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softfloat: Add scaling float-to-int routines

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Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180814002653.12828-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2018-08-24 13:17:30 +01:00 • committed by Peter Maydell
parent 2abdfe2440
commit 2f6c74be59
2 changed files with 379 additions and 97 deletions
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85
include/fpu/softfloat.h
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@ -243,21 +243,34 @@ float128 uint64_to_float128(uint64_t, float_status *status);
/*----------------------------------------------------------------------------
| Software half-precision conversion routines.
*----------------------------------------------------------------------------*/
float16 float32_to_float16(float32, bool ieee, float_status *status);
float32 float16_to_float32(float16, bool ieee, float_status *status);
float16 float64_to_float16(float64 a, bool ieee, float_status *status);
float64 float16_to_float64(float16 a, bool ieee, float_status *status);
int16_t float16_to_int16_scalbn(float16, int, int, float_status *status);
int32_t float16_to_int32_scalbn(float16, int, int, float_status *status);
int64_t float16_to_int64_scalbn(float16, int, int, float_status *status);
int16_t float16_to_int16(float16, float_status *status);
uint16_t float16_to_uint16(float16 a, float_status *status);
int16_t float16_to_int16_round_to_zero(float16, float_status *status);
uint16_t float16_to_uint16_round_to_zero(float16 a, float_status *status);
int32_t float16_to_int32(float16, float_status *status);
uint32_t float16_to_uint32(float16 a, float_status *status);
int32_t float16_to_int32_round_to_zero(float16, float_status *status);
uint32_t float16_to_uint32_round_to_zero(float16 a, float_status *status);
int64_t float16_to_int64(float16, float_status *status);
uint64_t float16_to_uint64(float16 a, float_status *status);
int16_t float16_to_int16_round_to_zero(float16, float_status *status);
int32_t float16_to_int32_round_to_zero(float16, float_status *status);
int64_t float16_to_int64_round_to_zero(float16, float_status *status);
uint16_t float16_to_uint16_scalbn(float16 a, int, int, float_status *status);
uint32_t float16_to_uint32_scalbn(float16 a, int, int, float_status *status);
uint64_t float16_to_uint64_scalbn(float16 a, int, int, float_status *status);
uint16_t float16_to_uint16(float16 a, float_status *status);
uint32_t float16_to_uint32(float16 a, float_status *status);
uint64_t float16_to_uint64(float16 a, float_status *status);
uint16_t float16_to_uint16_round_to_zero(float16 a, float_status *status);
uint32_t float16_to_uint32_round_to_zero(float16 a, float_status *status);
uint64_t float16_to_uint64_round_to_zero(float16 a, float_status *status);
/*----------------------------------------------------------------------------
@ -347,18 +360,31 @@ float16 float16_default_nan(float_status *status);
/*----------------------------------------------------------------------------
| Software IEC/IEEE single-precision conversion routines.
*----------------------------------------------------------------------------*/
int16_t float32_to_int16_scalbn(float32, int, int, float_status *status);
int32_t float32_to_int32_scalbn(float32, int, int, float_status *status);
int64_t float32_to_int64_scalbn(float32, int, int, float_status *status);
int16_t float32_to_int16(float32, float_status *status);
uint16_t float32_to_uint16(float32, float_status *status);
int16_t float32_to_int16_round_to_zero(float32, float_status *status);
uint16_t float32_to_uint16_round_to_zero(float32, float_status *status);
int32_t float32_to_int32(float32, float_status *status);
int32_t float32_to_int32_round_to_zero(float32, float_status *status);
uint32_t float32_to_uint32(float32, float_status *status);
uint32_t float32_to_uint32_round_to_zero(float32, float_status *status);
int64_t float32_to_int64(float32, float_status *status);
uint64_t float32_to_uint64(float32, float_status *status);
uint64_t float32_to_uint64_round_to_zero(float32, float_status *status);
int16_t float32_to_int16_round_to_zero(float32, float_status *status);
int32_t float32_to_int32_round_to_zero(float32, float_status *status);
int64_t float32_to_int64_round_to_zero(float32, float_status *status);
uint16_t float32_to_uint16_scalbn(float32, int, int, float_status *status);
uint32_t float32_to_uint32_scalbn(float32, int, int, float_status *status);
uint64_t float32_to_uint64_scalbn(float32, int, int, float_status *status);
uint16_t float32_to_uint16(float32, float_status *status);
uint32_t float32_to_uint32(float32, float_status *status);
uint64_t float32_to_uint64(float32, float_status *status);
uint16_t float32_to_uint16_round_to_zero(float32, float_status *status);
uint32_t float32_to_uint32_round_to_zero(float32, float_status *status);
uint64_t float32_to_uint64_round_to_zero(float32, float_status *status);
float64 float32_to_float64(float32, float_status *status);
floatx80 float32_to_floatx80(float32, float_status *status);
float128 float32_to_float128(float32, float_status *status);
@ -476,18 +502,31 @@ float32 float32_default_nan(float_status *status);
/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision conversion routines.
*----------------------------------------------------------------------------*/
int16_t float64_to_int16_scalbn(float64, int, int, float_status *status);
int32_t float64_to_int32_scalbn(float64, int, int, float_status *status);
int64_t float64_to_int64_scalbn(float64, int, int, float_status *status);
int16_t float64_to_int16(float64, float_status *status);
uint16_t float64_to_uint16(float64, float_status *status);
int16_t float64_to_int16_round_to_zero(float64, float_status *status);
uint16_t float64_to_uint16_round_to_zero(float64, float_status *status);
int32_t float64_to_int32(float64, float_status *status);
int32_t float64_to_int32_round_to_zero(float64, float_status *status);
uint32_t float64_to_uint32(float64, float_status *status);
uint32_t float64_to_uint32_round_to_zero(float64, float_status *status);
int64_t float64_to_int64(float64, float_status *status);
int16_t float64_to_int16_round_to_zero(float64, float_status *status);
int32_t float64_to_int32_round_to_zero(float64, float_status *status);
int64_t float64_to_int64_round_to_zero(float64, float_status *status);
uint64_t float64_to_uint64(float64 a, float_status *status);
uint64_t float64_to_uint64_round_to_zero(float64 a, float_status *status);
uint16_t float64_to_uint16_scalbn(float64, int, int, float_status *status);
uint32_t float64_to_uint32_scalbn(float64, int, int, float_status *status);
uint64_t float64_to_uint64_scalbn(float64, int, int, float_status *status);
uint16_t float64_to_uint16(float64, float_status *status);
uint32_t float64_to_uint32(float64, float_status *status);
uint64_t float64_to_uint64(float64, float_status *status);
uint16_t float64_to_uint16_round_to_zero(float64, float_status *status);
uint32_t float64_to_uint32_round_to_zero(float64, float_status *status);
uint64_t float64_to_uint64_round_to_zero(float64, float_status *status);
float32 float64_to_float32(float64, float_status *status);
floatx80 float64_to_floatx80(float64, float_status *status);
float128 float64_to_float128(float64, float_status *status);