features.h

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#pragma once
#include <stdbool.h>

 
namespace argon {
enum class Platform {
  NEON,
  MVE,
  SIMDe,
};
}
 
#ifdef __ARM_NEON
namespace argon {
constexpr Platform platform = Platform::NEON;
}
#define ARGON_PLATFORM_NEON true
#define ARGON_HAS_FLOAT true
 
#if (__ARM_ARCH >= 8)
 
#if (__arm__)  // A32
 
#define ARGON_HAS_HALF_FLOAT true
#define ARGON_HAS_SINGLE_FLOAT true
#define ARGON_HAS_DOUBLE_FLOAT false
 
#elif (__aarch64__)  // A64
 
#define ARGON_HAS_HALF_FLOAT true
#define ARGON_HAS_SINGLE_FLOAT true
#define ARGON_HAS_DOUBLE_FLOAT true
 
#endif
 
#else
 
#define ARGON_HAS_HALF_FLOAT (__ARM_NEON_FP & 2)
#define ARGON_HAS_SINGLE_FLOAT (__ARM_NEON_FP & 4)
#define ARGON_HAS_DOUBLE_FLOAT (__ARM_NEON_FP & 8)
 
#endif
 
#elifdef __ARM_FEATURE_MVE
namespace argon {
constexpr Platform platform = Platform::MVE;
}
#define ARGON_PLATFORM_MVE true
 
#if (__ARM_FEATURE_MVE & 2)
#define ARGON_HAS_FLOAT true
#define ARGON_HAS_HALF_FLOAT true
#define ARGON_HAS_SINGLE_FLOAT true
#else
#define ARGON_HAS_FLOAT false
#define ARGON_HAS_HALF_FLOAT false
#define ARGON_HAS_SINGLE_FLOAT false
#endif
 
#else
namespace argon {
constexpr Platform platform = Platform::SIMDe;
}
#define ARGON_PLATFORM_SIMDE true
#define ARGON_HAS_FLOAT true
#define ARGON_HAS_HALF_FLOAT false
#define ARGON_HAS_SINGLE_FLOAT true
#define ARGON_HAS_DOUBLE_FLOAT false
#endif
 
#ifndef ARGON_USE_COMPILER_EXTENSIONS
#if !defined(_MSC_VER) || defined(__clang__)
#define ARGON_USE_COMPILER_EXTENSIONS 1
#else
#define ARGON_USE_COMPILER_EXTENSIONS 0
#endif
#endif
 
/*
#define XSTR(x) STR(x)
#define STR(x) #x
#pragma message "DWORD: " XSTR(ARGON_HAS_DWORD)
#pragma message "SINGLE_FLOAT: " XSTR(ARGON_HAS_SINGLE_FLOAT)
#pragma message "HALF_FLOAT: " XSTR(ARGON_HAS_HALF_FLOAT)
#pragma message "DOUBLE_FLOAT: " XSTR(ARGON_HAS_DOUBLE_FLOAT)
#pragma message "__ARM_NEON: " XSTR(__ARM_NEON)
#pragma message "__ARM_NEON_FP: " XSTR(__ARM_NEON_FP)
#pragma message "__ARM_FP: " XSTR(__ARM_FP)
*/