_bf_handle: M::BigFloatHandle =
+            use_raw_handle(M::static_var_api_impl().next_handle());
+        M::managed_type_impl().bf_abs(new_bf_handle.clone(), self.handle.clone());
+        BigFloat::from_handle(new_bf_handle)
+    }
+
     pub fn from_big_uint(big_uint: &BigUint<M>) -> Self {
         let new_bf_handle: M::BigFloatHandle =
             use_raw_handle(M::static_var_api_impl().next_handle());
@@ -109,7 +114,6 @@ impl<M: ManagedTypeApi> BigFloat<M> {
         BigFloat::from_handle(new_bf_handle)
     }
 
-    #[inline]
     pub fn from_big_int(big_int: &BigInt<M>) -> Self {
         let new_bf_handle: M::BigFloatHandle =
             use_raw_handle(M::static_var_api_impl().next_handle());
@@ -169,31 +173,33 @@ impl<M: ManagedTypeApi> BigFloat<M> {
     }
 
     pub fn to_managed_decimal<T: Decimals>(&self, decimals: T) -> ManagedDecimal<M, T> {
-        ManagedDecimal::<M, T>::from_big_float(&self, decimals)
+        ManagedDecimal::<M, T>::from_big_float(self, decimals)
     }
 
-    pub fn ln(&self, precision: BigUint<M>) -> Self {
+    pub fn ln(&self) -> Self {
         // find the highest power of 2 less than or equal to self
-        let mng_dec = self
-            .to_fixed_point(&BigFloat::from(precision))
+        let trunc_val = self.trunc();
+        let trunc_val_unsigned = trunc_val
             .into_big_uint()
-            .unwrap_or_sc_panic("can't calculate ln for this number");
-
-        let log2 = mng_dec.log2(); // most significant bit
-        let divisor = BigFloat::from(1 << log2);
+            .unwrap_or_sc_panic("log argument must be positive");
+        let bit_log2 = trunc_val_unsigned.log2(); // aproximate, based on position of the most significant bit
+        let divisor = BigFloat::from(1 << bit_log2);
         let x = self / &divisor; // normalize to [1.0, 2.0]
 
+        debug_assert!(x >= 1);
+        debug_assert!(x <= 2);
+
         let ln_of_2 = BigFloat::from_frac(69314718i64, 100_000_000i64); // 0.69314718 8 decimals
-        let first = BigFloat::from_frac(17417939i64, 10_000_000i64); // 1.7417939, 7 decimals
+        let first = BigFloat::from_frac(-17417939i64, 10_000_000i64); // -1.7417939, 7 decimals
         let second = BigFloat::from_frac(28212026i64, 10_000_000i64); // 2.8212026, 7 decimals
-        let third = BigFloat::from_frac(14699568i64, 10_000_000i64); // 1.4699568, 7 decimals
+        let third = BigFloat::from_frac(-14699568i64, 10_000_000i64); // -1.4699568, 7 decimals
         let fourth = BigFloat::from_frac(44717955i64, 100_000_000i64); // 0.44717955, 8 decimals
-        let fifth = BigFloat::from_frac(56570851i64, 1_000_000_000i64); // 0.056570851, 9 decimals
+        let fifth = BigFloat::from_frac(-56570851i64, 1_000_000_000i64); // -0.056570851, 9 decimals
 
         // approximating polynom to get the result
         let result =
-            (((fourth - fifth * x.clone()) * x.clone() - third) * x.clone() + second) * x - first;
-        let add_member = BigFloat::from_big_uint(&BigUint::from(log2)) * ln_of_2;
+            (((fourth + fifth * x.clone()) * x.clone() + third) * x.clone() + second) * x + first;
+        let add_member = BigFloat::from_big_uint(&BigUint::from(bit_log2)) * ln_of_2;
         result + add_member
     }
 }
diff --git a/framework/base/src/types/managed/basic/big_float_cmp.rs b/framework/base/src/types/managed/basic/big_float_cmp.rs
index d3958667e6..2b342bdb76 100644
--- a/framework/base/src/types/managed/basic/big_float_cmp.rs
+++ b/framework/base/src/types/managed/basic/big_float_cmp.rs
@@ -4,6 +4,13 @@ use crate::api::{use_raw_handle, BigFloatApiImpl, ManagedTypeApi, StaticVarApiIm
 
 use super::{BigFloat, BigInt};
 
+impl<M: ManagedTypeApi> BigFloat<M> {
+    pub fn is_close(&self, other: &Self, abs_tolerance: &Self) -> bool {
+        // TODO: temp handles
+        &(self - other).abs() <= abs_tolerance
+    }
+}
+
 impl<M: ManagedTypeApi> PartialEq for BigFloat<M> {
     #[inline]
     fn eq(&self, other: &Self) -> bool {

From b86ac8e3b05d4c51ae493a0d1fe7e1a9eb0f28a1 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Wed, 12 Jun 2024 19:34:06 +0300
Subject: [PATCH 04/20] BigFloat - ln optimization

---
 .../base/src/types/managed/basic/big_float.rs | 24 ++++++++++---------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/framework/base/src/types/managed/basic/big_float.rs b/framework/base/src/types/managed/basic/big_float.rs
index 4c363690aa..c0a52c8eff 100644
--- a/framework/base/src/types/managed/basic/big_float.rs
+++ b/framework/base/src/types/managed/basic/big_float.rs
@@ -189,18 +189,20 @@ impl<M: ManagedTypeApi> BigFloat<M> {
         debug_assert!(x >= 1);
         debug_assert!(x <= 2);
 
+        let mut result = BigFloat::from_frac(-56570851i64, 1_000_000_000i64); // -0.056570851, 9 decimals;
+        result *= &x;
+        result += BigFloat::from_frac(44717955i64, 100_000_000i64); // 0.44717955, 8 decimals;
+        result *= &x;
+        result += BigFloat::from_frac(-14699568i64, 10_000_000i64); // -1.4699568, 7 decimals;
+        result *= &x;
+        result += BigFloat::from_frac(28212026i64, 10_000_000i64); // 2.8212026, 7 decimals;
+        result *= &x;
+        result += BigFloat::from_frac(-17417939i64, 10_000_000i64); // -1.7417939, 7 decimals;
+
         let ln_of_2 = BigFloat::from_frac(69314718i64, 100_000_000i64); // 0.69314718 8 decimals
-        let first = BigFloat::from_frac(-17417939i64, 10_000_000i64); // -1.7417939, 7 decimals
-        let second = BigFloat::from_frac(28212026i64, 10_000_000i64); // 2.8212026, 7 decimals
-        let third = BigFloat::from_frac(-14699568i64, 10_000_000i64); // -1.4699568, 7 decimals
-        let fourth = BigFloat::from_frac(44717955i64, 100_000_000i64); // 0.44717955, 8 decimals
-        let fifth = BigFloat::from_frac(-56570851i64, 1_000_000_000i64); // -0.056570851, 9 decimals
-
-        // approximating polynom to get the result
-        let result =
-            (((fourth + fifth * x.clone()) * x.clone() + third) * x.clone() + second) * x + first;
-        let add_member = BigFloat::from_big_uint(&BigUint::from(bit_log2)) * ln_of_2;
-        result + add_member
+        result += BigFloat::from(bit_log2 as i32) * ln_of_2;
+
+        result
     }
 }
 

From 0f0bff648fa21e4edd160a7188547ce9b02c5e58 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Thu, 13 Jun 2024 08:04:14 +0300
Subject: [PATCH 05/20] BigFloat - ln optimization

---
 .../base/src/types/managed/basic/big_float.rs      | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/framework/base/src/types/managed/basic/big_float.rs b/framework/base/src/types/managed/basic/big_float.rs
index c0a52c8eff..d618b7f1c7 100644
--- a/framework/base/src/types/managed/basic/big_float.rs
+++ b/framework/base/src/types/managed/basic/big_float.rs
@@ -189,17 +189,19 @@ impl<M: ManagedTypeApi> BigFloat<M> {
         debug_assert!(x >= 1);
         debug_assert!(x <= 2);
 
-        let mut result = BigFloat::from_frac(-56570851i64, 1_000_000_000i64); // -0.056570851, 9 decimals;
+        const DENOMINATOR: i64 = 1_000_000_000;
+
+        let mut result = BigFloat::from_frac(-56570851, DENOMINATOR); // -0.056570851
         result *= &x;
-        result += BigFloat::from_frac(44717955i64, 100_000_000i64); // 0.44717955, 8 decimals;
+        result += BigFloat::from_frac(447179550, DENOMINATOR); // 0.44717955
         result *= &x;
-        result += BigFloat::from_frac(-14699568i64, 10_000_000i64); // -1.4699568, 7 decimals;
+        result += BigFloat::from_frac(-1469956800, DENOMINATOR); // -1.4699568
         result *= &x;
-        result += BigFloat::from_frac(28212026i64, 10_000_000i64); // 2.8212026, 7 decimals;
+        result += BigFloat::from_frac(2821202600, DENOMINATOR); // 2.8212026
         result *= &x;
-        result += BigFloat::from_frac(-17417939i64, 10_000_000i64); // -1.7417939, 7 decimals;
+        result += BigFloat::from_frac(-1741793900, DENOMINATOR); // -1.7417939
 
-        let ln_of_2 = BigFloat::from_frac(69314718i64, 100_000_000i64); // 0.69314718 8 decimals
+        let ln_of_2 = BigFloat::from_frac(693147180, DENOMINATOR); // 0.69314718
         result += BigFloat::from(bit_log2 as i32) * ln_of_2;
 
         result

From 8540cc71eb284c6d959f5d75ead13a30f118b70a Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Thu, 13 Jun 2024 19:41:45 +0300
Subject: [PATCH 06/20] BigUint - ln

---
 .../basic-features/src/big_num_methods.rs     |  2 +-
 .../base/src/types/managed/basic/big_uint.rs  | 51 +++++++++++++++++--
 framework/scenario/tests/big_uint_test.rs     | 10 ++++
 3 files changed, 59 insertions(+), 4 deletions(-)
 create mode 100644 framework/scenario/tests/big_uint_test.rs

diff --git a/contracts/feature-tests/basic-features/src/big_num_methods.rs b/contracts/feature-tests/basic-features/src/big_num_methods.rs
index 086f89761b..c30b8cb56e 100644
--- a/contracts/feature-tests/basic-features/src/big_num_methods.rs
+++ b/contracts/feature-tests/basic-features/src/big_num_methods.rs
@@ -48,7 +48,7 @@ pub trait BigIntMethods {
     }
 
     #[endpoint]
-    fn biguint_overwrite_u64(&self, bu: BigUint, small: u64) -> BigUint {
+    fn biguint_overwrite_u64(&self, mut bu: BigUint, small: u64) -> BigUint {
         bu.overwrite_u64(small);
         bu
     }
diff --git a/framework/base/src/types/managed/basic/big_uint.rs b/framework/base/src/types/managed/basic/big_uint.rs
index 7f9f6bb17b..110a6b46d1 100644
--- a/framework/base/src/types/managed/basic/big_uint.rs
+++ b/framework/base/src/types/managed/basic/big_uint.rs
@@ -10,9 +10,12 @@ use crate::{
         DecodeErrorHandler, EncodeErrorHandler, NestedDecode, NestedDecodeInput, NestedEncode,
         NestedEncodeOutput, TopDecode, TopDecodeInput, TopEncode, TopEncodeOutput, TryStaticCast,
     },
+    contract_base::ErrorHelper,
     formatter::{hex_util::encode_bytes_as_hex, FormatBuffer, FormatByteReceiver, SCDisplay},
-    proxy_imports::ManagedRef,
-    types::{heap::BoxedBytes, ManagedBuffer, ManagedBufferCachedBuilder, ManagedType},
+    types::{
+        heap::BoxedBytes, ConstDecimals, Decimals, ManagedBuffer, ManagedBufferCachedBuilder,
+        ManagedDecimal, ManagedRef, ManagedType,
+    },
 };
 
 use super::cast_to_i64::cast_to_i64;
@@ -176,7 +179,7 @@ impl<M: ManagedTypeApi> BigUint<M> {
     }
 
     #[inline]
-    pub fn overwrite_u64(&self, value: u64) {
+    pub fn overwrite_u64(&mut self, value: u64) {
         Self::set_value(self.handle.clone(), value);
     }
 
@@ -236,6 +239,48 @@ impl<M: ManagedTypeApi> BigUint<M> {
         let api = M::managed_type_impl();
         api.bi_log2(self.handle.clone())
     }
+
+    pub fn ln(&self) -> ManagedDecimal<M, ConstDecimals<9>> {
+        let bit_log2 = self.log2(); // aproximate, based on position of the most significant bit
+        let scaling_factor_9 = ConstDecimals::<9>.scaling_factor();
+        let divisor = BigUint::from(1u64 << bit_log2);
+        let normalized = self * &*scaling_factor_9 / divisor;
+
+        let x = normalized
+            .to_u64()
+            .unwrap_or_else(|| ErrorHelper::<M>::signal_error_with_message("ln internal error"))
+            as i64;
+
+        const DENOMINATOR: i64 = 1_000_000_000;
+
+        // x normalized to [1.0, 2.0]
+        debug_assert!(x >= DENOMINATOR);
+        debug_assert!(x <= 2 * DENOMINATOR);
+
+        let mut result: i64 = -56570851; // -0.056570851
+        result *= x;
+        result /= DENOMINATOR;
+        result += 447179550; // 0.44717955
+        result *= x;
+        result /= DENOMINATOR;
+        result += -1469956800; // -1.4699568
+        result *= x;
+        result /= DENOMINATOR;
+        result += 2821202600; // 2.8212026
+        result *= x;
+        result /= DENOMINATOR;
+        result += -1741793900; // -1.7417939
+
+        const LN_OF_2_SCALE_9: i64 = 693147180; // 0.69314718
+        result += bit_log2 as i64 * LN_OF_2_SCALE_9;
+
+        debug_assert!(result > 0);
+
+        let mut result_bi = normalized; // reuse handle
+        result_bi.overwrite_u64(result as u64);
+
+        ManagedDecimal::const_decimals_from_raw(result_bi)
+    }
 }
 
 impl<M: ManagedTypeApi> Clone for BigUint<M> {
diff --git a/framework/scenario/tests/big_uint_test.rs b/framework/scenario/tests/big_uint_test.rs
new file mode 100644
index 0000000000..d31eba9346
--- /dev/null
+++ b/framework/scenario/tests/big_uint_test.rs
@@ -0,0 +1,10 @@
+use multiversx_sc::types::BigUint;
+use multiversx_sc_scenario::api::StaticApi;
+
+#[test]
+fn test_big_uint_ln() {
+    // ln(23) = 3.1354942159291497
+    let x = BigUint::<StaticApi>::from(23u32);
+    let ln_x = x.ln();
+    assert_eq!(ln_x.to_string(), "3.135514649"); // first 6 decimals are ok
+}

From f2648b76c668092f2604189addb3a6cf3c39d443 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Thu, 13 Jun 2024 20:04:49 +0300
Subject: [PATCH 07/20] BigUint - ln - exploration via tests

---
 framework/scenario/tests/big_uint_test.rs | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/framework/scenario/tests/big_uint_test.rs b/framework/scenario/tests/big_uint_test.rs
index d31eba9346..6c33032a36 100644
--- a/framework/scenario/tests/big_uint_test.rs
+++ b/framework/scenario/tests/big_uint_test.rs
@@ -1,10 +1,22 @@
 use multiversx_sc::types::BigUint;
 use multiversx_sc_scenario::api::StaticApi;
 
+fn assert_big_uint_ln(x: u32, ln_str: &str) {
+    let x = BigUint::<StaticApi>::from(x);
+    let ln_x = x.ln();
+    assert_eq!(ln_x.to_string(), ln_str);
+}
+
 #[test]
 fn test_big_uint_ln() {
-    // ln(23) = 3.1354942159291497
-    let x = BigUint::<StaticApi>::from(23u32);
-    let ln_x = x.ln();
-    assert_eq!(ln_x.to_string(), "3.135514649"); // first 6 decimals are ok
+    assert_big_uint_ln(23, "3.135514649"); // vs. 3.1354942159291497 first 6 decimals are ok
+
+    assert_big_uint_ln(1, "0.60599");
+    assert_big_uint_ln(2, "0.693207779"); // vs. 0.6931471805599453
+    assert_big_uint_ln(3, "1.98595430"); // vs. 1.0986122886681096
+    assert_big_uint_ln(4, "1.386354959"); // vs. 1.3862943611198906
+    assert_big_uint_ln(5, "1.609481340"); // vs. 1.6094379124341003
+    assert_big_uint_ln(6, "1.791742610"); // vs. 1.791759469228055
+
+    assert_big_uint_ln(1000, "6.907784913"); // vs. 6.907755278982137
 }

From 449ef21ac6e73078fa710d1d879e5b9b22f4f089 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Mon, 17 Jun 2024 20:38:37 +0300
Subject: [PATCH 08/20] test fix

---
 contracts/feature-tests/abi-tester/src/abi_test_type.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/contracts/feature-tests/abi-tester/src/abi_test_type.rs b/contracts/feature-tests/abi-tester/src/abi_test_type.rs
index 2928e81c89..c70f1aec42 100644
--- a/contracts/feature-tests/abi-tester/src/abi_test_type.rs
+++ b/contracts/feature-tests/abi-tester/src/abi_test_type.rs
@@ -45,5 +45,6 @@ pub struct OnlyShowsUpInEsdtAttr {
 
 #[derive(TypeAbi)]
 pub struct ManagedDecimalWrapper<M: ManagedTypeApi> {
+    #[allow(dead_code)]
     pub field: ManagedDecimal<M, ConstDecimals<2>>,
 }

From 33870173709bbb92a2ba0c4bde0feac8dc946ffb Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Mon, 17 Jun 2024 20:46:53 +0300
Subject: [PATCH 09/20] copied plotters-wasm-demo to repo

---
 Cargo.lock                          | 959 +++++++++++++++++++++++++---
 Cargo.toml                          |   1 +
 tools/plotter/.gitignore            |   3 +
 tools/plotter/Cargo.toml            |  18 +
 tools/plotter/README.md             |  54 ++
 tools/plotter/src/func_plot.rs      |  31 +
 tools/plotter/src/lib.rs            |  58 ++
 tools/plotter/src/mandelbrot.rs     |  67 ++
 tools/plotter/src/plot3d.rs         |  42 ++
 tools/plotter/start-server.bat      |   8 +
 tools/plotter/start-server.sh       |  23 +
 tools/plotter/www/.gitignore        |   3 +
 tools/plotter/www/bootstrap.js      |  21 +
 tools/plotter/www/index.html        |  42 ++
 tools/plotter/www/index.js          | 103 +++
 tools/plotter/www/package.json      |  36 ++
 tools/plotter/www/style.css         |  55 ++
 tools/plotter/www/webpack.config.js |  14 +
 18 files changed, 1458 insertions(+), 80 deletions(-)
 create mode 100644 tools/plotter/.gitignore
 create mode 100644 tools/plotter/Cargo.toml
 create mode 100644 tools/plotter/README.md
 create mode 100644 tools/plotter/src/func_plot.rs
 create mode 100644 tools/plotter/src/lib.rs
 create mode 100644 tools/plotter/src/mandelbrot.rs
 create mode 100644 tools/plotter/src/plot3d.rs
 create mode 100644 tools/plotter/start-server.bat
 create mode 100755 tools/plotter/start-server.sh
 create mode 100644 tools/plotter/www/.gitignore
 create mode 100644 tools/plotter/www/bootstrap.js
 create mode 100644 tools/plotter/www/index.html
 create mode 100644 tools/plotter/www/index.js
 create mode 100644 tools/plotter/www/package.json
 create mode 100644 tools/plotter/www/style.css
 create mode 100644 tools/plotter/www/webpack.config.js

diff --git a/Cargo.lock b/Cargo.lock
index ec245b66b9..8cd3edc71d 100755
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -66,7 +66,7 @@ version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "once_cell",
  "version_check",
  "zerocopy",
@@ -98,6 +98,21 @@ dependencies = [
  "multiversx-sc-meta-lib",
 ]
 
+[[package]]
+name = "android-tzdata"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
+
+[[package]]
+name = "android_system_properties"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "anstream"
 version = "0.6.14"
@@ -130,9 +145,9 @@ dependencies = [
 
 [[package]]
 name = "anstyle-query"
-version = "1.0.3"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a64c907d4e79225ac72e2a354c9ce84d50ebb4586dee56c82b3ee73004f537f5"
+checksum = "ad186efb764318d35165f1758e7dcef3b10628e26d41a44bc5550652e6804391"
 dependencies = [
  "windows-sys 0.52.0",
 ]
@@ -182,13 +197,13 @@ checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
 
 [[package]]
 name = "backtrace"
-version = "0.3.72"
+version = "0.3.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17c6a35df3749d2e8bb1b7b21a976d82b15548788d2735b9d82f329268f71a11"
+checksum = "5cc23269a4f8976d0a4d2e7109211a419fe30e8d88d677cd60b6bc79c5732e0a"
 dependencies = [
  "addr2line",
  "cc",
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "miniz_oxide",
  "object",
@@ -370,6 +385,12 @@ version = "3.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
 
+[[package]]
+name = "bytemuck"
+version = "1.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78834c15cb5d5efe3452d58b1e8ba890dd62d21907f867f383358198e56ebca5"
+
 [[package]]
 name = "byteorder"
 version = "1.5.0"
@@ -384,9 +405,15 @@ checksum = "514de17de45fdb8dc022b1a7975556c53c86f9f0aa5f534b98977b171857c2c9"
 
 [[package]]
 name = "cc"
-version = "1.0.98"
+version = "1.0.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96c51067fd44124faa7f870b4b1c969379ad32b2ba805aa959430ceaa384f695"
+
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41c270e7540d725e65ac7f1b212ac8ce349719624d7bcff99f8e2e488e8cf03f"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
 [[package]]
 name = "cfg-if"
@@ -429,11 +456,25 @@ dependencies = [
  "multiversx-sc-meta-lib",
 ]
 
+[[package]]
+name = "chrono"
+version = "0.4.38"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a21f936df1771bf62b77f047b726c4625ff2e8aa607c01ec06e5a05bd8463401"
+dependencies = [
+ "android-tzdata",
+ "iana-time-zone",
+ "js-sys",
+ "num-traits",
+ "wasm-bindgen",
+ "windows-targets 0.52.5",
+]
+
 [[package]]
 name = "clap"
-version = "4.5.4"
+version = "4.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90bc066a67923782aa8515dbaea16946c5bcc5addbd668bb80af688e53e548a0"
+checksum = "5db83dced34638ad474f39f250d7fea9598bdd239eaced1bdf45d597da0f433f"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -441,9 +482,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.2"
+version = "4.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae129e2e766ae0ec03484e609954119f123cc1fe650337e155d03b022f24f7b4"
+checksum = "f7e204572485eb3fbf28f871612191521df159bc3e15a9f5064c66dba3a8c05f"
 dependencies = [
  "anstream",
  "anstyle",
@@ -453,9 +494,9 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.5.4"
+version = "4.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "528131438037fd55894f62d6e9f068b8f45ac57ffa77517819645d10aed04f64"
+checksum = "c780290ccf4fb26629baa7a1081e68ced113f1d3ec302fa5948f1c381ebf06c6"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -465,9 +506,15 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "0.7.0"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b82cf0babdbd58558212896d1a4272303a57bdb245c2bf1147185fb45640e70"
+
+[[package]]
+name = "color_quant"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98cc8fbded0c607b7ba9dd60cd98df59af97e84d24e49c8557331cfc26d301ce"
+checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
 [[package]]
 name = "colorchoice"
@@ -543,6 +590,42 @@ version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
 
+[[package]]
+name = "core-graphics"
+version = "0.23.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c07782be35f9e1140080c6b96f0d44b739e2278479f64e02fdab4e32dfd8b081"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "core-graphics-types",
+ "foreign-types 0.5.0",
+ "libc",
+]
+
+[[package]]
+name = "core-graphics-types"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45390e6114f68f718cc7a830514a96f903cccd70d02a8f6d9f643ac4ba45afaf"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "libc",
+]
+
+[[package]]
+name = "core-text"
+version = "20.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9d2790b5c08465d49f8dc05c8bcae9fea467855947db39b0f8145c091aaced5"
+dependencies = [
+ "core-foundation",
+ "core-graphics",
+ "foreign-types 0.5.0",
+ "libc",
+]
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.12"
@@ -558,7 +641,7 @@ version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a97769d94ddab943e4510d138150169a2758b5ef3eb191a9ee688de3e23ef7b3"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
@@ -664,6 +747,16 @@ dependencies = [
  "multiversx-sc-meta-lib",
 ]
 
+[[package]]
+name = "cstr"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68523903c8ae5aacfa32a0d9ae60cadeb764e1da14ee0d26b1f3089f13a54636"
+dependencies = [
+ "proc-macro2",
+ "quote",
+]
+
 [[package]]
 name = "curve25519-dalek"
 version = "3.2.0"
@@ -724,6 +817,27 @@ dependencies = [
  "multiversx-sc-meta-lib",
 ]
 
+[[package]]
+name = "dirs-next"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
+dependencies = [
+ "cfg-if 1.0.0",
+ "dirs-sys-next",
+]
+
+[[package]]
+name = "dirs-sys-next"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "displaydoc"
 version = "0.2.4"
@@ -735,6 +849,27 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "dlib"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "330c60081dcc4c72131f8eb70510f1ac07223e5d4163db481a04a0befcffa412"
+dependencies = [
+ "libloading",
+]
+
+[[package]]
+name = "dwrote"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439a1c2ba5611ad3ed731280541d36d2e9c4ac5e7fb818a27b604bdc5a6aa65b"
+dependencies = [
+ "lazy_static",
+ "libc",
+ "winapi",
+ "wio",
+]
+
 [[package]]
 name = "ed25519"
 version = "1.5.3"
@@ -787,7 +922,7 @@ version = "0.8.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b45de904aa0b010bce2ab45264d0631681847fa7b6f2eaa7dab7619943bc4f59"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
@@ -1005,6 +1140,15 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9fc0510504f03c51ada170672ac806f1f105a88aa97a5281117e1ddc3368e51a"
 
+[[package]]
+name = "fdeflate"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f9bfee30e4dedf0ab8b422f03af778d9612b63f502710fc500a334ebe2de645"
+dependencies = [
+ "simd-adler32",
+]
+
 [[package]]
 name = "first-contract"
 version = "0.0.0"
@@ -1032,19 +1176,71 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "float-ord"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ce81f49ae8a0482e4c55ea62ebbd7e5a686af544c00b9d090bba3ff9be97b3d"
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
+[[package]]
+name = "font-kit"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2845a73bbd781e691ab7c2a028c579727cd254942e8ced57ff73e0eafd60de87"
+dependencies = [
+ "bitflags 2.5.0",
+ "byteorder",
+ "core-foundation",
+ "core-graphics",
+ "core-text",
+ "dirs-next",
+ "dwrote",
+ "float-ord",
+ "freetype-sys",
+ "lazy_static",
+ "libc",
+ "log",
+ "pathfinder_geometry",
+ "pathfinder_simd",
+ "walkdir",
+ "winapi",
+ "yeslogic-fontconfig-sys",
+]
+
 [[package]]
 name = "foreign-types"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
 dependencies = [
- "foreign-types-shared",
+ "foreign-types-shared 0.1.1",
+]
+
+[[package]]
+name = "foreign-types"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d737d9aa519fb7b749cbc3b962edcf310a8dd1f4b67c91c4f83975dbdd17d965"
+dependencies = [
+ "foreign-types-macros",
+ "foreign-types-shared 0.3.1",
+]
+
+[[package]]
+name = "foreign-types-macros"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a5c6c585bc94aaf2c7b51dd4c2ba22680844aba4c687be581871a6f518c5742"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -1053,6 +1249,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 
+[[package]]
+name = "foreign-types-shared"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa9a19cbb55df58761df49b23516a86d432839add4af60fc256da840f66ed35b"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.1"
@@ -1161,6 +1363,17 @@ dependencies = [
  "multiversx-sc-meta-lib",
 ]
 
+[[package]]
+name = "freetype-sys"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e7edc5b9669349acfda99533e9e0bcf26a51862ab43b08ee7745c55d28eb134"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+]
+
 [[package]]
 name = "futures"
 version = "0.3.30"
@@ -1266,7 +1479,7 @@ version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "wasi 0.9.0+wasi-snapshot-preview1",
 ]
@@ -1277,13 +1490,23 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "js-sys",
  "libc",
  "wasi 0.11.0+wasi-snapshot-preview1",
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "gif"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80792593675e051cf94a4b111980da2ba60d4a83e43e0048c5693baab3977045"
+dependencies = [
+ "color_quant",
+ "weezl",
+]
+
 [[package]]
 name = "gimli"
 version = "0.29.0"
@@ -1388,12 +1611,12 @@ dependencies = [
 
 [[package]]
 name = "http-body-util"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0475f8b2ac86659c21b64320d5d653f9efe42acd2a4e560073ec61a155a34f1d"
+checksum = "793429d76616a256bcb62c2a2ec2bed781c8307e797e2598c50010f2bee2544f"
 dependencies = [
  "bytes",
- "futures-core",
+ "futures-util",
  "http",
  "http-body",
  "pin-project-lite",
@@ -1401,9 +1624,9 @@ dependencies = [
 
 [[package]]
 name = "httparse"
-version = "1.8.0"
+version = "1.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
+checksum = "0fcc0b4a115bf80b728eb8ea024ad5bd707b615bfed49e0665b6e0f86fd082d9"
 
 [[package]]
 name = "humantime"
@@ -1431,6 +1654,23 @@ dependencies = [
  "want",
 ]
 
+[[package]]
+name = "hyper-rustls"
+version = "0.27.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ee4be2c948921a1a5320b629c4193916ed787a7f7f293fd3f7f5a6c9de74155"
+dependencies = [
+ "futures-util",
+ "http",
+ "hyper",
+ "hyper-util",
+ "rustls",
+ "rustls-pki-types",
+ "tokio",
+ "tokio-rustls",
+ "tower-service",
+]
+
 [[package]]
 name = "hyper-tls"
 version = "0.6.0"
@@ -1467,14 +1707,157 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "iana-time-zone"
+version = "0.1.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7ffbb5a1b541ea2561f8c41c087286cc091e21e556a4f09a8f6cbf17b69b141"
+dependencies = [
+ "android_system_properties",
+ "core-foundation-sys",
+ "iana-time-zone-haiku",
+ "js-sys",
+ "wasm-bindgen",
+ "windows-core",
+]
+
+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
+dependencies = [
+ "cc",
+]
+
+[[package]]
+name = "icu_collections"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db2fa452206ebee18c4b5c2274dbf1de17008e874b4dc4f0aea9d01ca79e4526"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13acbb8371917fc971be86fc8057c41a64b521c184808a698c02acc242dbf637"
+dependencies = [
+ "displaydoc",
+ "litemap",
+ "tinystr",
+ "writeable",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid_transform"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01d11ac35de8e40fdeda00d9e1e9d92525f3f9d887cdd7aa81d727596788b54e"
+dependencies = [
+ "displaydoc",
+ "icu_locid",
+ "icu_locid_transform_data",
+ "icu_provider",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid_transform_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdc8ff3388f852bede6b579ad4e978ab004f139284d7b28715f773507b946f6e"
+
+[[package]]
+name = "icu_normalizer"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19ce3e0da2ec68599d193c93d088142efd7f9c5d6fc9b803774855747dc6a84f"
+dependencies = [
+ "displaydoc",
+ "icu_collections",
+ "icu_normalizer_data",
+ "icu_properties",
+ "icu_provider",
+ "smallvec",
+ "utf16_iter",
+ "utf8_iter",
+ "write16",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_normalizer_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8cafbf7aa791e9b22bec55a167906f9e1215fd475cd22adfcf660e03e989516"
+
+[[package]]
+name = "icu_properties"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f8ac670d7422d7f76b32e17a5db556510825b29ec9154f235977c9caba61036"
+dependencies = [
+ "displaydoc",
+ "icu_collections",
+ "icu_locid_transform",
+ "icu_properties_data",
+ "icu_provider",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_properties_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67a8effbc3dd3e4ba1afa8ad918d5684b8868b3b26500753effea8d2eed19569"
+
+[[package]]
+name = "icu_provider"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ed421c8a8ef78d3e2dbc98a973be2f3770cb42b606e3ab18d6237c4dfde68d9"
+dependencies = [
+ "displaydoc",
+ "icu_locid",
+ "icu_provider_macros",
+ "stable_deref_trait",
+ "tinystr",
+ "writeable",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_provider_macros"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ec89e9337638ecdc08744df490b221a7399bf8d164eb52a665454e60e075ad6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "idna"
-version = "0.5.0"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
+checksum = "4716a3a0933a1d01c2f72450e89596eb51dd34ef3c211ccd875acdf1f8fe47ed"
 dependencies = [
- "unicode-bidi",
- "unicode-normalization",
+ "icu_normalizer",
+ "icu_properties",
+ "smallvec",
+ "utf8_iter",
 ]
 
 [[package]]
@@ -1493,6 +1876,20 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "image"
+version = "0.24.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5690139d2f55868e080017335e4b94cb7414274c74f1669c84fb5feba2c9f69d"
+dependencies = [
+ "bytemuck",
+ "byteorder",
+ "color_quant",
+ "jpeg-decoder",
+ "num-traits",
+ "png",
+]
+
 [[package]]
 name = "indexmap"
 version = "2.2.6"
@@ -1542,6 +1939,12 @@ version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
 
+[[package]]
+name = "jpeg-decoder"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f5d4a7da358eff58addd2877a45865158f0d78c911d43a5784ceb7bbf52833b0"
+
 [[package]]
 name = "js-sys"
 version = "0.3.69"
@@ -1646,10 +2049,30 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
-name = "libc"
-version = "0.2.155"
+name = "libc"
+version = "0.2.155"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
+
+[[package]]
+name = "libloading"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c2a198fb6b0eada2a8df47933734e6d35d350665a33a3593d7164fa52c75c19"
+dependencies = [
+ "cfg-if 1.0.0",
+ "windows-targets 0.52.5",
+]
+
+[[package]]
+name = "libredox"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
+checksum = "c0ff37bd590ca25063e35af745c343cb7a0271906fb7b37e4813e8f79f00268d"
+dependencies = [
+ "bitflags 2.5.0",
+ "libc",
+]
 
 [[package]]
 name = "linked-list-repeat"
@@ -1674,6 +2097,12 @@ version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
 
+[[package]]
+name = "litemap"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "643cb0b8d4fcc284004d5fd0d67ccf61dfffadb7f75e1e71bc420f4688a3a704"
+
 [[package]]
 name = "local-esdt-and-nft"
 version = "0.0.0"
@@ -1781,9 +2210,15 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.7.2"
+version = "2.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+
+[[package]]
+name = "memory_units"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
+checksum = "8452105ba047068f40ff7093dd1d9da90898e63dd61736462e9cdda6a90ad3c3"
 
 [[package]]
 name = "mime"
@@ -1798,6 +2233,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "87dfd01fe195c66b572b37921ad8803d010623c0aca821bea2302239d155cdae"
 dependencies = [
  "adler",
+ "simd-adler32",
 ]
 
 [[package]]
@@ -2234,9 +2670,9 @@ dependencies = [
 
 [[package]]
 name = "object"
-version = "0.35.0"
+version = "0.36.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8ec7ab813848ba4522158d5517a6093db1ded27575b070f4177b8d12b41db5e"
+checksum = "576dfe1fc8f9df304abb159d767a29d0476f7750fbf8aa7ad07816004a207434"
 dependencies = [
  "memchr",
 ]
@@ -2260,8 +2696,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "95a0481286a310808298130d22dd1fef0fa571e05a8f44ec801801e84b216b1f"
 dependencies = [
  "bitflags 2.5.0",
- "cfg-if",
- "foreign-types",
+ "cfg-if 1.0.0",
+ "foreign-types 0.3.2",
  "libc",
  "once_cell",
  "openssl-macros",
@@ -2370,7 +2806,7 @@ version = "0.9.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "redox_syscall",
  "smallvec",
@@ -2383,6 +2819,25 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8835116a5c179084a830efb3adc117ab007512b535bc1a21c991d3b32a6b44dd"
 
+[[package]]
+name = "pathfinder_geometry"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b7e7b4ea703700ce73ebf128e1450eb69c3a8329199ffbfb9b2a0418e5ad3"
+dependencies = [
+ "log",
+ "pathfinder_simd",
+]
+
+[[package]]
+name = "pathfinder_simd"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebf45976c56919841273f2a0fc684c28437e2f304e264557d9c72be5d5a718be"
+dependencies = [
+ "rustc_version",
+]
+
 [[package]]
 name = "payable-features"
 version = "0.0.0"
@@ -2482,6 +2937,77 @@ version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
 
+[[package]]
+name = "plotters"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a15b6eccb8484002195a3e44fe65a4ce8e93a625797a063735536fd59cb01cf3"
+dependencies = [
+ "chrono",
+ "font-kit",
+ "image",
+ "lazy_static",
+ "num-traits",
+ "pathfinder_geometry",
+ "plotters-backend",
+ "plotters-bitmap",
+ "plotters-svg",
+ "ttf-parser",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "plotters-backend"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "414cec62c6634ae900ea1c56128dfe87cf63e7caece0852ec76aba307cebadb7"
+
+[[package]]
+name = "plotters-bitmap"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7e7f6fb8302456d7c264a94dada86f76d76e1a03e2294ee86ca7da92983b0a6"
+dependencies = [
+ "gif",
+ "image",
+ "plotters-backend",
+]
+
+[[package]]
+name = "plotters-canvas"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "498a82bf654581fa4df6c1bd73e56f8556bdeec5eca5a0989d170ca0728ccace"
+dependencies = [
+ "js-sys",
+ "plotters-backend",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "plotters-svg"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81b30686a7d9c3e010b84284bdd26a29f2138574f52f5eb6f794fc0ad924e705"
+dependencies = [
+ "plotters-backend",
+]
+
+[[package]]
+name = "png"
+version = "0.17.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06e4b0d3d1312775e782c86c91a111aa1f910cbb65e1337f9975b5f9a554b5e1"
+dependencies = [
+ "bitflags 1.3.2",
+ "crc32fast",
+ "fdeflate",
+ "flate2",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.17"
@@ -2704,18 +3230,29 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.5.1"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "469052894dcb553421e483e4209ee581a45100d31b4018de03e5a7ad86374a7e"
+checksum = "c82cf8cff14456045f55ec4241383baeff27af886adb72ffb2162f99911de0fd"
 dependencies = [
  "bitflags 2.5.0",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd283d9651eeda4b2a83a43c1c91b266c40fd76ecd39a50a8c630ae69dc72891"
+dependencies = [
+ "getrandom 0.2.15",
+ "libredox",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
-version = "1.10.4"
+version = "1.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
+checksum = "b91213439dad192326a0d7c6ee3955910425f441d7038e0d6933b0aec5c4517f"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2725,9 +3262,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.6"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b83b8b9847f9bf95ef68afb0b8e6cdb80f498442f5179a29fad448fcc1eaea"
+checksum = "38caf58cc5ef2fed281f89292ef23f6365465ed9a41b7a7754eb4e26496c92df"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2736,15 +3273,15 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.3"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adad44e29e4c806119491a7f06f03de4d1af22c3a680dd47f1e6e179439d1f56"
+checksum = "7a66a03ae7c801facd77a29370b4faec201768915ac14a721ba36f20bc9c209b"
 
 [[package]]
 name = "reqwest"
-version = "0.12.4"
+version = "0.12.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "566cafdd92868e0939d3fb961bd0dc25fcfaaed179291093b3d43e6b3150ea10"
+checksum = "c7d6d2a27d57148378eb5e111173f4276ad26340ecc5c49a4a2152167a2d6a37"
 dependencies = [
  "base64",
  "bytes",
@@ -2757,6 +3294,7 @@ dependencies = [
  "http-body",
  "http-body-util",
  "hyper",
+ "hyper-rustls",
  "hyper-tls",
  "hyper-util",
  "ipnet",
@@ -2800,6 +3338,21 @@ dependencies = [
  "rewards-distribution",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c17fa4cb658e3583423e915b9f3acc01cceaee1860e33d59ebae66adc3a2dc0d"
+dependencies = [
+ "cc",
+ "cfg-if 1.0.0",
+ "getrandom 0.2.15",
+ "libc",
+ "spin",
+ "untrusted",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "ruplacer"
 version = "0.8.2"
@@ -2881,6 +3434,19 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "rustls"
+version = "0.23.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05cff451f60db80f490f3c182b77c35260baace73209e9cdbbe526bfe3a4d402"
+dependencies = [
+ "once_cell",
+ "rustls-pki-types",
+ "rustls-webpki",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "rustls-pemfile"
 version = "2.1.2"
@@ -2897,6 +3463,17 @@ version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "976295e77ce332211c0d24d92c0e83e50f5c5f046d11082cea19f3df13a3562d"
 
+[[package]]
+name = "rustls-webpki"
+version = "0.102.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff448f7e92e913c4b7d4c6d8e4540a1724b319b4152b8aef6d4cf8339712b33e"
+dependencies = [
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.18"
@@ -3110,7 +3687,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4d58a1e1bf39749807d89cf2d98ac2dfa0ff1cb3faa38fbb64dd88ac8013d800"
 dependencies = [
  "block-buffer 0.9.0",
- "cfg-if",
+ "cfg-if 1.0.0",
  "cpufeatures",
  "digest 0.9.0",
  "opaque-debug",
@@ -3122,7 +3699,7 @@ version = "0.10.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "cpufeatures",
  "digest 0.10.7",
 ]
@@ -3200,6 +3777,18 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
 [[package]]
 name = "str-repeat"
 version = "0.0.0"
@@ -3241,9 +3830,20 @@ dependencies = [
 
 [[package]]
 name = "sync_wrapper"
-version = "0.1.2"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7065abeca94b6a8a577f9bd45aa0867a2238b74e8eb67cf10d492bc39351394"
+
+[[package]]
+name = "synstructure"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2047c6ded9c721764247e62cd3b03c09ffc529b2ba5b10ec482ae507a4a70160"
+checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
 
 [[package]]
 name = "system-configuration"
@@ -3272,7 +3872,7 @@ version = "3.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "fastrand",
  "rustix",
  "windows-sys 0.52.0",
@@ -3298,6 +3898,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "tinystr"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9117f5d4db391c1cf6927e7bea3db74b9a1c1add8f7eda9ffd5364f40f57b82f"
+dependencies = [
+ "displaydoc",
+ "zerovec",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.6.0"
@@ -3331,9 +3941,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.37.0"
+version = "1.38.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1adbebffeca75fcfd058afa480fb6c0b81e165a0323f9c9d39c9697e37c46787"
+checksum = "ba4f4a02a7a80d6f274636f0aa95c7e383b912d41fe721a31f29e29698585a4a"
 dependencies = [
  "backtrace",
  "bytes",
@@ -3350,9 +3960,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
+checksum = "5f5ae998a069d4b5aba8ee9dad856af7d520c3699e6159b185c2acd48155d39a"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3369,6 +3979,17 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tokio-rustls"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c7bc40d0e5a97695bb96e27995cd3a08538541b0a846f65bba7a359f36700d4"
+dependencies = [
+ "rustls",
+ "rustls-pki-types",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.7.11"
@@ -3384,9 +4005,9 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.8.13"
+version = "0.8.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4e43f8cc456c9704c851ae29c67e17ef65d2c30017c17a9765b89c382dc8bba"
+checksum = "6f49eb2ab21d2f26bd6db7bf383edc527a7ebaee412d17af4d40fdccd442f335"
 dependencies = [
  "indexmap",
  "serde",
@@ -3406,9 +4027,9 @@ dependencies = [
 
 [[package]]
 name = "toml_edit"
-version = "0.22.13"
+version = "0.22.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c127785850e8c20836d49732ae6abfa47616e60bf9d9f57c43c250361a9db96c"
+checksum = "f21c7aaf97f1bd9ca9d4f9e73b0a6c74bd5afef56f2bc931943a6e1c37e04e38"
 dependencies = [
  "indexmap",
  "serde",
@@ -3488,16 +4109,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
 [[package]]
-name = "typenum"
-version = "1.17.0"
+name = "ttf-parser"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
+checksum = "17f77d76d837a7830fe1d4f12b7b4ba4192c1888001c7164257e4bc6d21d96b4"
 
 [[package]]
-name = "unicode-bidi"
-version = "0.3.15"
+name = "typenum"
+version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08f95100a766bf4f8f28f90d77e0a5461bbdb219042e7679bebe79004fed8d75"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
 
 [[package]]
 name = "unicode-ident"
@@ -3520,6 +4141,12 @@ version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4c87d22b6e3f4a18d4d40ef354e97c90fcb14dd91d7dc0aa9d8a1172ebf7202"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "unwrap-infallible"
 version = "0.1.5"
@@ -3528,9 +4155,9 @@ checksum = "151ac09978d3c2862c4e39b557f4eceee2cc72150bc4cb4f16abf061b6e381fb"
 
 [[package]]
 name = "url"
-version = "2.5.0"
+version = "2.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "31e6302e3bb753d46e83516cae55ae196fc0c309407cf11ab35cc51a4c2a4633"
+checksum = "f7c25da092f0a868cdf09e8674cd3b7ef3a7d92a24253e663a2fb85e2496de56"
 dependencies = [
  "form_urlencoded",
  "idna",
@@ -3555,11 +4182,23 @@ dependencies = [
  "use-module",
 ]
 
+[[package]]
+name = "utf16_iter"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8232dd3cdaed5356e0f716d285e4b40b932ac434100fe9b7e0e8e935b9e6246"
+
+[[package]]
+name = "utf8_iter"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
+
 [[package]]
 name = "utf8parse"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
 [[package]]
 name = "vault"
@@ -3643,7 +4282,7 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "wasm-bindgen-macro",
 ]
 
@@ -3668,7 +4307,7 @@ version = "0.4.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "76bc14366121efc8dbb487ab05bcc9d346b3b5ec0eaa76e46594cabbe51762c0"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "js-sys",
  "wasm-bindgen",
  "web-sys",
@@ -3703,6 +4342,17 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
 
+[[package]]
+name = "wasm-demo"
+version = "0.1.0"
+dependencies = [
+ "plotters",
+ "plotters-canvas",
+ "wasm-bindgen",
+ "web-sys",
+ "wee_alloc",
+]
+
 [[package]]
 name = "wasmparser"
 version = "0.208.1"
@@ -3737,6 +4387,40 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "wee_alloc"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb3b5a6b2bb17cb6ad44a2e68a43e8d2722c997da10e928665c72ec6c0a0b8e"
+dependencies = [
+ "cfg-if 0.1.10",
+ "libc",
+ "memory_units",
+ "winapi",
+]
+
+[[package]]
+name = "weezl"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53a85b86a771b1c87058196170769dd264f66c0782acf1ae6cc51bfd64b39082"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
 [[package]]
 name = "winapi-util"
 version = "0.1.8"
@@ -3746,6 +4430,21 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-core"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+dependencies = [
+ "windows-targets 0.52.5",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.48.0"
@@ -3887,9 +4586,9 @@ checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"
 
 [[package]]
 name = "winnow"
-version = "0.6.9"
+version = "0.6.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86c949fede1d13936a99f14fafd3e76fd642b556dd2ce96287fbe2e0151bfac6"
+checksum = "59b5e5f6c299a3c7890b876a2a587f3115162487e704907d9b6cd29473052ba1"
 dependencies = [
  "memchr",
 ]
@@ -3900,10 +4599,67 @@ version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a277a57398d4bfa075df44f501a17cfdf8542d224f0d36095a2adc7aee4ef0a5"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "wio"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d129932f4644ac2396cb456385cbf9e63b5b30c6e8dc4820bdca4eb082037a5"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "write16"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1890f4022759daae28ed4fe62859b1236caebfc61ede2f63ed4e695f3f6d936"
+
+[[package]]
+name = "writeable"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51"
+
+[[package]]
+name = "yeslogic-fontconfig-sys"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffb6b23999a8b1a997bf47c7bb4d19ad4029c3327bb3386ebe0a5ff584b33c7a"
+dependencies = [
+ "cstr",
+ "dlib",
+ "once_cell",
+ "pkg-config",
+]
+
+[[package]]
+name = "yoke"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c5b1314b079b0930c31e3af543d8ee1757b1951ae1e1565ec704403a7240ca5"
+dependencies = [
+ "serde",
+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
+name = "yoke-derive"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28cc31741b18cb6f1d5ff12f5b7523e3d6eb0852bbbad19d73905511d9849b95"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "zerocopy"
 version = "0.7.34"
@@ -3924,6 +4680,27 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "zerofrom"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91ec111ce797d0e0784a1116d0ddcdbea84322cd79e5d5ad173daeba4f93ab55"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ea7b4a3637ea8669cedf0f1fd5c286a17f3de97b8dd5a70a6c167a1730e63a5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "zeroize"
 version = "1.8.1"
@@ -3944,11 +4721,33 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "zerovec"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb2cc8827d6c0994478a15c53f374f46fbd41bea663d809b14744bc42e6b109c"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97cf56601ee5052b4417d90c8755c6683473c926039908196cf35d99f893ebe7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "zip"
-version = "2.1.1"
+version = "2.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1dd56a4d5921bc2f99947ac5b3abe5f510b1be7376fdc5e9fce4a23c6a93e87c"
+checksum = "775a2b471036342aa69bc5a602bc889cb0a06cda00477d0c69566757d5553d39"
 dependencies = [
  "arbitrary",
  "crc32fast",
diff --git a/Cargo.toml b/Cargo.toml
index 345b8670a5..5f94cec44e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,6 +18,7 @@ members = [
 
   "tools/mxpy-snippet-generator",
   "tools/payload-macro-generator",
+  "tools/plotter",
 
   "vm",
 
diff --git a/tools/plotter/.gitignore b/tools/plotter/.gitignore
new file mode 100644
index 0000000000..769dfbb4ba
--- /dev/null
+++ b/tools/plotter/.gitignore
@@ -0,0 +1,3 @@
+/target
+.*.sw*
+.vscode/*
diff --git a/tools/plotter/Cargo.toml b/tools/plotter/Cargo.toml
new file mode 100644
index 0000000000..f936cadd16
--- /dev/null
+++ b/tools/plotter/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "wasm-demo"
+version = "0.1.0"
+authors = ["Hao Hou <haohou302@gmail.com>"]
+edition = "2018"
+
+[lib]
+crate-type=["cdylib"]
+
+[dependencies]
+plotters = "^0.3.2"
+wasm-bindgen = "0.2.78"
+wee_alloc = "0.4.5"
+web-sys = { version = "0.3.39", features = ["HtmlCanvasElement"] }
+plotters-canvas = "^0.3.0"
+
+[profile.release]
+lto = true
diff --git a/tools/plotter/README.md b/tools/plotter/README.md
new file mode 100644
index 0000000000..cfe2983da2
--- /dev/null
+++ b/tools/plotter/README.md
@@ -0,0 +1,54 @@
+# Example Project of Plotters + WASM
+
+This is a minimal project that uses Plotters in WASM application.
+
+- For more information about Plotters project, check our [core repository](https://github.com/plotters-rs/plotters).
+
+- This demo has been deployed at this [link](https://plotters-rs.github.io/wasm-demo/www/index.html).
+
+## Try this example locally
+
+To build the demo you need [wasm-pack](https://rustwasm.github.io/docs/book/game-of-life/setup.html).
+
+Then you can run it locally either using `npm` and `webpack-dev-server` or
+just with static web server.
+
+The following script will install needed software and run the server via `npm`.
+```
+./start-server.sh
+```
+
+For Windows users without Bash, `start-server.bat` can be used to
+launch the server.
+
+```
+start-server.bat
+```
+
+## Developing with NPM
+Please use [rust-wasm guide](https://rustwasm.github.io/docs/book/game-of-life/setup.html) for initial setup .
+Then you can run the demo locally using `npm`:
+```bash
+wasm-pack build
+cd www
+npm install
+npm start
+```
+
+This will start a dev server which will automatically reload your page
+whenever you change anything in `www` directory. To update `rust` code
+call `wasm-pack build` manually.
+
+## Developing without dependenices
+If you don't want to use `npm` here's how you can run the example
+using any web server. We are using rust [basic-http-server](https://github.com/brson/basic-http-server), but
+any web server will do.
+
+```bash
+# Install web server (instead you can use your local nginx for example)
+cargo install basic-http-server
+wasm-pack build --target web # Note `--target web`
+basic-http-server
+```
+
+Then open http://127.0.0.1:4000/www
diff --git a/tools/plotter/src/func_plot.rs b/tools/plotter/src/func_plot.rs
new file mode 100644
index 0000000000..054452f08b
--- /dev/null
+++ b/tools/plotter/src/func_plot.rs
@@ -0,0 +1,31 @@
+use crate::DrawResult;
+use plotters::prelude::*;
+use plotters_canvas::CanvasBackend;
+
+/// Draw power function f(x) = x^power.
+pub fn draw(canvas_id: &str, power: i32) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
+    let backend = CanvasBackend::new(canvas_id).expect("cannot find canvas");
+    let root = backend.into_drawing_area();
+    let font: FontDesc = ("sans-serif", 20.0).into();
+
+    root.fill(&WHITE)?;
+
+    let mut chart = ChartBuilder::on(&root)
+        .margin(20u32)
+        .caption(format!("y=x^{}", power), font)
+        .x_label_area_size(30u32)
+        .y_label_area_size(30u32)
+        .build_cartesian_2d(-1f32..1f32, -1.2f32..1.2f32)?;
+
+    chart.configure_mesh().x_labels(3).y_labels(3).draw()?;
+
+    chart.draw_series(LineSeries::new(
+        (-50..=50)
+            .map(|x| x as f32 / 50.0)
+            .map(|x| (x, x.powf(power as f32))),
+        &RED,
+    ))?;
+
+    root.present()?;
+    return Ok(chart.into_coord_trans());
+}
diff --git a/tools/plotter/src/lib.rs b/tools/plotter/src/lib.rs
new file mode 100644
index 0000000000..99b270cb73
--- /dev/null
+++ b/tools/plotter/src/lib.rs
@@ -0,0 +1,58 @@
+use wasm_bindgen::prelude::*;
+use web_sys::HtmlCanvasElement;
+
+mod func_plot;
+mod mandelbrot;
+mod plot3d;
+
+#[global_allocator]
+static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
+
+/// Type alias for the result of a drawing function.
+pub type DrawResult<T> = Result<T, Box<dyn std::error::Error>>;
+
+/// Type used on the JS side to convert screen coordinates to chart
+/// coordinates.
+#[wasm_bindgen]
+pub struct Chart {
+    convert: Box<dyn Fn((i32, i32)) -> Option<(f64, f64)>>,
+}
+
+/// Result of screen to chart coordinates conversion.
+#[wasm_bindgen]
+pub struct Point {
+    pub x: f64,
+    pub y: f64,
+}
+
+#[wasm_bindgen]
+impl Chart {
+    /// Draw provided power function on the canvas element using it's id.
+    /// Return `Chart` struct suitable for coordinate conversion.
+    pub fn power(canvas_id: &str, power: i32) -> Result<Chart, JsValue> {
+        let map_coord = func_plot::draw(canvas_id, power).map_err(|err| err.to_string())?;
+        Ok(Chart {
+            convert: Box::new(move |coord| map_coord(coord).map(|(x, y)| (x.into(), y.into()))),
+        })
+    }
+
+    /// Draw Mandelbrot set on the provided canvas element.
+    /// Return `Chart` struct suitable for coordinate conversion.
+    pub fn mandelbrot(canvas: HtmlCanvasElement) -> Result<Chart, JsValue> {
+        let map_coord = mandelbrot::draw(canvas).map_err(|err| err.to_string())?;
+        Ok(Chart {
+            convert: Box::new(map_coord),
+        })
+    }
+
+    pub fn plot3d(canvas: HtmlCanvasElement, pitch: f64, yaw: f64) -> Result<(), JsValue> {
+        plot3d::draw(canvas, pitch, yaw).map_err(|err| err.to_string())?;
+        Ok(())
+    }
+
+    /// This function can be used to convert screen coordinates to
+    /// chart coordinates.
+    pub fn coord(&self, x: i32, y: i32) -> Option<Point> {
+        (self.convert)((x, y)).map(|(x, y)| Point { x, y })
+    }
+}
diff --git a/tools/plotter/src/mandelbrot.rs b/tools/plotter/src/mandelbrot.rs
new file mode 100644
index 0000000000..6c6bc9ae8a
--- /dev/null
+++ b/tools/plotter/src/mandelbrot.rs
@@ -0,0 +1,67 @@
+use crate::DrawResult;
+use plotters::prelude::*;
+use plotters_canvas::CanvasBackend;
+use std::ops::Range;
+use web_sys::HtmlCanvasElement;
+
+/// Draw Mandelbrot set
+pub fn draw(element: HtmlCanvasElement) -> DrawResult<impl Fn((i32, i32)) -> Option<(f64, f64)>> {
+    let backend = CanvasBackend::with_canvas_object(element).unwrap();
+
+    let root = backend.into_drawing_area();
+    root.fill(&WHITE)?;
+
+    let mut chart = ChartBuilder::on(&root)
+        .margin(20)
+        .x_label_area_size(10)
+        .y_label_area_size(10)
+        .build_cartesian_2d(-2.1..0.6, -1.2..1.2)?;
+
+    chart
+        .configure_mesh()
+        .disable_x_mesh()
+        .disable_y_mesh()
+        .draw()?;
+
+    let plotting_area = chart.plotting_area();
+
+    let range = plotting_area.get_pixel_range();
+    let (pw, ph) = (range.0.end - range.0.start, range.1.end - range.1.start);
+    let (xr, yr) = (chart.x_range(), chart.y_range());
+
+    for (x, y, c) in mandelbrot_set(xr, yr, (pw as usize, ph as usize), 100) {
+        if c != 100 {
+            plotting_area.draw_pixel((x, y), &HSLColor(c as f64 / 100.0, 1.0, 0.5))?;
+        } else {
+            plotting_area.draw_pixel((x, y), &BLACK)?;
+        }
+    }
+
+    root.present()?;
+    return Ok(Box::new(chart.into_coord_trans()));
+}
+
+fn mandelbrot_set(
+    real: Range<f64>,
+    complex: Range<f64>,
+    samples: (usize, usize),
+    max_iter: usize,
+) -> impl Iterator<Item = (f64, f64, usize)> {
+    let step = (
+        (real.end - real.start) / samples.0 as f64,
+        (complex.end - complex.start) / samples.1 as f64,
+    );
+    return (0..(samples.0 * samples.1)).map(move |k| {
+        let c = (
+            real.start + step.0 * (k % samples.0) as f64,
+            complex.start + step.1 * (k / samples.0) as f64,
+        );
+        let mut z = (0.0, 0.0);
+        let mut cnt = 0;
+        while cnt < max_iter && z.0 * z.0 + z.1 * z.1 <= 1e10 {
+            z = (z.0 * z.0 - z.1 * z.1 + c.0, 2.0 * z.0 * z.1 + c.1);
+            cnt += 1;
+        }
+        return (c.0, c.1, cnt);
+    });
+}
diff --git a/tools/plotter/src/plot3d.rs b/tools/plotter/src/plot3d.rs
new file mode 100644
index 0000000000..06d0190d19
--- /dev/null
+++ b/tools/plotter/src/plot3d.rs
@@ -0,0 +1,42 @@
+use crate::DrawResult;
+use plotters::prelude::*;
+use plotters_canvas::CanvasBackend;
+use web_sys::HtmlCanvasElement;
+
+pub fn draw(canvas: HtmlCanvasElement, pitch: f64, yaw: f64) -> DrawResult<()> {
+    let area = CanvasBackend::with_canvas_object(canvas)
+        .unwrap()
+        .into_drawing_area();
+    area.fill(&WHITE)?;
+
+    let x_axis = (-3.0..3.0).step(0.1);
+    let z_axis = (-3.0..3.0).step(0.1);
+
+    let mut chart =
+        ChartBuilder::on(&area).build_cartesian_3d(x_axis.clone(), -3.0..3.0, z_axis.clone())?;
+
+    chart.with_projection(|mut pb| {
+        pb.yaw = yaw;
+        pb.pitch = pitch;
+        pb.scale = 0.7;
+        pb.into_matrix()
+    });
+
+    chart.configure_axes().draw()?;
+
+    chart.draw_series(
+        SurfaceSeries::xoz(x_axis.values(), z_axis.values(), |x:f64, z:f64| {
+            (x * x + z * z).cos()
+        })
+        .style(&BLUE.mix(0.2)),
+    )?;
+
+    chart.draw_series(LineSeries::new(
+        (-100..100)
+            .map(|y| y as f64 / 40.0)
+            .map(|y| ((y * 10.0).sin(), y, (y * 10.0).cos())),
+        &BLACK,
+    ))?;
+
+    Ok(())
+}
diff --git a/tools/plotter/start-server.bat b/tools/plotter/start-server.bat
new file mode 100644
index 0000000000..aee88705f2
--- /dev/null
+++ b/tools/plotter/start-server.bat
@@ -0,0 +1,8 @@
+if not exist "www\pkg" mkdir www\pkg
+rustup target add wasm32-unknown-unknown
+wasm-pack build --release
+if errorlevel 1 cargo install wasm-pack
+wasm-pack build --release
+cd www
+call npm install
+npm start
diff --git a/tools/plotter/start-server.sh b/tools/plotter/start-server.sh
new file mode 100755
index 0000000000..d8ba0e6562
--- /dev/null
+++ b/tools/plotter/start-server.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e
+
+CONFIG=release
+mkdir -p www/pkg
+
+rustup target add wasm32-unknown-unknown
+
+if [ -z "$(cargo install --list | grep wasm-pack)" ]
+then
+	cargo install wasm-pack
+fi
+
+if [ "${CONFIG}" = "release" ]
+then
+    wasm-pack build
+else 
+    wasm-pack build --release
+fi
+
+cd www
+npm install
+npm start
diff --git a/tools/plotter/www/.gitignore b/tools/plotter/www/.gitignore
new file mode 100644
index 0000000000..16acd49d7f
--- /dev/null
+++ b/tools/plotter/www/.gitignore
@@ -0,0 +1,3 @@
+node_modules
+dist
+package-lock.json
diff --git a/tools/plotter/www/bootstrap.js b/tools/plotter/www/bootstrap.js
new file mode 100644
index 0000000000..bea8b6b67a
--- /dev/null
+++ b/tools/plotter/www/bootstrap.js
@@ -0,0 +1,21 @@
+init();
+
+async function init() {
+    if (typeof process == "object") {
+        // We run in the npm/webpack environment.
+        const [{Chart}, {main, setup}] = await Promise.all([
+            import("wasm-demo"),
+            import("./index.js"),
+        ]);
+        setup(Chart);
+        main();
+    } else {
+        const [{Chart, default: init}, {main, setup}] = await Promise.all([
+            import("../pkg/wasm_demo.js"),
+            import("./index.js"),
+        ]);
+        await init();
+        setup(Chart);
+        main();
+    }
+}
diff --git a/tools/plotter/www/index.html b/tools/plotter/www/index.html
new file mode 100644
index 0000000000..5256468042
--- /dev/null
+++ b/tools/plotter/www/index.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+	<meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
+	<title>Plotters WebAssembly Demo</title>
+	<link rel="stylesheet" href="./style.css">
+    </head>
+    <body>
+        <noscript>This page contains webassembly and javascript content, please enable javascript in your browser.</noscript>
+        <script src="./bootstrap.js"></script>
+	<main>
+	    <h1>Plotters WebAssembly Demo</h1>
+	    <div id="coord"></div>
+        <canvas id="canvas" width="600" height="400"></canvas>
+	    <div id="status">Loading WebAssembly...</div>
+	    <div id="control">
+			<label for="plot-type">Demo: </label>
+			<select id="plot-type">
+				<option value="0">Graph of y=1</option>
+				<option value="1">Graph of y=x</option>
+				<option value="2">Graph of y=x^2</option>
+				<option value="3">Graph of y=x^3</option>
+				<option value="4">Graph of y=x^4</option>
+				<option value="5">Graph of y=x^5</option>
+				<option value="mandelbrot">Mandelbrot Set</option>
+				<option value="3d-plot">3D Plot Demo</option>
+			</select>
+			<div id="3d-control" class="hide">
+				<label for="pitch">Pitch: </label> <input type="range" min="0" max="157" id="pitch" value="10"> <br/>
+				<label for="yaw">Yaw: </label> <input type="range" min="0" max="314" id="yaw" value="50">
+			</div>
+	    </div>
+	</main>
+	<footer>
+	    <a href="https://github.com/plotters-rs/plotters-wasm-demo" target="a">Source</a> |
+	    <a href="https://github.com/plotters-rs/plotters" target="a">Repo</a> |
+	    <a href="https://crates.io/crates/plotters" target="a">Crates</a> |
+	    <a href="https://docs.rs/plotters" target="a">Docs</a>
+	</footer>
+    </body>
+</html>
diff --git a/tools/plotter/www/index.js b/tools/plotter/www/index.js
new file mode 100644
index 0000000000..6cd4bd36f5
--- /dev/null
+++ b/tools/plotter/www/index.js
@@ -0,0 +1,103 @@
+// If you only use `npm` you can simply
+// import { Chart } from "wasm-demo" and remove `setup` call from `bootstrap.js`.
+class Chart {}
+
+const canvas = document.getElementById("canvas");
+const coord = document.getElementById("coord");
+const plotType = document.getElementById("plot-type");
+const pitch = document.getElementById("pitch");
+const yaw = document.getElementById("yaw");
+const control = document.getElementById("3d-control");
+const status = document.getElementById("status");
+
+let chart = null;
+
+/** Main entry point */
+export function main() {
+	let hash = location.hash.substr(1);
+	for(var i = 0; i < plotType.options.length; i++) {
+		if(hash == plotType.options[i].value) {
+			plotType.value = hash;
+		}
+	}
+    setupUI();
+    setupCanvas();
+}
+
+/** This function is used in `bootstrap.js` to setup imports. */
+export function setup(WasmChart) {
+    Chart = WasmChart;
+}
+
+/** Add event listeners. */
+function setupUI() {
+    status.innerText = "WebAssembly loaded!";
+    plotType.addEventListener("change", updatePlot);
+	yaw.addEventListener("change", updatePlot);
+	pitch.addEventListener("change", updatePlot);
+	yaw.addEventListener("input", updatePlot);
+	pitch.addEventListener("input", updatePlot);
+    window.addEventListener("resize", setupCanvas);
+    window.addEventListener("mousemove", onMouseMove);
+}
+
+/** Setup canvas to properly handle high DPI and redraw current plot. */
+function setupCanvas() {
+	const dpr = window.devicePixelRatio || 1.0;
+    const aspectRatio = canvas.width / canvas.height;
+    const size = canvas.parentNode.offsetWidth * 0.8;
+    canvas.style.width = size + "px";
+    canvas.style.height = size / aspectRatio + "px";
+    canvas.width = size;
+    canvas.height = size / aspectRatio;
+    updatePlot();
+}
+
+/** Update displayed coordinates. */
+function onMouseMove(event) {
+    if (chart) {
+		var text = "Mouse pointer is out of range";
+
+		if(event.target == canvas) {
+			let actualRect = canvas.getBoundingClientRect();
+			let logicX = event.offsetX * canvas.width / actualRect.width;
+			let logicY = event.offsetY * canvas.height / actualRect.height;
+			const point = chart.coord(logicX, logicY);
+			text = (point) 
+				? `(${point.x.toFixed(3)}, ${point.y.toFixed(3)})`
+				: text;
+		}
+        coord.innerText = text;
+    }
+}
+
+function updatePlot3d() {
+	let yaw_value = Number(yaw.value) / 100.0;
+	let pitch_value = Number(pitch.value) / 100.0;
+	Chart.plot3d(canvas, pitch_value, yaw_value);
+	coord.innerText = `Pitch:${pitch_value}, Yaw:${yaw_value}`
+}
+
+/** Redraw currently selected plot. */
+function updatePlot() {
+    const selected = plotType.selectedOptions[0];
+    status.innerText = `Rendering ${selected.innerText}...`;
+    chart = null;
+    const start = performance.now();
+	switch(selected.value) {
+		case "mandelbrot":
+			control.classList.add("hide");
+			chart = Chart.mandelbrot(canvas);
+			break;
+		case "3d-plot": 
+			control.classList.remove("hide");
+			updatePlot3d();
+			break;
+		default:
+			control.classList.add("hide");
+			chart = Chart.power("canvas", Number(selected.value))
+	}
+	
+    const end = performance.now();
+    status.innerText = `Rendered ${selected.innerText} in ${Math.ceil(end - start)}ms`;
+}
diff --git a/tools/plotter/www/package.json b/tools/plotter/www/package.json
new file mode 100644
index 0000000000..32a99f8aff
--- /dev/null
+++ b/tools/plotter/www/package.json
@@ -0,0 +1,36 @@
+{
+  "name": "plotters-wasm-demo",
+  "version": "0.1.0",
+  "description": "Plotters WASM Demo",
+  "main": "index.js",
+  "scripts": {
+    "build": "webpack --config webpack.config.js",
+    "start": "webpack-dev-server"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/38/plotters.git"
+  },
+  "keywords": [
+    "webassembly",
+    "wasm",
+    "rust",
+    "webpack",
+    "visualization"
+  ],
+  "author": "Plotters Developers",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/38/plotters/issues"
+  },
+  "homepage": "https://github.com/38/plotters",
+  "dependencies": {
+    "wasm-demo": "file:../pkg"
+  },
+  "devDependencies": {
+    "webpack": "^4.43.0",
+    "webpack-cli": "^3.3.11",
+    "webpack-dev-server": "^3.10.3",
+    "copy-webpack-plugin": "^5.0.0"
+  }
+}
diff --git a/tools/plotter/www/style.css b/tools/plotter/www/style.css
new file mode 100644
index 0000000000..404d385be6
--- /dev/null
+++ b/tools/plotter/www/style.css
@@ -0,0 +1,55 @@
+html, body, main {
+    width: 100%;
+    margin: 0;
+    padding: 0;
+}
+
+body {
+    margin: auto;
+    max-width: 800px;
+    display: flex;
+    flex-direction: column;
+}
+
+@media (max-width: 800px) {
+    body {
+        padding: 10px;
+        box-sizing: border-box;
+    }
+}
+
+main {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+}
+
+#coord, #status {
+    color: grey;
+    font-size: 10px;
+    height: 15px
+}
+
+#control {
+    margin-top: 1em;
+}
+
+#control label {
+    font-weight: bold;
+    margin-right: 1em;
+}
+
+#control select {
+    padding: 0.25em 0.5em;
+}
+
+footer {
+    margin-top: 2em;
+    font-size: 12px;
+    text-align: center;
+}
+
+.hide {
+	visibility: hidden;
+	height: 0px;
+}
diff --git a/tools/plotter/www/webpack.config.js b/tools/plotter/www/webpack.config.js
new file mode 100644
index 0000000000..80ad8142d2
--- /dev/null
+++ b/tools/plotter/www/webpack.config.js
@@ -0,0 +1,14 @@
+const CopyWebpackPlugin = require("copy-webpack-plugin");
+const path = require('path');
+
+module.exports = {
+  entry: "./bootstrap.js",
+  output: {
+    path: path.resolve(__dirname, "dist"),
+    filename: "bootstrap.js",
+  },
+  mode: "development",
+  plugins: [
+    new CopyWebpackPlugin(['index.html'])
+  ],
+};

From 2b1a0f6fa98608f1127a54eda76a33166db4139c Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Mon, 17 Jun 2024 21:33:45 +0300
Subject: [PATCH 10/20] plotters - logarithm stub

---
 tools/plotter/src/lib.rs       |  8 ++++++++
 tools/plotter/src/logarithm.rs | 31 +++++++++++++++++++++++++++++++
 tools/plotter/www/index.html   |  1 +
 tools/plotter/www/index.js     |  7 ++++++-
 4 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 tools/plotter/src/logarithm.rs

diff --git a/tools/plotter/src/lib.rs b/tools/plotter/src/lib.rs
index 99b270cb73..37940ab944 100644
--- a/tools/plotter/src/lib.rs
+++ b/tools/plotter/src/lib.rs
@@ -4,6 +4,7 @@ use web_sys::HtmlCanvasElement;
 mod func_plot;
 mod mandelbrot;
 mod plot3d;
+mod logarithm;
 
 #[global_allocator]
 static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
@@ -36,6 +37,13 @@ impl Chart {
         })
     }
 
+    pub fn logarithm(canvas_id: &str) -> Result<Chart, JsValue> {
+        let map_coord = logarithm::draw(canvas_id).map_err(|err| err.to_string())?;
+        Ok(Chart {
+            convert: Box::new(move |coord| map_coord(coord).map(|(x, y)| (x.into(), y.into()))),
+        })
+    }
+
     /// Draw Mandelbrot set on the provided canvas element.
     /// Return `Chart` struct suitable for coordinate conversion.
     pub fn mandelbrot(canvas: HtmlCanvasElement) -> Result<Chart, JsValue> {
diff --git a/tools/plotter/src/logarithm.rs b/tools/plotter/src/logarithm.rs
new file mode 100644
index 0000000000..797e67c1a8
--- /dev/null
+++ b/tools/plotter/src/logarithm.rs
@@ -0,0 +1,31 @@
+use crate::DrawResult;
+use plotters::prelude::*;
+use plotters_canvas::CanvasBackend;
+
+/// Draw power function f(x) = x^power.
+pub fn draw(canvas_id: &str) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
+    let backend = CanvasBackend::new(canvas_id).expect("cannot find canvas");
+    let root = backend.into_drawing_area();
+    let font: FontDesc = ("sans-serif", 20.0).into();
+
+    root.fill(&WHITE)?;
+
+    let mut chart = ChartBuilder::on(&root)
+        .margin(20u32)
+        .caption(format!("y=ln(x)"), font)
+        .x_label_area_size(30u32)
+        .y_label_area_size(30u32)
+        .build_cartesian_2d(0f32..50f32, -10f32..10f32)?;
+
+    chart.configure_mesh().x_labels(3).y_labels(3).draw()?;
+
+    chart.draw_series(LineSeries::new(
+        (0..=500)
+            .map(|x| x as f32 / 10f32)
+            .map(|x| (x, x.ln())),
+        &RED,
+    ))?;
+
+    root.present()?;
+    return Ok(chart.into_coord_trans());
+}
diff --git a/tools/plotter/www/index.html b/tools/plotter/www/index.html
index 5256468042..826d3ac9ba 100644
--- a/tools/plotter/www/index.html
+++ b/tools/plotter/www/index.html
@@ -23,6 +23,7 @@ <h1>Plotters WebAssembly Demo</h1>
 				<option value="3">Graph of y=x^3</option>
 				<option value="4">Graph of y=x^4</option>
 				<option value="5">Graph of y=x^5</option>
+				<option value="logarithm">Logarithms</option>
 				<option value="mandelbrot">Mandelbrot Set</option>
 				<option value="3d-plot">3D Plot Demo</option>
 			</select>
diff --git a/tools/plotter/www/index.js b/tools/plotter/www/index.js
index 6cd4bd36f5..e84a500080 100644
--- a/tools/plotter/www/index.js
+++ b/tools/plotter/www/index.js
@@ -89,13 +89,18 @@ function updatePlot() {
 			control.classList.add("hide");
 			chart = Chart.mandelbrot(canvas);
 			break;
+		case "logarithm": 
+			control.classList.add("hide");
+			chart = Chart.logarithm("canvas");
+			break;
 		case "3d-plot": 
 			control.classList.remove("hide");
 			updatePlot3d();
 			break;
 		default:
 			control.classList.add("hide");
-			chart = Chart.power("canvas", Number(selected.value))
+			chart = Chart.power("canvas", Number(selected.value));
+			// chart = null;
 	}
 	
     const end = performance.now();

From b3204563d030c63925ea97daa3f64bb0d7798e94 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Tue, 18 Jun 2024 09:10:03 +0300
Subject: [PATCH 11/20] plotters - cleanup

---
 tools/plotter/build-wasm.sh   | 18 ++++++++++++++++++
 tools/plotter/src/lib.rs      | 10 ----------
 tools/plotter/start-server.sh | 15 +--------------
 tools/plotter/www/index.html  |  1 -
 tools/plotter/www/index.js    |  4 ----
 5 files changed, 19 insertions(+), 29 deletions(-)
 create mode 100755 tools/plotter/build-wasm.sh

diff --git a/tools/plotter/build-wasm.sh b/tools/plotter/build-wasm.sh
new file mode 100755
index 0000000000..fc7fe6fb1b
--- /dev/null
+++ b/tools/plotter/build-wasm.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+
+CONFIG=release
+
+rustup target add wasm32-unknown-unknown
+
+if [ -z "$(cargo install --list | grep wasm-pack)" ]
+then
+	cargo install wasm-pack
+fi
+
+if [ "${CONFIG}" = "release" ]
+then
+    wasm-pack build
+else 
+    wasm-pack build --release
+fi
diff --git a/tools/plotter/src/lib.rs b/tools/plotter/src/lib.rs
index 37940ab944..c703856617 100644
--- a/tools/plotter/src/lib.rs
+++ b/tools/plotter/src/lib.rs
@@ -2,7 +2,6 @@ use wasm_bindgen::prelude::*;
 use web_sys::HtmlCanvasElement;
 
 mod func_plot;
-mod mandelbrot;
 mod plot3d;
 mod logarithm;
 
@@ -44,15 +43,6 @@ impl Chart {
         })
     }
 
-    /// Draw Mandelbrot set on the provided canvas element.
-    /// Return `Chart` struct suitable for coordinate conversion.
-    pub fn mandelbrot(canvas: HtmlCanvasElement) -> Result<Chart, JsValue> {
-        let map_coord = mandelbrot::draw(canvas).map_err(|err| err.to_string())?;
-        Ok(Chart {
-            convert: Box::new(map_coord),
-        })
-    }
-
     pub fn plot3d(canvas: HtmlCanvasElement, pitch: f64, yaw: f64) -> Result<(), JsValue> {
         plot3d::draw(canvas, pitch, yaw).map_err(|err| err.to_string())?;
         Ok(())
diff --git a/tools/plotter/start-server.sh b/tools/plotter/start-server.sh
index d8ba0e6562..09641b1a03 100755
--- a/tools/plotter/start-server.sh
+++ b/tools/plotter/start-server.sh
@@ -1,22 +1,9 @@
 #!/bin/bash
 set -e
 
-CONFIG=release
 mkdir -p www/pkg
 
-rustup target add wasm32-unknown-unknown
-
-if [ -z "$(cargo install --list | grep wasm-pack)" ]
-then
-	cargo install wasm-pack
-fi
-
-if [ "${CONFIG}" = "release" ]
-then
-    wasm-pack build
-else 
-    wasm-pack build --release
-fi
+./build-wasm.sh
 
 cd www
 npm install
diff --git a/tools/plotter/www/index.html b/tools/plotter/www/index.html
index 826d3ac9ba..5a68c73ed3 100644
--- a/tools/plotter/www/index.html
+++ b/tools/plotter/www/index.html
@@ -24,7 +24,6 @@ <h1>Plotters WebAssembly Demo</h1>
 				<option value="4">Graph of y=x^4</option>
 				<option value="5">Graph of y=x^5</option>
 				<option value="logarithm">Logarithms</option>
-				<option value="mandelbrot">Mandelbrot Set</option>
 				<option value="3d-plot">3D Plot Demo</option>
 			</select>
 			<div id="3d-control" class="hide">
diff --git a/tools/plotter/www/index.js b/tools/plotter/www/index.js
index e84a500080..e6cae453c5 100644
--- a/tools/plotter/www/index.js
+++ b/tools/plotter/www/index.js
@@ -85,10 +85,6 @@ function updatePlot() {
     chart = null;
     const start = performance.now();
 	switch(selected.value) {
-		case "mandelbrot":
-			control.classList.add("hide");
-			chart = Chart.mandelbrot(canvas);
-			break;
 		case "logarithm": 
 			control.classList.add("hide");
 			chart = Chart.logarithm("canvas");

From c6d1357eef82a12928c5ea7d85527c565cd3e0d4 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Tue, 18 Jun 2024 14:10:20 +0300
Subject: [PATCH 12/20] plotters - basic logarithm

---
 tools/plotter/src/lib.rs        |  4 +-
 tools/plotter/src/logarithm.rs  | 19 ++++++----
 tools/plotter/src/mandelbrot.rs | 67 ---------------------------------
 tools/plotter/www/index.html    |  3 ++
 tools/plotter/www/index.js      | 18 +++++++--
 5 files changed, 31 insertions(+), 80 deletions(-)
 delete mode 100644 tools/plotter/src/mandelbrot.rs

diff --git a/tools/plotter/src/lib.rs b/tools/plotter/src/lib.rs
index c703856617..838fea4ab7 100644
--- a/tools/plotter/src/lib.rs
+++ b/tools/plotter/src/lib.rs
@@ -36,8 +36,8 @@ impl Chart {
         })
     }
 
-    pub fn logarithm(canvas_id: &str) -> Result<Chart, JsValue> {
-        let map_coord = logarithm::draw(canvas_id).map_err(|err| err.to_string())?;
+    pub fn logarithm(canvas: HtmlCanvasElement, max_x: f32) -> Result<Chart, JsValue> {
+        let map_coord = logarithm::draw(canvas, max_x).map_err(|err| err.to_string())?;
         Ok(Chart {
             convert: Box::new(move |coord| map_coord(coord).map(|(x, y)| (x.into(), y.into()))),
         })
diff --git a/tools/plotter/src/logarithm.rs b/tools/plotter/src/logarithm.rs
index 797e67c1a8..62dbfdad0a 100644
--- a/tools/plotter/src/logarithm.rs
+++ b/tools/plotter/src/logarithm.rs
@@ -1,27 +1,30 @@
 use crate::DrawResult;
 use plotters::prelude::*;
 use plotters_canvas::CanvasBackend;
+use web_sys::HtmlCanvasElement;
 
-/// Draw power function f(x) = x^power.
-pub fn draw(canvas_id: &str) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
-    let backend = CanvasBackend::new(canvas_id).expect("cannot find canvas");
-    let root = backend.into_drawing_area();
+pub fn draw(canvas: HtmlCanvasElement, max_x: f32) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
+    let root = CanvasBackend::with_canvas_object(canvas)
+        .unwrap()
+        .into_drawing_area();
+    
     let font: FontDesc = ("sans-serif", 20.0).into();
 
     root.fill(&WHITE)?;
 
     let mut chart = ChartBuilder::on(&root)
         .margin(20u32)
-        .caption(format!("y=ln(x)"), font)
+        .caption(format!("y=ln(x), x=1..{max_x}"), font)
         .x_label_area_size(30u32)
         .y_label_area_size(30u32)
-        .build_cartesian_2d(0f32..50f32, -10f32..10f32)?;
+        .build_cartesian_2d(0f32..max_x, -10f32..10f32)?;
 
     chart.configure_mesh().x_labels(3).y_labels(3).draw()?;
 
+    const RANGE_MAX: i32 = 1000;
     chart.draw_series(LineSeries::new(
-        (0..=500)
-            .map(|x| x as f32 / 10f32)
+        (0..=RANGE_MAX)
+            .map(|x| x as f32 * max_x / RANGE_MAX as f32)
             .map(|x| (x, x.ln())),
         &RED,
     ))?;
diff --git a/tools/plotter/src/mandelbrot.rs b/tools/plotter/src/mandelbrot.rs
deleted file mode 100644
index 6c6bc9ae8a..0000000000
--- a/tools/plotter/src/mandelbrot.rs
+++ /dev/null
@@ -1,67 +0,0 @@
-use crate::DrawResult;
-use plotters::prelude::*;
-use plotters_canvas::CanvasBackend;
-use std::ops::Range;
-use web_sys::HtmlCanvasElement;
-
-/// Draw Mandelbrot set
-pub fn draw(element: HtmlCanvasElement) -> DrawResult<impl Fn((i32, i32)) -> Option<(f64, f64)>> {
-    let backend = CanvasBackend::with_canvas_object(element).unwrap();
-
-    let root = backend.into_drawing_area();
-    root.fill(&WHITE)?;
-
-    let mut chart = ChartBuilder::on(&root)
-        .margin(20)
-        .x_label_area_size(10)
-        .y_label_area_size(10)
-        .build_cartesian_2d(-2.1..0.6, -1.2..1.2)?;
-
-    chart
-        .configure_mesh()
-        .disable_x_mesh()
-        .disable_y_mesh()
-        .draw()?;
-
-    let plotting_area = chart.plotting_area();
-
-    let range = plotting_area.get_pixel_range();
-    let (pw, ph) = (range.0.end - range.0.start, range.1.end - range.1.start);
-    let (xr, yr) = (chart.x_range(), chart.y_range());
-
-    for (x, y, c) in mandelbrot_set(xr, yr, (pw as usize, ph as usize), 100) {
-        if c != 100 {
-            plotting_area.draw_pixel((x, y), &HSLColor(c as f64 / 100.0, 1.0, 0.5))?;
-        } else {
-            plotting_area.draw_pixel((x, y), &BLACK)?;
-        }
-    }
-
-    root.present()?;
-    return Ok(Box::new(chart.into_coord_trans()));
-}
-
-fn mandelbrot_set(
-    real: Range<f64>,
-    complex: Range<f64>,
-    samples: (usize, usize),
-    max_iter: usize,
-) -> impl Iterator<Item = (f64, f64, usize)> {
-    let step = (
-        (real.end - real.start) / samples.0 as f64,
-        (complex.end - complex.start) / samples.1 as f64,
-    );
-    return (0..(samples.0 * samples.1)).map(move |k| {
-        let c = (
-            real.start + step.0 * (k % samples.0) as f64,
-            complex.start + step.1 * (k / samples.0) as f64,
-        );
-        let mut z = (0.0, 0.0);
-        let mut cnt = 0;
-        while cnt < max_iter && z.0 * z.0 + z.1 * z.1 <= 1e10 {
-            z = (z.0 * z.0 - z.1 * z.1 + c.0, 2.0 * z.0 * z.1 + c.1);
-            cnt += 1;
-        }
-        return (c.0, c.1, cnt);
-    });
-}
diff --git a/tools/plotter/www/index.html b/tools/plotter/www/index.html
index 5a68c73ed3..c463175603 100644
--- a/tools/plotter/www/index.html
+++ b/tools/plotter/www/index.html
@@ -30,6 +30,9 @@ <h1>Plotters WebAssembly Demo</h1>
 				<label for="pitch">Pitch: </label> <input type="range" min="0" max="157" id="pitch" value="10"> <br/>
 				<label for="yaw">Yaw: </label> <input type="range" min="0" max="314" id="yaw" value="50">
 			</div>
+			<div id="logControl" class="hide">
+				<label for="logMax">Max value: </label> <input id="logMax" type="range" min="1" max="100" value="10">
+			</div>
 	    </div>
 	</main>
 	<footer>
diff --git a/tools/plotter/www/index.js b/tools/plotter/www/index.js
index e6cae453c5..ac24813e59 100644
--- a/tools/plotter/www/index.js
+++ b/tools/plotter/www/index.js
@@ -7,7 +7,9 @@ const coord = document.getElementById("coord");
 const plotType = document.getElementById("plot-type");
 const pitch = document.getElementById("pitch");
 const yaw = document.getElementById("yaw");
+const logMax = document.getElementById("logMax");
 const control = document.getElementById("3d-control");
+const logControl = document.getElementById("logControl");
 const status = document.getElementById("status");
 
 let chart = null;
@@ -37,6 +39,7 @@ function setupUI() {
 	pitch.addEventListener("change", updatePlot);
 	yaw.addEventListener("input", updatePlot);
 	pitch.addEventListener("input", updatePlot);
+	logMax.addEventListener("input", updatePlot);
     window.addEventListener("resize", setupCanvas);
     window.addEventListener("mousemove", onMouseMove);
 }
@@ -78,6 +81,9 @@ function updatePlot3d() {
 	coord.innerText = `Pitch:${pitch_value}, Yaw:${yaw_value}`
 }
 
+function updateLogarithm() {
+}
+
 /** Redraw currently selected plot. */
 function updatePlot() {
     const selected = plotType.selectedOptions[0];
@@ -87,18 +93,24 @@ function updatePlot() {
 	switch(selected.value) {
 		case "logarithm": 
 			control.classList.add("hide");
-			chart = Chart.logarithm("canvas");
+			logControl.classList.remove("hide");
+			updateLogarithm();
+			let logMaxValue = Number(logMax.value);
+			status.innerText = `Updated log: ${logMaxValue}`
+			chart = Chart.logarithm(canvas, Number(logMaxValue));
+			coord.innerText = `Updated log: ${logMaxValue}`
 			break;
 		case "3d-plot": 
 			control.classList.remove("hide");
+			logControl.classList.add("hide");
 			updatePlot3d();
 			break;
 		default:
 			control.classList.add("hide");
+			logControl.classList.add("hide");
 			chart = Chart.power("canvas", Number(selected.value));
-			// chart = null;
 	}
 	
     const end = performance.now();
-    status.innerText = `Rendered ${selected.innerText} in ${Math.ceil(end - start)}ms`;
+    // status.innerText = `Rendered ${selected.innerText} in ${Math.ceil(end - start)}ms`;
 }

From b1750672429547bdc4902f8e6827401963e9251a Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Tue, 18 Jun 2024 15:33:01 +0300
Subject: [PATCH 13/20] ploters - 2nd line (log2)

---
 tools/plotter/src/logarithm.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/plotter/src/logarithm.rs b/tools/plotter/src/logarithm.rs
index 62dbfdad0a..6e2453c2e0 100644
--- a/tools/plotter/src/logarithm.rs
+++ b/tools/plotter/src/logarithm.rs
@@ -29,6 +29,13 @@ pub fn draw(canvas: HtmlCanvasElement, max_x: f32) -> DrawResult<impl Fn((i32, i
         &RED,
     ))?;
 
+    chart.draw_series(LineSeries::new(
+        (0..=RANGE_MAX)
+            .map(|x| x as f32 * max_x / RANGE_MAX as f32)
+            .map(|x| (x, x.log2())),
+        &GREEN,
+    ))?;
+
     root.present()?;
     return Ok(chart.into_coord_trans());
 }

From ec6d9b2154ac6eacdd7c3d89616ff8110ce05873 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Tue, 18 Jun 2024 19:03:35 +0300
Subject: [PATCH 14/20] multiversx-sc-scenario deps cleanup

---
 framework/scenario/Cargo.toml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/framework/scenario/Cargo.toml b/framework/scenario/Cargo.toml
index f8e7760dd7..66ded9803e 100644
--- a/framework/scenario/Cargo.toml
+++ b/framework/scenario/Cargo.toml
@@ -29,8 +29,6 @@ serde_json = "1.0"
 pathdiff = "0.2.1"
 itertools = "0.12.0"
 colored = "2.0"
-clap = { version = "4.4.7", features = ["derive"] }
-tokio = { version = "1.24", features = ["full"] }
 unwrap-infallible = "0.1.5"
 
 [features]

From bf406bfeac109e911b1d04677608ecf1501cd964 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Tue, 18 Jun 2024 19:36:37 +0300
Subject: [PATCH 15/20] Rust VM compilable to wasm

---
 framework/scenario/Cargo.toml                |  2 ++
 tools/plotter/Cargo.toml                     |  9 +++++++++
 vm/Cargo.toml                                | 10 +++++++---
 vm/src/crypto_functions.rs                   |  9 ++++++++-
 vm/src/tx_mock.rs                            | 12 ++++++++++--
 vm/src/tx_mock/blockchain_rng.rs             |  2 +-
 vm/src/tx_mock/blockchain_rng_unsupported.rs | 14 ++++++++++++++
 7 files changed, 51 insertions(+), 7 deletions(-)
 create mode 100644 vm/src/tx_mock/blockchain_rng_unsupported.rs

diff --git a/framework/scenario/Cargo.toml b/framework/scenario/Cargo.toml
index 66ded9803e..00d7d6c2ad 100644
--- a/framework/scenario/Cargo.toml
+++ b/framework/scenario/Cargo.toml
@@ -32,6 +32,8 @@ colored = "2.0"
 unwrap-infallible = "0.1.5"
 
 [features]
+default = ["wasm-incopatible"]
+wasm-incopatible = ["multiversx-chain-vm/wasm-incopatible"]
 run-go-tests = []
 
 [dependencies.multiversx-sc]
diff --git a/tools/plotter/Cargo.toml b/tools/plotter/Cargo.toml
index f936cadd16..bd428ce3e2 100644
--- a/tools/plotter/Cargo.toml
+++ b/tools/plotter/Cargo.toml
@@ -16,3 +16,12 @@ plotters-canvas = "^0.3.0"
 
 [profile.release]
 lto = true
+
+[dependencies.multiversx-sc]
+version = "=0.50.3"
+path = "../../framework/base"
+
+[dependencies.multiversx-sc-scenario]
+version = "=0.50.3"
+path = "../../framework/scenario"
+default-features = false
diff --git a/vm/Cargo.toml b/vm/Cargo.toml
index 907308f94f..0158bd09fa 100644
--- a/vm/Cargo.toml
+++ b/vm/Cargo.toml
@@ -16,19 +16,23 @@ description = "MultiversX VM implementation and tooling"
 keywords = ["multiversx", "blockchain", "vm", "tools"]
 categories = ["cryptography::cryptocurrencies", "development-tools::debugging"]
 
+[features]
+# not supported when compiling to wasm
+wasm-incopatible = ["rand", "rand_seeder", "ed25519-dalek"]
+
 [dependencies]
 num-bigint = "0.4"
 num-traits = "0.2"
 hex = "0.4"
 sha2 = "0.10.6"
 sha3 = "0.10.6"
-rand = "0.8.5"
-rand_seeder = "0.2.2"
-ed25519-dalek = "1.0.1"
 itertools = "0.12.0"
 hex-literal = "=0.4.1"
 bitflags = "=2.5.0"
 colored = "2.1.0"
+rand = { version= "0.8.5", optional = true }
+rand_seeder = { version= "0.2.2", optional = true }
+ed25519-dalek = { version = "1.0.1" , optional = true }
 
 [dependencies.multiversx-chain-vm-executor]
 version = "0.2.0"
diff --git a/vm/src/crypto_functions.rs b/vm/src/crypto_functions.rs
index 647f657e10..9d61e9ccc9 100644
--- a/vm/src/crypto_functions.rs
+++ b/vm/src/crypto_functions.rs
@@ -1,4 +1,3 @@
-use ed25519_dalek::*;
 use sha2::Sha256;
 use sha3::{Digest, Keccak256};
 
@@ -17,7 +16,10 @@ pub fn keccak256(data: &[u8]) -> [u8; KECCAK256_RESULT_LEN] {
     hasher.finalize().into()
 }
 
+#[cfg(feature = "wasm-incopatible")]
 pub fn verify_ed25519(key: &[u8], message: &[u8], signature: &[u8]) -> bool {
+    use ed25519_dalek::*;
+
     let public = PublicKey::from_bytes(key);
     if public.is_err() {
         return false;
@@ -30,3 +32,8 @@ pub fn verify_ed25519(key: &[u8], message: &[u8], signature: &[u8]) -> bool {
 
     public.unwrap().verify(message, &sig.unwrap()).is_ok()
 }
+
+#[cfg(not(feature = "wasm-incopatible"))]
+pub fn verify_ed25519(_key: &[u8], _message: &[u8], _signature: &[u8]) -> bool {
+    panic!("verify_ed25519 not supported for wasm builds, feature `wasm-incopatible` needs to be enabled")
+}
diff --git a/vm/src/tx_mock.rs b/vm/src/tx_mock.rs
index d1da905113..bd508d569e 100644
--- a/vm/src/tx_mock.rs
+++ b/vm/src/tx_mock.rs
@@ -1,6 +1,5 @@
 #![allow(clippy::type_complexity)]
 
-mod blockchain_rng;
 mod blockchain_update;
 mod tx_async_call_data;
 mod tx_async_promise;
@@ -20,7 +19,6 @@ mod tx_panic;
 mod tx_result;
 mod tx_result_calls;
 
-pub use blockchain_rng::*;
 pub use blockchain_update::BlockchainUpdate;
 pub use tx_async_call_data::*;
 pub use tx_async_promise::*;
@@ -38,3 +36,13 @@ pub use tx_managed_types::*;
 pub use tx_panic::*;
 pub use tx_result::*;
 pub use tx_result_calls::*;
+
+#[cfg(feature = "wasm-incopatible")]
+mod blockchain_rng;
+#[cfg(feature = "wasm-incopatible")]
+pub use blockchain_rng::BlockchainRng;
+
+#[cfg(not(feature = "wasm-incopatible"))]
+mod blockchain_rng_unsupported;
+#[cfg(not(feature = "wasm-incopatible"))]
+pub use blockchain_rng_unsupported::BlockchainRng;
diff --git a/vm/src/tx_mock/blockchain_rng.rs b/vm/src/tx_mock/blockchain_rng.rs
index bbcfafee8d..b16e9e2062 100644
--- a/vm/src/tx_mock/blockchain_rng.rs
+++ b/vm/src/tx_mock/blockchain_rng.rs
@@ -31,7 +31,7 @@ impl BlockchainRng {
         }
     }
 
-    pub fn fill<T: Fill + ?Sized>(&mut self, dest: &mut T) {
+    fn fill<T: Fill + ?Sized>(&mut self, dest: &mut T) {
         self.rng.fill(dest);
     }
 
diff --git a/vm/src/tx_mock/blockchain_rng_unsupported.rs b/vm/src/tx_mock/blockchain_rng_unsupported.rs
new file mode 100644
index 0000000000..cc97bace3c
--- /dev/null
+++ b/vm/src/tx_mock/blockchain_rng_unsupported.rs
@@ -0,0 +1,14 @@
+use super::{TxCache, TxInput};
+
+#[derive(Debug)]
+pub struct BlockchainRng;
+
+impl BlockchainRng {
+    pub fn new(_tx_input: &TxInput, _tx_cache: &TxCache) -> Self {
+        panic!("BlockchainRng not supported for wasm builds, feature `wasm-incopatible` needs to be enabled")
+    }
+
+    pub fn next_bytes(&mut self, _length: usize) -> Vec<u8> {
+        panic!("BlockchainRng not supported for wasm builds, feature `wasm-incopatible` needs to be enabled")
+    }
+}

From 3598efbc3fd2fd3f7e9518263cc64aa661affde0 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Tue, 18 Jun 2024 20:38:39 +0300
Subject: [PATCH 16/20] plotters - ln from framework

---
 Cargo.lock                                    | 26 +++++++--------
 .../base/src/types/managed/basic/big_uint.rs  | 13 ++++++--
 .../types/managed/wrapped/managed_decimal.rs  |  4 +++
 tools/plotter/Cargo.toml                      |  3 +-
 tools/plotter/src/lib.rs                      |  4 ++-
 tools/plotter/src/logarithm.rs                | 33 ++++++++++++++++---
 tools/plotter/src/plot3d.rs                   |  2 +-
 tools/plotter/www/index.js                    |  8 +----
 vm/src/tx_mock/blockchain_rng_unsupported.rs  |  2 +-
 9 files changed, 64 insertions(+), 31 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index b5db0b7851..c0df51b5a8 100755
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2457,7 +2457,6 @@ version = "0.50.3"
 dependencies = [
  "base64",
  "bech32",
- "clap",
  "colored",
  "hex",
  "itertools",
@@ -2473,7 +2472,6 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2 0.10.8",
- "tokio",
  "unwrap-infallible",
 ]
 
@@ -3488,6 +3486,19 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "sc-plotter-wasm"
+version = "0.1.0"
+dependencies = [
+ "multiversx-sc",
+ "multiversx-sc-scenario",
+ "plotters",
+ "plotters-canvas",
+ "wasm-bindgen",
+ "web-sys",
+ "wee_alloc",
+]
+
 [[package]]
 name = "scenario-tester"
 version = "0.0.0"
@@ -4341,17 +4352,6 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
 
-[[package]]
-name = "wasm-demo"
-version = "0.1.0"
-dependencies = [
- "plotters",
- "plotters-canvas",
- "wasm-bindgen",
- "web-sys",
- "wee_alloc",
-]
-
 [[package]]
 name = "wasmparser"
 version = "0.208.1"
diff --git a/framework/base/src/types/managed/basic/big_uint.rs b/framework/base/src/types/managed/basic/big_uint.rs
index 110a6b46d1..2ad3fd6701 100644
--- a/framework/base/src/types/managed/basic/big_uint.rs
+++ b/framework/base/src/types/managed/basic/big_uint.rs
@@ -240,10 +240,17 @@ impl<M: ManagedTypeApi> BigUint<M> {
         api.bi_log2(self.handle.clone())
     }
 
-    pub fn ln(&self) -> ManagedDecimal<M, ConstDecimals<9>> {
+    /// Natural logarithm of a number.
+    ///
+    /// Returns `None` for 0.
+    pub fn ln(&self) -> Option<ManagedDecimal<M, ConstDecimals<9>>> {
+        if self == &0u32 {
+            return None;
+        }
+
         let bit_log2 = self.log2(); // aproximate, based on position of the most significant bit
         let scaling_factor_9 = ConstDecimals::<9>.scaling_factor();
-        let divisor = BigUint::from(1u64 << bit_log2);
+        let divisor = BigUint::from(1u64) << bit_log2 as usize;
         let normalized = self * &*scaling_factor_9 / divisor;
 
         let x = normalized
@@ -279,7 +286,7 @@ impl<M: ManagedTypeApi> BigUint<M> {
         let mut result_bi = normalized; // reuse handle
         result_bi.overwrite_u64(result as u64);
 
-        ManagedDecimal::const_decimals_from_raw(result_bi)
+        Some(ManagedDecimal::const_decimals_from_raw(result_bi))
     }
 }
 
diff --git a/framework/base/src/types/managed/wrapped/managed_decimal.rs b/framework/base/src/types/managed/wrapped/managed_decimal.rs
index 2ca276ca9c..1775a9e75c 100644
--- a/framework/base/src/types/managed/wrapped/managed_decimal.rs
+++ b/framework/base/src/types/managed/wrapped/managed_decimal.rs
@@ -96,6 +96,10 @@ impl<M: ManagedTypeApi, D: Decimals> ManagedDecimal<M, D> {
         self.decimals.num_decimals()
     }
 
+    pub fn scaling_factor(&self) -> ManagedRef<'static, M, BigUint<M>> {
+        self.decimals.scaling_factor()
+    }
+
     pub fn rescale<T: Decimals>(self, scale_to: T) -> ManagedDecimal<M, T>
     where
         M: ManagedTypeApi,
diff --git a/tools/plotter/Cargo.toml b/tools/plotter/Cargo.toml
index bd428ce3e2..9f116ae4a5 100644
--- a/tools/plotter/Cargo.toml
+++ b/tools/plotter/Cargo.toml
@@ -1,8 +1,9 @@
 [package]
-name = "wasm-demo"
+name = "sc-plotter-wasm"
 version = "0.1.0"
 authors = ["Hao Hou <haohou302@gmail.com>"]
 edition = "2018"
+publish = false
 
 [lib]
 crate-type=["cdylib"]
diff --git a/tools/plotter/src/lib.rs b/tools/plotter/src/lib.rs
index 838fea4ab7..0ab413c9db 100644
--- a/tools/plotter/src/lib.rs
+++ b/tools/plotter/src/lib.rs
@@ -1,9 +1,11 @@
+#![allow(clippy::type_complexity)]
+
 use wasm_bindgen::prelude::*;
 use web_sys::HtmlCanvasElement;
 
 mod func_plot;
+pub mod logarithm;
 mod plot3d;
-mod logarithm;
 
 #[global_allocator]
 static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
diff --git a/tools/plotter/src/logarithm.rs b/tools/plotter/src/logarithm.rs
index 6e2453c2e0..f8cf4ab4cd 100644
--- a/tools/plotter/src/logarithm.rs
+++ b/tools/plotter/src/logarithm.rs
@@ -1,13 +1,18 @@
 use crate::DrawResult;
+use multiversx_sc::types::BigUint;
+use multiversx_sc_scenario::api::StaticApi;
 use plotters::prelude::*;
 use plotters_canvas::CanvasBackend;
 use web_sys::HtmlCanvasElement;
 
-pub fn draw(canvas: HtmlCanvasElement, max_x: f32) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
+pub fn draw(
+    canvas: HtmlCanvasElement,
+    max_x: f32,
+) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
     let root = CanvasBackend::with_canvas_object(canvas)
         .unwrap()
         .into_drawing_area();
-    
+
     let font: FontDesc = ("sans-serif", 20.0).into();
 
     root.fill(&WHITE)?;
@@ -17,7 +22,7 @@ pub fn draw(canvas: HtmlCanvasElement, max_x: f32) -> DrawResult<impl Fn((i32, i
         .caption(format!("y=ln(x), x=1..{max_x}"), font)
         .x_label_area_size(30u32)
         .y_label_area_size(30u32)
-        .build_cartesian_2d(0f32..max_x, -10f32..10f32)?;
+        .build_cartesian_2d(0f32..max_x, -1f32..5f32)?;
 
     chart.configure_mesh().x_labels(3).y_labels(3).draw()?;
 
@@ -32,10 +37,30 @@ pub fn draw(canvas: HtmlCanvasElement, max_x: f32) -> DrawResult<impl Fn((i32, i
     chart.draw_series(LineSeries::new(
         (0..=RANGE_MAX)
             .map(|x| x as f32 * max_x / RANGE_MAX as f32)
-            .map(|x| (x, x.log2())),
+            .map(|x| (x, sc_ln(x))),
         &GREEN,
     ))?;
 
     root.present()?;
     return Ok(chart.into_coord_trans());
 }
+
+pub fn sc_ln(x: f32) -> f32 {
+    let bu = BigUint::<StaticApi>::from(x as u32);
+    if let Some(ln_dec) = bu.ln() {
+        let ln_units = ln_dec.into_raw_units().to_u64().unwrap();
+        let ln_sf = ln_dec.scaling_factor().to_u64().unwrap();
+        (ln_units as f64 / ln_sf as f64) as f32
+    } else {
+        0.0
+    }
+}
+
+#[cfg(test)]
+mod test {
+    #[test]
+    fn sc_ln_test() {
+        let y = super::sc_ln(0.0);
+        println!("{y}");
+    }
+}
diff --git a/tools/plotter/src/plot3d.rs b/tools/plotter/src/plot3d.rs
index 06d0190d19..15cfa1b907 100644
--- a/tools/plotter/src/plot3d.rs
+++ b/tools/plotter/src/plot3d.rs
@@ -25,7 +25,7 @@ pub fn draw(canvas: HtmlCanvasElement, pitch: f64, yaw: f64) -> DrawResult<()> {
     chart.configure_axes().draw()?;
 
     chart.draw_series(
-        SurfaceSeries::xoz(x_axis.values(), z_axis.values(), |x:f64, z:f64| {
+        SurfaceSeries::xoz(x_axis.values(), z_axis.values(), |x: f64, z: f64| {
             (x * x + z * z).cos()
         })
         .style(&BLUE.mix(0.2)),
diff --git a/tools/plotter/www/index.js b/tools/plotter/www/index.js
index ac24813e59..5a50bbccd6 100644
--- a/tools/plotter/www/index.js
+++ b/tools/plotter/www/index.js
@@ -81,9 +81,6 @@ function updatePlot3d() {
 	coord.innerText = `Pitch:${pitch_value}, Yaw:${yaw_value}`
 }
 
-function updateLogarithm() {
-}
-
 /** Redraw currently selected plot. */
 function updatePlot() {
     const selected = plotType.selectedOptions[0];
@@ -94,11 +91,8 @@ function updatePlot() {
 		case "logarithm": 
 			control.classList.add("hide");
 			logControl.classList.remove("hide");
-			updateLogarithm();
 			let logMaxValue = Number(logMax.value);
-			status.innerText = `Updated log: ${logMaxValue}`
 			chart = Chart.logarithm(canvas, Number(logMaxValue));
-			coord.innerText = `Updated log: ${logMaxValue}`
 			break;
 		case "3d-plot": 
 			control.classList.remove("hide");
@@ -112,5 +106,5 @@ function updatePlot() {
 	}
 	
     const end = performance.now();
-    // status.innerText = `Rendered ${selected.innerText} in ${Math.ceil(end - start)}ms`;
+    status.innerText = `Rendered ${selected.innerText} in ${Math.ceil(end - start)}ms`;
 }
diff --git a/vm/src/tx_mock/blockchain_rng_unsupported.rs b/vm/src/tx_mock/blockchain_rng_unsupported.rs
index cc97bace3c..698be4ac11 100644
--- a/vm/src/tx_mock/blockchain_rng_unsupported.rs
+++ b/vm/src/tx_mock/blockchain_rng_unsupported.rs
@@ -5,7 +5,7 @@ pub struct BlockchainRng;
 
 impl BlockchainRng {
     pub fn new(_tx_input: &TxInput, _tx_cache: &TxCache) -> Self {
-        panic!("BlockchainRng not supported for wasm builds, feature `wasm-incopatible` needs to be enabled")
+        BlockchainRng
     }
 
     pub fn next_bytes(&mut self, _length: usize) -> Vec<u8> {

From 692e18e27e7cb3ff072736a6c4fa3d3006cfb685 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Tue, 18 Jun 2024 20:50:04 +0300
Subject: [PATCH 17/20] test fix

---
 framework/scenario/tests/big_uint_test.rs | 2 +-
 tools/plotter/src/logarithm.rs            | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/framework/scenario/tests/big_uint_test.rs b/framework/scenario/tests/big_uint_test.rs
index 6c33032a36..fae86ecd6d 100644
--- a/framework/scenario/tests/big_uint_test.rs
+++ b/framework/scenario/tests/big_uint_test.rs
@@ -4,7 +4,7 @@ use multiversx_sc_scenario::api::StaticApi;
 fn assert_big_uint_ln(x: u32, ln_str: &str) {
     let x = BigUint::<StaticApi>::from(x);
     let ln_x = x.ln();
-    assert_eq!(ln_x.to_string(), ln_str);
+    assert_eq!(ln_x.unwrap().to_string(), ln_str);
 }
 
 #[test]
diff --git a/tools/plotter/src/logarithm.rs b/tools/plotter/src/logarithm.rs
index f8cf4ab4cd..3ab69c1e06 100644
--- a/tools/plotter/src/logarithm.rs
+++ b/tools/plotter/src/logarithm.rs
@@ -60,7 +60,9 @@ pub fn sc_ln(x: f32) -> f32 {
 mod test {
     #[test]
     fn sc_ln_test() {
-        let y = super::sc_ln(0.0);
-        println!("{y}");
+        assert_eq!(super::sc_ln(0.0), 0.0);
+        assert!(super::sc_ln(1.0) > 0.0);
+        assert!(super::sc_ln(1.0) < 0.01);
+        assert!(super::sc_ln(2.0) > 0.6);
     }
 }

From 3875b572194c4b3fe324601c9f3c8e42755c1753 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Tue, 18 Jun 2024 23:47:49 +0300
Subject: [PATCH 18/20] plotters - logarithm error

---
 tools/plotter/src/lib.rs       |  9 ++++-
 tools/plotter/src/logarithm.rs | 35 ++++++++++++++++-
 tools/plotter/www/index.html   |  9 +++--
 tools/plotter/www/index.js     | 72 ++++++++++++++++++----------------
 4 files changed, 85 insertions(+), 40 deletions(-)

diff --git a/tools/plotter/src/lib.rs b/tools/plotter/src/lib.rs
index 0ab413c9db..3952eb1d91 100644
--- a/tools/plotter/src/lib.rs
+++ b/tools/plotter/src/lib.rs
@@ -39,7 +39,14 @@ impl Chart {
     }
 
     pub fn logarithm(canvas: HtmlCanvasElement, max_x: f32) -> Result<Chart, JsValue> {
-        let map_coord = logarithm::draw(canvas, max_x).map_err(|err| err.to_string())?;
+        let map_coord = logarithm::draw_logs(canvas, max_x).map_err(|err| err.to_string())?;
+        Ok(Chart {
+            convert: Box::new(move |coord| map_coord(coord).map(|(x, y)| (x.into(), y.into()))),
+        })
+    }
+
+    pub fn logarithm_error(canvas: HtmlCanvasElement, max_x: f32) -> Result<Chart, JsValue> {
+        let map_coord = logarithm::draw_error(canvas, max_x).map_err(|err| err.to_string())?;
         Ok(Chart {
             convert: Box::new(move |coord| map_coord(coord).map(|(x, y)| (x.into(), y.into()))),
         })
diff --git a/tools/plotter/src/logarithm.rs b/tools/plotter/src/logarithm.rs
index 3ab69c1e06..c157984c0c 100644
--- a/tools/plotter/src/logarithm.rs
+++ b/tools/plotter/src/logarithm.rs
@@ -5,7 +5,7 @@ use plotters::prelude::*;
 use plotters_canvas::CanvasBackend;
 use web_sys::HtmlCanvasElement;
 
-pub fn draw(
+pub fn draw_logs(
     canvas: HtmlCanvasElement,
     max_x: f32,
 ) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
@@ -45,6 +45,39 @@ pub fn draw(
     return Ok(chart.into_coord_trans());
 }
 
+pub fn draw_error(
+    canvas: HtmlCanvasElement,
+    max_x: f32,
+) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
+    let root = CanvasBackend::with_canvas_object(canvas)
+        .unwrap()
+        .into_drawing_area();
+
+    let font: FontDesc = ("sans-serif", 20.0).into();
+
+    root.fill(&WHITE)?;
+
+    let mut chart = ChartBuilder::on(&root)
+        .margin(20u32)
+        .caption(format!("y=logarithm error, x=1..{max_x}"), font)
+        .x_label_area_size(30u32)
+        .y_label_area_size(30u32)
+        .build_cartesian_2d(0f32..max_x, -0.5f32..0.5f32)?;
+
+    chart.configure_mesh().x_labels(3).y_labels(3).draw()?;
+
+    const RANGE_MAX: i32 = 1000;
+    chart.draw_series(LineSeries::new(
+        (0..=RANGE_MAX)
+            .map(|x| x as f32 * max_x / RANGE_MAX as f32)
+            .map(|x| (x, sc_ln(x) - x.ln())),
+        &RED,
+    ))?;
+
+    root.present()?;
+    return Ok(chart.into_coord_trans());
+}
+
 pub fn sc_ln(x: f32) -> f32 {
     let bu = BigUint::<StaticApi>::from(x as u32);
     if let Some(ln_dec) = bu.ln() {
diff --git a/tools/plotter/www/index.html b/tools/plotter/www/index.html
index c463175603..f188cc14b7 100644
--- a/tools/plotter/www/index.html
+++ b/tools/plotter/www/index.html
@@ -3,14 +3,14 @@
     <head>
 	<meta charset="utf-8">
         <meta name="viewport" content="width=device-width, initial-scale=1">
-	<title>Plotters WebAssembly Demo</title>
+	<title>MultiversX SC function plots</title>
 	<link rel="stylesheet" href="./style.css">
     </head>
     <body>
         <noscript>This page contains webassembly and javascript content, please enable javascript in your browser.</noscript>
         <script src="./bootstrap.js"></script>
 	<main>
-	    <h1>Plotters WebAssembly Demo</h1>
+	    <h1>MultiversX SC function plots</h1>
 	    <div id="coord"></div>
         <canvas id="canvas" width="600" height="400"></canvas>
 	    <div id="status">Loading WebAssembly...</div>
@@ -23,7 +23,8 @@ <h1>Plotters WebAssembly Demo</h1>
 				<option value="3">Graph of y=x^3</option>
 				<option value="4">Graph of y=x^4</option>
 				<option value="5">Graph of y=x^5</option>
-				<option value="logarithm">Logarithms</option>
+				<option value="logarithm">Logarithms (BigUint)</option>
+				<option value="logarithm-error">Logarithm (BigUint) Error</option>
 				<option value="3d-plot">3D Plot Demo</option>
 			</select>
 			<div id="3d-control" class="hide">
@@ -35,7 +36,7 @@ <h1>Plotters WebAssembly Demo</h1>
 			</div>
 	    </div>
 	</main>
-	<footer>
+	<footer class="hide">
 	    <a href="https://github.com/plotters-rs/plotters-wasm-demo" target="a">Source</a> |
 	    <a href="https://github.com/plotters-rs/plotters" target="a">Repo</a> |
 	    <a href="https://crates.io/crates/plotters" target="a">Crates</a> |
diff --git a/tools/plotter/www/index.js b/tools/plotter/www/index.js
index 5a50bbccd6..71c0e627c3 100644
--- a/tools/plotter/www/index.js
+++ b/tools/plotter/www/index.js
@@ -1,6 +1,6 @@
 // If you only use `npm` you can simply
 // import { Chart } from "wasm-demo" and remove `setup` call from `bootstrap.js`.
-class Chart {}
+class Chart { }
 
 const canvas = document.getElementById("canvas");
 const coord = document.getElementById("coord");
@@ -17,61 +17,61 @@ let chart = null;
 /** Main entry point */
 export function main() {
 	let hash = location.hash.substr(1);
-	for(var i = 0; i < plotType.options.length; i++) {
-		if(hash == plotType.options[i].value) {
+	for (var i = 0; i < plotType.options.length; i++) {
+		if (hash == plotType.options[i].value) {
 			plotType.value = hash;
 		}
 	}
-    setupUI();
-    setupCanvas();
+	setupUI();
+	setupCanvas();
 }
 
 /** This function is used in `bootstrap.js` to setup imports. */
 export function setup(WasmChart) {
-    Chart = WasmChart;
+	Chart = WasmChart;
 }
 
 /** Add event listeners. */
 function setupUI() {
-    status.innerText = "WebAssembly loaded!";
-    plotType.addEventListener("change", updatePlot);
+	status.innerText = "WebAssembly loaded!";
+	plotType.addEventListener("change", updatePlot);
 	yaw.addEventListener("change", updatePlot);
 	pitch.addEventListener("change", updatePlot);
 	yaw.addEventListener("input", updatePlot);
 	pitch.addEventListener("input", updatePlot);
 	logMax.addEventListener("input", updatePlot);
-    window.addEventListener("resize", setupCanvas);
-    window.addEventListener("mousemove", onMouseMove);
+	window.addEventListener("resize", setupCanvas);
+	window.addEventListener("mousemove", onMouseMove);
 }
 
 /** Setup canvas to properly handle high DPI and redraw current plot. */
 function setupCanvas() {
 	const dpr = window.devicePixelRatio || 1.0;
-    const aspectRatio = canvas.width / canvas.height;
-    const size = canvas.parentNode.offsetWidth * 0.8;
-    canvas.style.width = size + "px";
-    canvas.style.height = size / aspectRatio + "px";
-    canvas.width = size;
-    canvas.height = size / aspectRatio;
-    updatePlot();
+	const aspectRatio = canvas.width / canvas.height;
+	const size = canvas.parentNode.offsetWidth * 0.8;
+	canvas.style.width = size + "px";
+	canvas.style.height = size / aspectRatio + "px";
+	canvas.width = size;
+	canvas.height = size / aspectRatio;
+	updatePlot();
 }
 
 /** Update displayed coordinates. */
 function onMouseMove(event) {
-    if (chart) {
+	if (chart) {
 		var text = "Mouse pointer is out of range";
 
-		if(event.target == canvas) {
+		if (event.target == canvas) {
 			let actualRect = canvas.getBoundingClientRect();
 			let logicX = event.offsetX * canvas.width / actualRect.width;
 			let logicY = event.offsetY * canvas.height / actualRect.height;
 			const point = chart.coord(logicX, logicY);
-			text = (point) 
+			text = (point)
 				? `(${point.x.toFixed(3)}, ${point.y.toFixed(3)})`
 				: text;
 		}
-        coord.innerText = text;
-    }
+		coord.innerText = text;
+	}
 }
 
 function updatePlot3d() {
@@ -83,18 +83,22 @@ function updatePlot3d() {
 
 /** Redraw currently selected plot. */
 function updatePlot() {
-    const selected = plotType.selectedOptions[0];
-    status.innerText = `Rendering ${selected.innerText}...`;
-    chart = null;
-    const start = performance.now();
-	switch(selected.value) {
-		case "logarithm": 
+	const selected = plotType.selectedOptions[0];
+	status.innerText = `Rendering ${selected.innerText}...`;
+	chart = null;
+	const start = performance.now();
+	switch (selected.value) {
+		case "logarithm":
 			control.classList.add("hide");
 			logControl.classList.remove("hide");
-			let logMaxValue = Number(logMax.value);
-			chart = Chart.logarithm(canvas, Number(logMaxValue));
+			chart = Chart.logarithm(canvas, Number(logMax.value));
 			break;
-		case "3d-plot": 
+		case "logarithm-error":
+			control.classList.add("hide");
+			logControl.classList.remove("hide");
+			chart = Chart.logarithm_error(canvas, Number(logMax.value));
+			break;
+		case "3d-plot":
 			control.classList.remove("hide");
 			logControl.classList.add("hide");
 			updatePlot3d();
@@ -104,7 +108,7 @@ function updatePlot() {
 			logControl.classList.add("hide");
 			chart = Chart.power("canvas", Number(selected.value));
 	}
-	
-    const end = performance.now();
-    status.innerText = `Rendered ${selected.innerText} in ${Math.ceil(end - start)}ms`;
+
+	const end = performance.now();
+	status.innerText = `Rendered ${selected.innerText} in ${Math.ceil(end - start)}ms`;
 }

From e3441fb0cd9e182d83ce4b5a5ddcd4b5f659851a Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Wed, 19 Jun 2024 00:08:08 +0300
Subject: [PATCH 19/20] plotters - cleanup

---
 tools/plotter/src/func_plot.rs | 31 -------------------------
 tools/plotter/src/lib.rs       | 16 +------------
 tools/plotter/src/logarithm.rs | 14 ++++++------
 tools/plotter/src/plot3d.rs    | 42 ----------------------------------
 tools/plotter/www/index.html   | 11 ---------
 tools/plotter/www/index.js     | 23 -------------------
 6 files changed, 8 insertions(+), 129 deletions(-)
 delete mode 100644 tools/plotter/src/func_plot.rs
 delete mode 100644 tools/plotter/src/plot3d.rs

diff --git a/tools/plotter/src/func_plot.rs b/tools/plotter/src/func_plot.rs
deleted file mode 100644
index 054452f08b..0000000000
--- a/tools/plotter/src/func_plot.rs
+++ /dev/null
@@ -1,31 +0,0 @@
-use crate::DrawResult;
-use plotters::prelude::*;
-use plotters_canvas::CanvasBackend;
-
-/// Draw power function f(x) = x^power.
-pub fn draw(canvas_id: &str, power: i32) -> DrawResult<impl Fn((i32, i32)) -> Option<(f32, f32)>> {
-    let backend = CanvasBackend::new(canvas_id).expect("cannot find canvas");
-    let root = backend.into_drawing_area();
-    let font: FontDesc = ("sans-serif", 20.0).into();
-
-    root.fill(&WHITE)?;
-
-    let mut chart = ChartBuilder::on(&root)
-        .margin(20u32)
-        .caption(format!("y=x^{}", power), font)
-        .x_label_area_size(30u32)
-        .y_label_area_size(30u32)
-        .build_cartesian_2d(-1f32..1f32, -1.2f32..1.2f32)?;
-
-    chart.configure_mesh().x_labels(3).y_labels(3).draw()?;
-
-    chart.draw_series(LineSeries::new(
-        (-50..=50)
-            .map(|x| x as f32 / 50.0)
-            .map(|x| (x, x.powf(power as f32))),
-        &RED,
-    ))?;
-
-    root.present()?;
-    return Ok(chart.into_coord_trans());
-}
diff --git a/tools/plotter/src/lib.rs b/tools/plotter/src/lib.rs
index 3952eb1d91..2972f468fd 100644
--- a/tools/plotter/src/lib.rs
+++ b/tools/plotter/src/lib.rs
@@ -3,9 +3,7 @@
 use wasm_bindgen::prelude::*;
 use web_sys::HtmlCanvasElement;
 
-mod func_plot;
 pub mod logarithm;
-mod plot3d;
 
 #[global_allocator]
 static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
@@ -29,15 +27,8 @@ pub struct Point {
 
 #[wasm_bindgen]
 impl Chart {
-    /// Draw provided power function on the canvas element using it's id.
+    /// Draw provided functions on the canvas.
     /// Return `Chart` struct suitable for coordinate conversion.
-    pub fn power(canvas_id: &str, power: i32) -> Result<Chart, JsValue> {
-        let map_coord = func_plot::draw(canvas_id, power).map_err(|err| err.to_string())?;
-        Ok(Chart {
-            convert: Box::new(move |coord| map_coord(coord).map(|(x, y)| (x.into(), y.into()))),
-        })
-    }
-
     pub fn logarithm(canvas: HtmlCanvasElement, max_x: f32) -> Result<Chart, JsValue> {
         let map_coord = logarithm::draw_logs(canvas, max_x).map_err(|err| err.to_string())?;
         Ok(Chart {
@@ -52,11 +43,6 @@ impl Chart {
         })
     }
 
-    pub fn plot3d(canvas: HtmlCanvasElement, pitch: f64, yaw: f64) -> Result<(), JsValue> {
-        plot3d::draw(canvas, pitch, yaw).map_err(|err| err.to_string())?;
-        Ok(())
-    }
-
     /// This function can be used to convert screen coordinates to
     /// chart coordinates.
     pub fn coord(&self, x: i32, y: i32) -> Option<Point> {
diff --git a/tools/plotter/src/logarithm.rs b/tools/plotter/src/logarithm.rs
index c157984c0c..2dfe20913f 100644
--- a/tools/plotter/src/logarithm.rs
+++ b/tools/plotter/src/logarithm.rs
@@ -37,7 +37,7 @@ pub fn draw_logs(
     chart.draw_series(LineSeries::new(
         (0..=RANGE_MAX)
             .map(|x| x as f32 * max_x / RANGE_MAX as f32)
-            .map(|x| (x, sc_ln(x))),
+            .map(|x| (x, big_uint_ln(x))),
         &GREEN,
     ))?;
 
@@ -70,7 +70,7 @@ pub fn draw_error(
     chart.draw_series(LineSeries::new(
         (0..=RANGE_MAX)
             .map(|x| x as f32 * max_x / RANGE_MAX as f32)
-            .map(|x| (x, sc_ln(x) - x.ln())),
+            .map(|x| (x, big_uint_ln(x) - x.ln())),
         &RED,
     ))?;
 
@@ -78,7 +78,7 @@ pub fn draw_error(
     return Ok(chart.into_coord_trans());
 }
 
-pub fn sc_ln(x: f32) -> f32 {
+fn big_uint_ln(x: f32) -> f32 {
     let bu = BigUint::<StaticApi>::from(x as u32);
     if let Some(ln_dec) = bu.ln() {
         let ln_units = ln_dec.into_raw_units().to_u64().unwrap();
@@ -93,9 +93,9 @@ pub fn sc_ln(x: f32) -> f32 {
 mod test {
     #[test]
     fn sc_ln_test() {
-        assert_eq!(super::sc_ln(0.0), 0.0);
-        assert!(super::sc_ln(1.0) > 0.0);
-        assert!(super::sc_ln(1.0) < 0.01);
-        assert!(super::sc_ln(2.0) > 0.6);
+        assert_eq!(super::big_uint_ln(0.0), 0.0);
+        assert!(super::big_uint_ln(1.0) > 0.0);
+        assert!(super::big_uint_ln(1.0) < 0.01);
+        assert!(super::big_uint_ln(2.0) > 0.6);
     }
 }
diff --git a/tools/plotter/src/plot3d.rs b/tools/plotter/src/plot3d.rs
deleted file mode 100644
index 15cfa1b907..0000000000
--- a/tools/plotter/src/plot3d.rs
+++ /dev/null
@@ -1,42 +0,0 @@
-use crate::DrawResult;
-use plotters::prelude::*;
-use plotters_canvas::CanvasBackend;
-use web_sys::HtmlCanvasElement;
-
-pub fn draw(canvas: HtmlCanvasElement, pitch: f64, yaw: f64) -> DrawResult<()> {
-    let area = CanvasBackend::with_canvas_object(canvas)
-        .unwrap()
-        .into_drawing_area();
-    area.fill(&WHITE)?;
-
-    let x_axis = (-3.0..3.0).step(0.1);
-    let z_axis = (-3.0..3.0).step(0.1);
-
-    let mut chart =
-        ChartBuilder::on(&area).build_cartesian_3d(x_axis.clone(), -3.0..3.0, z_axis.clone())?;
-
-    chart.with_projection(|mut pb| {
-        pb.yaw = yaw;
-        pb.pitch = pitch;
-        pb.scale = 0.7;
-        pb.into_matrix()
-    });
-
-    chart.configure_axes().draw()?;
-
-    chart.draw_series(
-        SurfaceSeries::xoz(x_axis.values(), z_axis.values(), |x: f64, z: f64| {
-            (x * x + z * z).cos()
-        })
-        .style(&BLUE.mix(0.2)),
-    )?;
-
-    chart.draw_series(LineSeries::new(
-        (-100..100)
-            .map(|y| y as f64 / 40.0)
-            .map(|y| ((y * 10.0).sin(), y, (y * 10.0).cos())),
-        &BLACK,
-    ))?;
-
-    Ok(())
-}
diff --git a/tools/plotter/www/index.html b/tools/plotter/www/index.html
index f188cc14b7..94054ef4d4 100644
--- a/tools/plotter/www/index.html
+++ b/tools/plotter/www/index.html
@@ -17,20 +17,9 @@ <h1>MultiversX SC function plots</h1>
 	    <div id="control">
 			<label for="plot-type">Demo: </label>
 			<select id="plot-type">
-				<option value="0">Graph of y=1</option>
-				<option value="1">Graph of y=x</option>
-				<option value="2">Graph of y=x^2</option>
-				<option value="3">Graph of y=x^3</option>
-				<option value="4">Graph of y=x^4</option>
-				<option value="5">Graph of y=x^5</option>
 				<option value="logarithm">Logarithms (BigUint)</option>
 				<option value="logarithm-error">Logarithm (BigUint) Error</option>
-				<option value="3d-plot">3D Plot Demo</option>
 			</select>
-			<div id="3d-control" class="hide">
-				<label for="pitch">Pitch: </label> <input type="range" min="0" max="157" id="pitch" value="10"> <br/>
-				<label for="yaw">Yaw: </label> <input type="range" min="0" max="314" id="yaw" value="50">
-			</div>
 			<div id="logControl" class="hide">
 				<label for="logMax">Max value: </label> <input id="logMax" type="range" min="1" max="100" value="10">
 			</div>
diff --git a/tools/plotter/www/index.js b/tools/plotter/www/index.js
index 71c0e627c3..478001eebc 100644
--- a/tools/plotter/www/index.js
+++ b/tools/plotter/www/index.js
@@ -5,10 +5,7 @@ class Chart { }
 const canvas = document.getElementById("canvas");
 const coord = document.getElementById("coord");
 const plotType = document.getElementById("plot-type");
-const pitch = document.getElementById("pitch");
-const yaw = document.getElementById("yaw");
 const logMax = document.getElementById("logMax");
-const control = document.getElementById("3d-control");
 const logControl = document.getElementById("logControl");
 const status = document.getElementById("status");
 
@@ -35,10 +32,6 @@ export function setup(WasmChart) {
 function setupUI() {
 	status.innerText = "WebAssembly loaded!";
 	plotType.addEventListener("change", updatePlot);
-	yaw.addEventListener("change", updatePlot);
-	pitch.addEventListener("change", updatePlot);
-	yaw.addEventListener("input", updatePlot);
-	pitch.addEventListener("input", updatePlot);
 	logMax.addEventListener("input", updatePlot);
 	window.addEventListener("resize", setupCanvas);
 	window.addEventListener("mousemove", onMouseMove);
@@ -74,13 +67,6 @@ function onMouseMove(event) {
 	}
 }
 
-function updatePlot3d() {
-	let yaw_value = Number(yaw.value) / 100.0;
-	let pitch_value = Number(pitch.value) / 100.0;
-	Chart.plot3d(canvas, pitch_value, yaw_value);
-	coord.innerText = `Pitch:${pitch_value}, Yaw:${yaw_value}`
-}
-
 /** Redraw currently selected plot. */
 function updatePlot() {
 	const selected = plotType.selectedOptions[0];
@@ -89,24 +75,15 @@ function updatePlot() {
 	const start = performance.now();
 	switch (selected.value) {
 		case "logarithm":
-			control.classList.add("hide");
 			logControl.classList.remove("hide");
 			chart = Chart.logarithm(canvas, Number(logMax.value));
 			break;
 		case "logarithm-error":
-			control.classList.add("hide");
 			logControl.classList.remove("hide");
 			chart = Chart.logarithm_error(canvas, Number(logMax.value));
 			break;
-		case "3d-plot":
-			control.classList.remove("hide");
-			logControl.classList.add("hide");
-			updatePlot3d();
-			break;
 		default:
-			control.classList.add("hide");
 			logControl.classList.add("hide");
-			chart = Chart.power("canvas", Number(selected.value));
 	}
 
 	const end = performance.now();

From d4d6e9ccb80afc7ccee8ad7d1ef9a9425e4e4f4f Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Wed, 19 Jun 2024 10:51:00 +0300
Subject: [PATCH 20/20] plotters - log error better baseline

---
 tools/plotter/src/logarithm.rs | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/tools/plotter/src/logarithm.rs b/tools/plotter/src/logarithm.rs
index 2dfe20913f..93765864d2 100644
--- a/tools/plotter/src/logarithm.rs
+++ b/tools/plotter/src/logarithm.rs
@@ -30,7 +30,7 @@ pub fn draw_logs(
     chart.draw_series(LineSeries::new(
         (0..=RANGE_MAX)
             .map(|x| x as f32 * max_x / RANGE_MAX as f32)
-            .map(|x| (x, x.ln())),
+            .map(|x| (x, int_ln_baseline(x))),
         &RED,
     ))?;
 
@@ -62,7 +62,7 @@ pub fn draw_error(
         .caption(format!("y=logarithm error, x=1..{max_x}"), font)
         .x_label_area_size(30u32)
         .y_label_area_size(30u32)
-        .build_cartesian_2d(0f32..max_x, -0.5f32..0.5f32)?;
+        .build_cartesian_2d(0f32..max_x, -0.0001f32..0.0001f32)?;
 
     chart.configure_mesh().x_labels(3).y_labels(3).draw()?;
 
@@ -70,7 +70,7 @@ pub fn draw_error(
     chart.draw_series(LineSeries::new(
         (0..=RANGE_MAX)
             .map(|x| x as f32 * max_x / RANGE_MAX as f32)
-            .map(|x| (x, big_uint_ln(x) - x.ln())),
+            .map(|x| (x, big_uint_ln(x) - int_ln_baseline(x))),
         &RED,
     ))?;
 
@@ -89,6 +89,15 @@ fn big_uint_ln(x: f32) -> f32 {
     }
 }
 
+fn int_ln_baseline(x: f32) -> f32 {
+    let floor = x.trunc();
+    if floor == 0.0 {
+        0.0
+    } else {
+        floor.ln()
+    }
+}
+
 #[cfg(test)]
 mod test {
     #[test]