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From: "bruno at clisp dot org" <sourceware-bugzilla@sourceware.org> To: glibc-bugs@sourceware.org Subject: [Bug math/30998] fesetexceptflag clears too many floating-point exception flags on alpha Date: Tue, 24 Oct 2023 18:24:06 +0000 [thread overview] Message-ID: <bug-30998-131-w9M1d5rMmq@http.sourceware.org/bugzilla/> (raw) In-Reply-To: <bug-30998-131@http.sourceware.org/bugzilla/> https://sourceware.org/bugzilla/show_bug.cgi?id=30998 --- Comment #2 from Bruno Haible <bruno at clisp dot org> --- Created attachment 15197 --> https://sourceware.org/bugzilla/attachment.cgi?id=15197&action=edit proposed fix Find attached a proposed fix. The bug is obviously in glibc/sysdeps/alpha/fpu/fsetexcptflg.c . The line tmp = (tmp & ~SWCR_STATUS_MASK) | (*flagp & excepts & SWCR_STATUS_MASK); needs to be changed to tmp = (tmp & ~(excepts & SWCR_STATUS_MASK)) | (*flagp & excepts & SWCR_STATUS_MASK); A optimized expression (produces one less instruction when compiled by "alpha-linux-gnu-gcc -O2") is: tmp ^= (tmp ^ *flagp) & excepts & SWCR_STATUS_MASK; -- You are receiving this mail because: You are on the CC list for the bug.
next prev parent reply other threads:[~2023-10-24 18:24 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-10-24 18:19 [Bug math/30998] New: " bruno at clisp dot org 2023-10-24 18:20 ` [Bug math/30998] " bruno at clisp dot org 2023-10-24 18:20 ` bruno at clisp dot org 2023-10-24 18:24 ` bruno at clisp dot org [this message] 2023-12-19 18:39 ` adhemerval.zanella at linaro dot org
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