From e2041f4d5de01cb03b52908d36e9602b8c4a2479 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Sat, 27 May 2023 07:19:07 -0700 Subject: fpu: Add float64_to_int{32,64}_modulo MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add versions of float64_to_int* which do not saturate the result. Reviewed-by: Christoph Muellner Tested-by: Christoph Muellner Signed-off-by: Richard Henderson Reviewed-by: Alex Bennée Message-Id: <20230527141910.1885950-2-richard.henderson@linaro.org> --- fpu/softfloat.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'fpu/softfloat.c') diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 42e6c188b4..0cc130ae9b 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 */ -- cgit 1.4.1