On 02/11/2014 05:51 AM, Peter Maydell wrote:
> @@ -2376,7 +2376,7 @@ float32 float32_muladd(float32 a, float32 b, float32 c, int flags STATUS_PARAM)
> if (cExp == 0) {
> normalizeFloat32Subnormal(cSig, &cExp, &cSig);
> }
> - cExp--;
> + cExp -= 2;
> cSig = (cSig | 0x00800000) << 7;
> return roundAndPackFloat32(cSign ^ signflip, cExp, cSig STATUS_VAR);
> }
> @@ -4107,7 +4107,7 @@ float64 float64_muladd(float64 a, float64 b, float64 c, int flags STATUS_PARAM)
> if (cExp == 0) {
> normalizeFloat64Subnormal(cSig, &cExp, &cSig);
> }
> - cExp--;
> + cExp -= 2;
> cSig = (cSig | 0x0010000000000000ULL) << 10;
> return roundAndPackFloat64(cSign ^ signflip, cExp, cSig STATUS_VAR);
> }
This should obviously be folded into the previous patch.
Probably with a comment reminding about roundAndPackFloat wanting an off-by-one
exponent.
Otherwise both get
Reviewed-by: Richard Henderson <rth@xxxxxxxxxxx>
r~
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