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authorJoseph Myers <joseph@codesourcery.com>2015-10-07 00:40:12 +0000
committerJoseph Myers <joseph@codesourcery.com>2015-10-07 00:40:12 +0000
commitb75bc69cdfe5247b2156ce249518f1c1df4d797d (patch)
tree7cbc51c7f8a7954e5394fcd873f42f7abeaa22df /sysdeps/sh/sh4
parenta68dec3b03b9c163ad79192cbe837208b2f90de1 (diff)
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Don't use dbl-64/wordsize-64 lround based on llround for ILP32 (bug 19079).
The implementation of lround in dbl-64/wordsize-64 as an alias or
wrapper for llround is always incorrect when long is not 64-bit,
because it misses required exceptions in overflow cases, as shown by
my recently added tests.  This patch removes that alias / wrapper in
the non-LP64 case, together with the REGISTER_CAST_INT32_TO_INT64
macro, restoring the previous version of lround for dbl-64/wordsize-64
(newly conditioned on !_LP64).

Tested for x86_64, and for mips64 with use of dbl-64/wordsize-64
enabled.

	[BZ #19079]
	* sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: Restore previous
	file, conditioned on [!_LP64].
	* sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c
	[!_LP64] (__lround): Do not define as function or alias.
	[!_LP64] (lround): Likewise.
	[!_LP64] (__lroundl): Likewise.
	[!_LP64] (lroundl): Likewise.
	* sysdeps/tile/sysdep.h (REGISTER_CAST_INT32_TO_INT64): Remove
	macro.
	* sysdeps/x86_64/x32/sysdep.h (REGISTER_CAST_INT32_TO_INT64):
	Likewise.
Diffstat (limited to 'sysdeps/sh/sh4')
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