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| author | Richard Henderson <richard.henderson@linaro.org> | 2020-11-14 20:28:02 -0800 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-06-03 13:59:34 -0700 |
| commit | 39626b0ce830e6cd99459a8168b35c6a57be21bc (patch) | |
| tree | 69f212a2e959aa4e3ce0811f8e14009ada37fe90 /fpu/softfloat-parts.c.inc | |
| parent | 6eb169b89a509321c985346cea278d758108ada5 (diff) | |
| download | focaccia-qemu-39626b0ce830e6cd99459a8168b35c6a57be21bc.tar.gz focaccia-qemu-39626b0ce830e6cd99459a8168b35c6a57be21bc.zip | |
softfloat: Move scalbn_decomposed to softfloat-parts.c.inc
Rename to parts$N_scalbn. Reimplement float128_scalbn with FloatParts128. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'fpu/softfloat-parts.c.inc')
| -rw-r--r-- | fpu/softfloat-parts.c.inc | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index 3dacb5b4f0..bf935c4fc2 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -1075,3 +1075,24 @@ static FloatRelation partsN(compare)(FloatPartsN *a, FloatPartsN *b, b_sign: return b->sign ? float_relation_greater : float_relation_less; } + +/* + * Multiply A by 2 raised to the power N. + */ +static void partsN(scalbn)(FloatPartsN *a, int n, float_status *s) +{ + switch (a->cls) { + case float_class_snan: + case float_class_qnan: + parts_return_nan(a, s); + break; + case float_class_zero: + case float_class_inf: + break; + case float_class_normal: + a->exp += MIN(MAX(n, -0x10000), 0x10000); + break; + default: + g_assert_not_reached(); + } +} |