From: Aurelien Jarno <aurelien@aurel32.net>
To: libc-stable@sourceware.org
Cc: Michael Hudson-Doyle <michael.hudson@canonical.com>,
Aurelien Jarno <aurelien@aurel32.net>,
Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Subject: [COMMITTED 2.36] Fix BZ #29463 in the ibm128 implementation of y1l too
Date: Mon, 24 Oct 2022 20:57:17 +0200 [thread overview]
Message-ID: <20221024185717.1738882-1-aurelien@aurel32.net> (raw)
From: Michael Hudson-Doyle <michael.hudson@canonical.com>
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>
(cherry picked from commit b6e37b7805b0182c3e25cdab39ebf5f001c04d05)
---
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;
}
--
2.35.1
reply other threads:[~2022-10-24 18:57 UTC|newest]
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