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222fa451a2
Pull Request resolved: https://github.com/pytorch/pytorch/pull/158976 Approved by: https://github.com/albanD, https://github.com/desertfire
39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
#pragma once
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#include <torch/headeronly/macros/Macros.h>
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#include <torch/headeronly/util/bit_cast.h>
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#include <cstdint>
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namespace torch::headeronly::detail {
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C10_HOST_DEVICE inline float fp32_from_bits(uint32_t w) {
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#if defined(__OPENCL_VERSION__)
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return as_float(w);
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#elif defined(__CUDA_ARCH__) || defined(__HIP_DEVICE_COMPILE__)
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return __uint_as_float((unsigned int)w);
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#elif defined(__INTEL_COMPILER)
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return _castu32_f32(w);
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#else
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return torch::headeronly::bit_cast<float>(w);
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#endif
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}
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C10_HOST_DEVICE inline uint32_t fp32_to_bits(float f) {
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#if defined(__OPENCL_VERSION__)
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return as_uint(f);
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#elif defined(__CUDA_ARCH__) || defined(__HIP_DEVICE_COMPILE__)
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return (uint32_t)__float_as_uint(f);
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#elif defined(__INTEL_COMPILER)
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return _castf32_u32(f);
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#else
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return torch::headeronly::bit_cast<uint32_t>(f);
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#endif
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}
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} // namespace torch::headeronly::detail
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namespace c10::detail {
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using torch::headeronly::detail::fp32_from_bits;
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using torch::headeronly::detail::fp32_to_bits;
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} // namespace c10::detail
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