在 2019/12/12 21:34, Liu Hao 写道: > 在 2019/12/12 21:22, Liu Hao 写道: >> This is wrong. Because FMA shall result the result exactly once. If we > > ^ round >
It turns out that FMA for `float` cannot be implemented using doubles, either. The mul-add operation could result in a mantissa having 72 bits which cannot be stored safely even in `long double`. Hence every intermediate result has to be in `float`. These patches are obsolete. I will send new ones soon. -- Best regards, LH_Mouse
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Mingw-w64-public mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
