[Bug c/115374] fmod() in x86_64 -O3 not using return value from the glibc's implementation if x87 FPU fprem returns NaN

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115374 Mario Hros changed: What|Removed |Added Resolution|--- |WONTFIX Status|WAITING

[Bug c/115374] fmod() in x86_64 -O3 not using return value from the glibc's implementation if x87 FPU fprem returns NaN

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115374 --- Comment #10 from Mario Hros --- That _.265t.optimized posted matches my observation. So the call into glibc fmod() is made to set errno eventually, ok. But shouldn't the returned value from the glibc call be used instead of returning NaN? I

[Bug c/115374] fmod() in x86_64 -O3 not using return value from the glibc's implementation if x87 FPU fprem returns NaN

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115374 --- Comment #7 from Mario Hros --- Created attachment 58373 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58373&action=edit reporoduction code, compile with -O3 -lm prints: is NaN and should not be errno = 0

[Bug c/115374] fmod() in x86_64 -O3 not using return value from the glibc's implementation if x87 FPU fprem returns NaN

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115374 --- Comment #4 from Mario Hros --- I already reported the problem in the code using MMX without EMMS - it was FFMPEG (https://patchwork.ffmpeg.org/project/ffmpeg/patch/am9p193mb194004554ecf79f43679cfb2af...@am9p193mb1940.eurp193.prod.outlook.com

[Bug c/115374] fmod() in x86_64 -O3 not using return value from the glibc's implementation if x87 FPU fprem returns NaN

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115374 Mario Hros changed: What|Removed |Added Attachment #58371|0 |1 is obsolete|

[Bug c/115374] New: fmod() in x86_64 -O3 not using return value from the glibc's implementation if x87 FPU fprem returns NaN

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115374 Bug ID: 115374 Summary: fmod() in x86_64 -O3 not using return value from the glibc's implementation if x87 FPU fprem returns NaN Product: gcc Version: 14.1.1 Status: UNC