77 lines
1.5 KiB
C++
77 lines
1.5 KiB
C++
#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
|
|
|
|
|
|
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);
|
|
#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);
|
|
#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);
|
|
#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);
|
|
#else
|
|
union {
|
|
double as_value;
|
|
uint64_t as_bits;
|
|
} fp64 = { f };
|
|
return fp64.as_bits;
|
|
#endif
|
|
}
|
|
|
|
#endif /* FP16_BITCASTS_H */
|