The branch main has been updated by vexeduxr: URL: https://cgit.FreeBSD.org/src/commit/?id=25cca51ed294890d20a3c0290814cd26875db686
commit 25cca51ed294890d20a3c0290814cd26875db686 Author: Ahmad Khalifa <[email protected]> AuthorDate: 2025-10-10 09:30:52 +0000 Commit: Ahmad Khalifa <[email protected]> CommitDate: 2025-10-11 10:13:19 +0000 libm: remainder: make sure x is zero Make sure the entirety of x is zero before flipping the sign bit. Otherwise the sign would be wrong for small values of x when x is negative and |n*y| > |x| Reported by: alfredo PR: 251091 Reviewed by: kargl MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D53023 --- lib/msun/src/e_remainder.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/msun/src/e_remainder.c b/lib/msun/src/e_remainder.c index a5fb7141d01a..cc6cd320073e 100644 --- a/lib/msun/src/e_remainder.c +++ b/lib/msun/src/e_remainder.c @@ -64,8 +64,8 @@ remainder(double x, double p) if(x>=p_half) x -= p; } } - GET_HIGH_WORD(hx,x); - if ((hx&0x7fffffff)==0) hx = 0; + EXTRACT_WORDS(hx, lx, x); + if (((hx&0x7fffffff)|lx) == 0) hx = 0; SET_HIGH_WORD(x,hx^sx); return x; }
