[PATCH] i386: Simplify powl computation for small integral y [BZ #33586]

[H.J. Lu]

On i386, tests added by

commit 1b657c53c21a100082b0855392e4cb40c9c43a87
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date:   Fri Oct 10 20:21:13 2025 -0400

    Simplify powl computation for small integral y [BZ #33411]

exposed the same bug in i386 e_powl.S:

FAIL: math/test-float64x-pow
original exit status 1
testing _Float64x (without inline functions)
Failure: pow (0x1p+8192, 0x1p+0): Exception "Overflow" set
Failure: pow_downward (0x1p+8192, 0x1p+0): Exception "Overflow" set
Failure: pow_towardzero (0x1p+8192, 0x1p+0): Exception "Overflow" set
Failure: pow_upward (0x1p+8192, 0x1p+0): Exception "Overflow" set

FAIL: math/test-ldouble-pow
original exit status 1
testing long double (without inline functions)
Failure: pow (0x1p+8192, 0x1p+0): Exception "Overflow" set
Failure: pow_downward (0x1p+8192, 0x1p+0): Exception "Overflow" set
Failure: pow_towardzero (0x1p+8192, 0x1p+0): Exception "Overflow" set
Failure: pow_upward (0x1p+8192, 0x1p+0): Exception "Overflow" set

Port x86-64 e_powl.S fix to i386 e_powl.S.  This fixes BZ #33586.

OK for master?

Thanks.

-- 
H.J.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-i386-Simplify-powl-computation-for-small-integral-y-.patch
Type: text/x-patch
Size: 2904 bytes
Desc: not available
URL: <https://sourceware.org/pipermail/libc-alpha/attachments/20251102/7a61ba0a/attachment.bin>