Add NSIMD 2.2

recipes/nsimd/2.x/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.1)
+project(cmake_wrapper)
+
+include(conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_subdirectory("source_subfolder")

recipes/nsimd/2.x/conandata.yml

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+sources:
+  "2.2":
+    url: "https://github.com/agenium-scale/nsimd/archive/v2.2.tar.gz"
+    sha256: "7916bec6c8ea9ddc690a5bfc80fb1b9402f9e1b2a4b4bb6b6bb8eb5a07eb018e"

recipes/nsimd/2.x/conanfile.py

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+import os
+from conans import ConanFile, CMake, tools
+
+required_conan_version = ">=1.33.0"
+
+
+class NsimdConan(ConanFile):
+    name = "nsimd"
+    homepage = "https://github.com/agenium-scale/nsimd"
+    description = "Agenium Scale vectorization library for CPUs and GPUs"
+    topics = ("hpc", "neon", "cuda", "avx", "simd", "avx2", "sse2", "aarch64", "avx512", "sse42", "rocm", "sve", "neon128")
+    url = "https://github.com/conan-io/conan-center-index"
+    license = "MIT"
+    exports_sources = ["CMakeLists.txt", "patches/*"]
+    generators = "cmake"
+    settings = "os", "compiler", "build_type", "arch"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+        # This used only when building the library.
+        # Most functionality is header only.
+        "simd": [None, "cpu", "sse2", "sse42", "avx", "avx2", "avx512_knl", "avx512_skylake", "neon128", "aarch64", "sve", "sve128", "sve256", "sve512", "sve1024", "sve2048", "cuda", "rocm"]
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+        "simd": None
+    }
+
+    _cmake = None
+
+    @property
+    def _source_subfolder(self):
+        return "source_subfolder"
+
+    @property
+    def _build_subfolder(self):
+        return "build_subfolder"
+
+    def config_options(self):
+        if self.settings.os == "Windows":
+            del self.options.fPIC
+
+    def configure(self):
+        if self.options.shared:
+            del self.options.fPIC
+        # Most of the library is header only.
+        # cpp files do not use STL.
+        del self.settings.compiler.libcxx
+
+    def source(self):
+        tools.get(**self.conan_data["sources"][self.version], strip_root=True, destination=self._source_subfolder)
+
+    def _configure_cmake(self):
+        if self._cmake:
+            return self._cmake
+        self._cmake = CMake(self)
+        defs = {}
+        if self.options.simd:
+            defs["simd"] = self.options.simd
+        if self.settings.arch == "armv7hf":
+            defs["NSIMD_ARM32_IS_ARMEL"] = "OFF"
+        self._cmake.configure(build_folder=self._build_subfolder, defs=defs)
+        return self._cmake
+
+    def build(self):
+        # allow static library (not in patch file to avoid one patch per version)
+        tools.replace_in_file(os.path.join(self._source_subfolder, "CMakeLists.txt"),
+                              " SHARED ",
+                              " ")
+        cmake = self._configure_cmake()
+        cmake.build()
+
+    def package(self):
+        self.copy("LICENSE", dst="licenses", src=self._source_subfolder)
+        cmake = self._configure_cmake()
+        cmake.install()
+
+    def package_info(self):
+        self.cpp_info.libs = tools.collect_libs(self)

recipes/nsimd/2.x/test_package/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.1)
+project(test_package CXX)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_executable(${PROJECT_NAME} test_package.cpp)
+target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})

recipes/nsimd/2.x/test_package/conanfile.py

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+import os
+
+from conans import ConanFile, CMake, tools
+
+
+class NsimdTestConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if not tools.cross_building(self):
+            bin_path = os.path.join("bin", "test_package")
+            self.run(bin_path, run_environment=True)

recipes/nsimd/2.x/test_package/test_package.cpp

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+/* Tutorial from NSIMD library, modified to use a constant string */
+
+#include <nsimd/nsimd-all.hpp>
+
+#include <string>
+#include <vector>
+#include <iostream>
+
+#include <string.h>
+
+template <typename T>
+void uppercase_scalar(T *dst, const T *src, int n) {
+  for (int i = 0; i < n; i++) {
+    if (src[i] >= 'a' && src[i] <= 'z') {
+      dst[i] = src[i] + ('A' - 'a');
+    } else {
+      dst[i] = src[i];
+    }
+  }
+}
+
+template <typename T>
+void uppercase_simd(T *dst, const T *src, int n) {
+  using namespace nsimd;
+  typedef pack<T> p_t;
+  typedef packl<T> pl_t;
+  int l = len<p_t>();
+
+  int i;
+  for (i = 0; i + l <= n; i += l) {
+    p_t text = loadu<p_t>(src + i);
+    pl_t mask = text >= 'a' && text <= 'z';
+    p_t then_pack = text + ('A' - 'a');
+    p_t TEXT = if_else(mask, then_pack, text);
+    storeu(dst + i, TEXT);
+  }
+
+  pl_t mask = mask_for_loop_tail<pl_t>(i, n);
+  p_t text = maskz_loadu(mask, src + i);
+  p_t TEXT = if_else(text >= 'a' && text <= 'z', text + ('A' - 'a'), text);
+  mask_storeu(mask, dst + i, TEXT);
+}
+
+int test_uppercase_simd() {
+  std::string input("The quick brown fox jumps over the lazy dog");
+
+  std::cout << "Original text         : " << input << std::endl;
+
+  std::vector<i8> dst_scalar(input.size() + 1);
+  uppercase_scalar(&dst_scalar[0], (i8 *)input.c_str(), (int)input.size());
+  std::cout << "Scalar uppercase text: " << &dst_scalar[0] << std::endl;
+
+  std::vector<i8> dst_simd(input.size() + 1);
+  uppercase_simd(&dst_simd[0], (i8 *)input.c_str(), (int)input.size());
+  std::cout << "NSIMD uppercase text : " << &dst_simd[0] << std::endl;
+
+  if (memcmp(&dst_scalar[0], &dst_simd[0], dst_simd.size()) != 0) {
+    std::cerr << "ERROR: SIMD results don't match!" << std::endl;
+    return 1;
+  }
+
+  return 0;
+}
+
+// From nsimd-all.cpp
+
+int test_unroll() {
+  using namespace nsimd;
+  const int unroll = 3;
+  typedef pack<float, unroll> upack;
+
+  const int n_max = unroll * NSIMD_MAX_LEN(f32);
+  const int n = len(upack());
+  float buf[n_max];
+
+  for(int i = 0; i < n; i++) {
+    buf[i] = float(i);
+  }
+
+  upack p = loadu<upack>(buf);
+  p = -(p * p) + 1.0f;
+  storeu(buf, p);
+
+  for (int i = 0; i < n; i++) {
+    fprintf(stdout, "%f vs %f\n", double(buf[i]), double(-i * i));
+  }
+
+  for (int i = 0; i < n; i++) {
+    if (buf[i] != float(-(i * i) + 1)) {
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+int main() {
+  if (test_uppercase_simd() || test_unroll())
+    return 1;
+
+  return 0;
+}

recipes/nsimd/config.yml

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+versions:
+  "2.2":
+    folder: 2.x