On Sun, 18 Jul 2021, LIU Hao wrote:
在 2021-07-15 05:16, Martin Storsjö 写道:+#if __INTRINSIC_PROLOG(_bittestandcomplement) +unsigned char _bittestandcomplement(__LONG32 *a, __LONG32 b); +#if !__has_builtin(_bittestandcomplement) +__INTRINSICS_USEINLINE +unsigned char _bittestandcomplement(__LONG32 *__a, __LONG32 __b) +{ + unsigned char __v = (*__a >> __b) & 1; + *__a = (*__a & ~(1UL << __b)) | ((__v ^ 1) << __b);Could this be simplified to `*__a ^= 1UL << __b`, like other bitwise AND and OR operations?
Doh, right, that should work yes. // Martin _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
