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#pragma once
#ifndef FP16_BITCASTS_H
#define FP16_BITCASTS_H
#if defined(__cplusplus) && (__cplusplus >= 201103L)
#include <cstdint>
#elif !defined(__OPENCL_VERSION__)
#include <stdint.h>
#endif
#if defined(__INTEL_COMPILER)
#include <immintrin.h>
#endif
#if defined(_MSC_VER) && (defined(_M_ARM) || defined(_M_ARM64))
#include <intrin.h>
#endif
static inline float fp32_from_bits(uint32_t w) {
#if defined(__OPENCL_VERSION__)
return as_float(w);
#elif defined(__CUDA_ARCH__)
return __uint_as_float((unsigned int) w);
#elif defined(__INTEL_COMPILER)
return _castu32_f32(w);
#elif defined(_MSC_VER) && (defined(_M_ARM) || defined(_M_ARM64))
return _CopyFloatFromInt32((__int32) w);
#else
union {
uint32_t as_bits;
float as_value;
} fp32 = { w };
return fp32.as_value;
#endif
}
static inline uint32_t fp32_to_bits(float f) {
#if defined(__OPENCL_VERSION__)
return as_uint(f);
#elif defined(__CUDA_ARCH__)
return (uint32_t) __float_as_uint(f);
#elif defined(__INTEL_COMPILER)
return _castf32_u32(f);
#elif defined(_MSC_VER) && (defined(_M_ARM) || defined(_M_ARM64))
return (uint32_t) _CopyInt32FromFloat(f);
#else
union {
float as_value;
uint32_t as_bits;
} fp32 = { f };
return fp32.as_bits;
#endif
}
static inline double fp64_from_bits(uint64_t w) {
#if defined(__OPENCL_VERSION__)
return as_double(w);
#elif defined(__CUDA_ARCH__)
return __longlong_as_double((long long) w);
#elif defined(__INTEL_COMPILER)
return _castu64_f64(w);
#elif defined(_MSC_VER) && (defined(_M_ARM) || defined(_M_ARM64))
return _CopyDoubleFromInt64((__int64) w);
#else
union {
uint64_t as_bits;
double as_value;
} fp64 = { w };
return fp64.as_value;
#endif
}
static inline uint64_t fp64_to_bits(double f) {
#if defined(__OPENCL_VERSION__)
return as_ulong(f);
#elif defined(__CUDA_ARCH__)
return (uint64_t) __double_as_longlong(f);
#elif defined(__INTEL_COMPILER)
return _castf64_u64(f);
#elif defined(_MSC_VER) && (defined(_M_ARM) || defined(_M_ARM64))
return (uint64_t) _CopyInt64FromDouble(f);
#else
union {
double as_value;
uint64_t as_bits;
} fp64 = { f };
return fp64.as_bits;
#endif
}
#endif /* FP16_BITCASTS_H */
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