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softfloat: Define convert operations for bfloat16

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Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200813071421.2509-3-zhiwei_liu@c-sky.com>
[rth: Use FloatRoundMode for conversion functions.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
LIU Zhiwei 2020-08-13 15:14:20 +08:00 • committed by Richard Henderson
parent 8282310d85
commit 34f0c0a98a
2 changed files with 277 additions and 0 deletions
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54
include/fpu/softfloat.h
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@ -348,6 +348,60 @@ static inline bool float16_unordered_quiet(float16 a, float16 b,
#define float16_three make_float16(0x4200)
#define float16_infinity make_float16(0x7c00)
/*----------------------------------------------------------------------------
| Software bfloat16 conversion routines.
*----------------------------------------------------------------------------*/
bfloat16 bfloat16_round_to_int(bfloat16, float_status *status);
bfloat16 float32_to_bfloat16(float32, float_status *status);
float32 bfloat16_to_float32(bfloat16, float_status *status);
bfloat16 float64_to_bfloat16(float64 a, float_status *status);
float64 bfloat16_to_float64(bfloat16 a, float_status *status);
int16_t bfloat16_to_int16_scalbn(bfloat16, FloatRoundMode,
int, float_status *status);
int32_t bfloat16_to_int32_scalbn(bfloat16, FloatRoundMode,
int, float_status *status);
int64_t bfloat16_to_int64_scalbn(bfloat16, FloatRoundMode,
int, float_status *status);
int16_t bfloat16_to_int16(bfloat16, float_status *status);
int32_t bfloat16_to_int32(bfloat16, float_status *status);
int64_t bfloat16_to_int64(bfloat16, float_status *status);
int16_t bfloat16_to_int16_round_to_zero(bfloat16, float_status *status);
int32_t bfloat16_to_int32_round_to_zero(bfloat16, float_status *status);
int64_t bfloat16_to_int64_round_to_zero(bfloat16, float_status *status);
uint16_t bfloat16_to_uint16_scalbn(bfloat16 a, FloatRoundMode,
int, float_status *status);
uint32_t bfloat16_to_uint32_scalbn(bfloat16 a, FloatRoundMode,
int, float_status *status);
uint64_t bfloat16_to_uint64_scalbn(bfloat16 a, FloatRoundMode,
int, float_status *status);
uint16_t bfloat16_to_uint16(bfloat16 a, float_status *status);
uint32_t bfloat16_to_uint32(bfloat16 a, float_status *status);
uint64_t bfloat16_to_uint64(bfloat16 a, float_status *status);
uint16_t bfloat16_to_uint16_round_to_zero(bfloat16 a, float_status *status);
uint32_t bfloat16_to_uint32_round_to_zero(bfloat16 a, float_status *status);
uint64_t bfloat16_to_uint64_round_to_zero(bfloat16 a, float_status *status);
bfloat16 int16_to_bfloat16_scalbn(int16_t a, int, float_status *status);
bfloat16 int32_to_bfloat16_scalbn(int32_t a, int, float_status *status);
bfloat16 int64_to_bfloat16_scalbn(int64_t a, int, float_status *status);
bfloat16 uint16_to_bfloat16_scalbn(uint16_t a, int, float_status *status);
bfloat16 uint32_to_bfloat16_scalbn(uint32_t a, int, float_status *status);
bfloat16 uint64_to_bfloat16_scalbn(uint64_t a, int, float_status *status);
bfloat16 int16_to_bfloat16(int16_t a, float_status *status);
bfloat16 int32_to_bfloat16(int32_t a, float_status *status);
bfloat16 int64_to_bfloat16(int64_t a, float_status *status);
bfloat16 uint16_to_bfloat16(uint16_t a, float_status *status);
bfloat16 uint32_to_bfloat16(uint32_t a, float_status *status);
bfloat16 uint64_to_bfloat16(uint64_t a, float_status *status);
/*----------------------------------------------------------------------------
| Software bfloat16 operations.
*----------------------------------------------------------------------------*/