diff options
Diffstat (limited to 'fpu/softfloat.c')
| -rw-r--r-- | fpu/softfloat.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 60b4702..ce21b64 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -3480,6 +3480,61 @@ static uint64_t float128_to_uint64_scalbn(float128 a, FloatRoundMode rmode, return parts_float_to_uint(&p, rmode, scale, UINT64_MAX, s); } +static Int128 float128_to_uint128_scalbn(float128 a, FloatRoundMode rmode, + int scale, float_status *s) +{ + int flags = 0; + Int128 r; + FloatParts128 p; + + float128_unpack_canonical(&p, a, s); + + switch (p.cls) { + case float_class_snan: + flags |= float_flag_invalid_snan; + /* fall through */ + case float_class_qnan: + flags |= float_flag_invalid; + r = UINT128_MAX; + break; + + case float_class_inf: + flags = float_flag_invalid | float_flag_invalid_cvti; + r = p.sign ? int128_zero() : UINT128_MAX; + break; + + case float_class_zero: + return int128_zero(); + + case float_class_normal: + if (parts_round_to_int_normal(&p, rmode, scale, 128 - 2)) { + flags = float_flag_inexact; + if (p.cls == float_class_zero) { + r = int128_zero(); + break; + } + } + + if (p.sign) { + flags = float_flag_invalid | float_flag_invalid_cvti; + r = int128_zero(); + } else if (p.exp <= 127) { + int shift = 127 - p.exp; + r = int128_urshift(int128_make128(p.frac_lo, p.frac_hi), shift); + } else { + flags = float_flag_invalid | float_flag_invalid_cvti; + r = UINT128_MAX; + } + break; + + default: + g_assert_not_reached(); + } + + float_raise(flags, s); + return r; +} + uint8_t float16_to_uint8(float16 a, float_status *s) { return float16_to_uint8_scalbn(a, s->float_rounding_mode, 0, s); @@ -3540,6 +3595,11 @@ uint64_t float128_to_uint64(float128 a, float_status *s) return float128_to_uint64_scalbn(a, s->float_rounding_mode, 0, s); } +Int128 float128_to_uint128(float128 a, float_status *s) +{ + return float128_to_uint128_scalbn(a, s->float_rounding_mode, 0, s); +} + uint16_t float16_to_uint16_round_to_zero(float16 a, float_status *s) { return float16_to_uint16_scalbn(a, float_round_to_zero, 0, s); @@ -3595,6 +3655,11 @@ uint64_t float128_to_uint64_round_to_zero(float128 a, float_status *s) return float128_to_uint64_scalbn(a, float_round_to_zero, 0, s); } +Int128 float128_to_uint128_round_to_zero(float128 a, float_status *s) +{ + return float128_to_uint128_scalbn(a, float_round_to_zero, 0, s); +} + uint16_t bfloat16_to_uint16(bfloat16 a, float_status *s) { return bfloat16_to_uint16_scalbn(a, s->float_rounding_mode, 0, s); |