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[SYCL][libdevice] Add type cast functions between half and float/integral type #6930

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Merged
merged 11 commits into from
Oct 26, 2022
Merged

[SYCL][libdevice] Add type cast functions between half and float/integral type #6930

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498f628
add fp2half
jinge90 Sep 23, 2022
1b87190
Merge remote-tracking branch 'upstream/sycl' into FP32_64_to_half
jinge90 Sep 23, 2022
ed6b1ff
enable __imf_float2half_* in libdevice
jinge90 Sep 26, 2022
55764e2
[SYCL][libdevice] Add type cast util functions between half-precision…
jinge90 Oct 1, 2022
21f5dd6
fix bug of comparison between signed and unsigned value
jinge90 Oct 2, 2022
64b658f
add exp bias after exp adjustment
jinge90 Oct 2, 2022
09656e8
conforms to IEEE-754 standars for int2half conversion when overflow h…
jinge90 Oct 4, 2022
c0f03c0
fix bug in int2half overflow handing in RTP mode
jinge90 Oct 4, 2022
1b6394f
Add double2half
jinge90 Oct 5, 2022
019b047
Merge remote-tracking branch 'origin/sycl' into FP32_64_to_half
jinge90 Oct 8, 2022
fca7f63
move rounding mode to device.h
jinge90 Oct 8, 2022
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9 changes: 9 additions & 0 deletions libdevice/device.h
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Original file line number Diff line number Diff line change
Expand Up @@ -40,4 +40,13 @@
#define DEVICE_EXTERN_C_INLINE DEVICE_EXTERN_C __attribute__((always_inline))
#endif // __LIBDEVICE_HOST_IMPL__

// Rounding mode are used internally by type convert functions in imf libdevice
// and we don't want to include system's fenv.h, so we define ourselves'.
typedef enum {
__IML_RTE, // round to nearest-even
__IML_RTZ, // round to zero
__IML_RTP, // round to +inf
__IML_RTN, // round to -inf
} __iml_rounding_mode;

#endif // __LIBDEVICE_DEVICE_H__
1 change: 1 addition & 0 deletions libdevice/device_imf.hpp
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Expand Up @@ -90,6 +90,7 @@ static inline TyFP __integral2FP_host(TyINT x, int rdMode) {
fesetround(roundingOriginal);
return res;
}
#pragma STDC FENV_ACCESS OFF
#endif // __LIBDEVICE_HOST_IMPL__

template <typename Ty> static inline Ty __imax(Ty x, Ty y) {
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