softfloat: Add scaling float-to-int routines

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>

1 files changed, 59 insertions, 20 deletions

diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 038e375..cc1b58b 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -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);
+int64_t float32_to_int64(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);
-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);
+
+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);
-int64_t float32_to_int64_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);
+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);
+
+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);
-int64_t float64_to_int64(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);
+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);