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authorJoseph Myers <joseph@codesourcery.com>2015-10-09 00:32:14 +0000
committerJoseph Myers <joseph@codesourcery.com>2015-10-09 00:32:14 +0000
commit0e069029a8bb132876d315242054a312ae106852 (patch)
tree3afba08492052af6c50456621e0aba3323bccc29 /sysdeps/i386/configure
parentd0d286d32dda654f8983e8fe77bca0a2cda2051b (diff)
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Fix dbl-64 lrint for 64-bit long (bug 19095).
The dbl-64 implementation of lrint produces incorrect results for some
arguments with 64-bit long because a 32-bit (unsigned) low part of the
mantissa is shifted left, losing high bits in the process.  This patch
fixes this by casting to long int before shifting, as in lround (as
this case only applies for 64-bit long, there are no issues with
sign-extension).

Tested for mips64 (n64).

	[BZ #19095]
	* sysdeps/ieee754/dbl-64/s_lrint.c (__lrint): Cast low part of
	mantissa to long int before shifting left.
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