- Fixed a critical bug in the Math pacakge -- the Math::BigFloat is n…

…ow initialized on Math.new, otherwise the program freezes when calling a method such as Math.pi and Math::BigFloat is not initialized.

MANIFEST

@@ -812,6 +812,7 @@ scripts/Rosettacode/Terminal_control_Unicode_output.sf
 scripts/Rosettacode/Tokenize_a_string.sf
 scripts/Rosettacode/Topic_variable.sf
 scripts/Rosettacode/Tree_traversal.sf
+scripts/Rosettacode/Trigonometric_functions.sf
 scripts/Rosettacode/Unicode_strings.sf
 scripts/Rosettacode/Unicode_variable_names.sf
 scripts/Rosettacode/Universal_Turing_machine.sf

lib/Sidef/Math/Math.pm

@@ -4,7 +4,10 @@ package Sidef::Math::Math {
     our @ISA = qw(Sidef);
 
     sub new {
-        state $x = require Math::BigFloat;
+        state $x = do {
+            require Math::BigFloat;
+            Math::BigFloat->new;
+        };
         bless {}, __PACKAGE__;
     }
 

scripts/Rosettacode/Trigonometric_functions.sf

@@ -0,0 +1,26 @@
+#!/usr/bin/ruby
+
+#
+## http://rosettacode.org/wiki/Trigonometric_functions
+#
+
+var angle_deg = 45;
+var angle_rad = Math.pi/4;
+
+[
+    [Math.sin(angle_rad), Math.sin(Math.deg2rad(angle_deg))],
+    [Math.cos(angle_rad), Math.cos(Math.deg2rad(angle_deg))],
+    [Math.tan(angle_rad), Math.tan(Math.deg2rad(angle_deg))],
+    [Math.cot(angle_rad), Math.cot(Math.deg2rad(angle_deg))],
+].each { |arr|
+    say arr.join(" ");
+}
+
+[
+    Math.asin(Math.sin(angle_rad)),
+    Math.acos(Math.cos(angle_rad)),
+    Math.atan(Math.tan(angle_rad)),
+    Math.acot(Math.cot(angle_rad)),
+].each { |n|
+    say [n, Math.rad2deg(n)].join(" ");
+}