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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-05-27 07:19:07 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-07-01 08:26:54 +0200 |
| commit | e2041f4d5de01cb03b52908d36e9602b8c4a2479 (patch) | |
| tree | 400f8bcf2d1326b8099154fbc07c8dccfea360c6 /fpu/softfloat.c | |
| parent | e665cf72fe6357945fdbecf747dac58c0c7c7c66 (diff) | |
| download | qemu-e2041f4d5de01cb03b52908d36e9602b8c4a2479.zip qemu-e2041f4d5de01cb03b52908d36e9602b8c4a2479.tar.gz qemu-e2041f4d5de01cb03b52908d36e9602b8c4a2479.tar.bz2 | |
fpu: Add float64_to_int{32,64}_modulo
Add versions of float64_to_int* which do not saturate the result.
Reviewed-by: Christoph Muellner <christoph.muellner@vrull.eu>
Tested-by: Christoph Muellner <christoph.muellner@vrull.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230527141910.1885950-2-richard.henderson@linaro.org>
Diffstat (limited to 'fpu/softfloat.c')
| -rw-r--r-- | fpu/softfloat.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 42e6c18..0cc130a 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -852,11 +852,24 @@ static uint64_t parts128_float_to_uint(FloatParts128 *p, FloatRoundMode rmode, #define parts_float_to_uint(P, R, Z, M, S) \ PARTS_GENERIC_64_128(float_to_uint, P)(P, R, Z, M, S) +static int64_t parts64_float_to_sint_modulo(FloatParts64 *p, + FloatRoundMode rmode, + int bitsm1, float_status *s); +static int64_t parts128_float_to_sint_modulo(FloatParts128 *p, + FloatRoundMode rmode, + int bitsm1, float_status *s); + +#define parts_float_to_sint_modulo(P, R, M, S) \ + PARTS_GENERIC_64_128(float_to_sint_modulo, P)(P, R, M, S) + static void parts64_sint_to_float(FloatParts64 *p, int64_t a, int scale, float_status *s); static void parts128_sint_to_float(FloatParts128 *p, int64_t a, int scale, float_status *s); +#define parts_float_to_sint(P, R, Z, MN, MX, S) \ + PARTS_GENERIC_64_128(float_to_sint, P)(P, R, Z, MN, MX, S) + #define parts_sint_to_float(P, I, Z, S) \ PARTS_GENERIC_64_128(sint_to_float, P)(P, I, Z, S) @@ -3409,6 +3422,24 @@ int64_t bfloat16_to_int64_round_to_zero(bfloat16 a, float_status *s) return bfloat16_to_int64_scalbn(a, float_round_to_zero, 0, s); } +int32_t float64_to_int32_modulo(float64 a, FloatRoundMode rmode, + float_status *s) +{ + FloatParts64 p; + + float64_unpack_canonical(&p, a, s); + return parts_float_to_sint_modulo(&p, rmode, 31, s); +} + +int64_t float64_to_int64_modulo(float64 a, FloatRoundMode rmode, + float_status *s) +{ + FloatParts64 p; + + float64_unpack_canonical(&p, a, s); + return parts_float_to_sint_modulo(&p, rmode, 63, s); +} + /* * Floating-point to unsigned integer conversions */ |