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From: Tulio Magno Quites Machado Filho <tuliom@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc] Fix BZ #29463 in the ibm128 implementation of y1l too Date: Mon, 24 Oct 2022 14:00:33 +0000 (GMT) [thread overview] Message-ID: <20221024140036.CE4D9385840C@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b6e37b7805b0182c3e25cdab39ebf5f001c04d05 commit b6e37b7805b0182c3e25cdab39ebf5f001c04d05 Author: Michael Hudson-Doyle <michael.hudson@canonical.com> Date: Mon Aug 22 14:05:04 2022 +1200 Fix BZ #29463 in the ibm128 implementation of y1l too Avoid moving code across SET_RESTORE_ROUNDL in order to fix [BZ #29463]. Tested-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> Diff: --- sysdeps/ieee754/ldbl-128ibm/e_j1l.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sysdeps/ieee754/ldbl-128ibm/e_j1l.c b/sysdeps/ieee754/ldbl-128ibm/e_j1l.c index f85ba94466..0a5fe68342 100644 --- a/sysdeps/ieee754/ldbl-128ibm/e_j1l.c +++ b/sysdeps/ieee754/ldbl-128ibm/e_j1l.c @@ -792,10 +792,13 @@ __ieee754_y1l (long double x) { /* 0 <= x <= 2 */ SET_RESTORE_ROUNDL (FE_TONEAREST); + xx = math_opt_barrier (xx); + x = math_opt_barrier (x); z = xx * xx; p = xx * neval (z, Y0_2N, NY0_2N) / deval (z, Y0_2D, NY0_2D); p = -TWOOPI / xx + p; p = TWOOPI * __ieee754_logl (x) * __ieee754_j1l (x) + p; + math_force_eval (p); return p; }
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