glibc

History

Joseph Myers 01189b083b Fix i386/x86_64 log* (1) zero sign for -ffinite-math-only (bug 19213).

For the -ffinite-math-only versions of various x86_64 and x86 log*
functions, a zero result from log* (1) is returned with incorrect sign
in round-downward mode.  This patch fixes this in a similar way to the
previous fixes for the non-*_finite versions of the functions.

Tested for x86_64 and x86 (including an i586 build), together with a
patch that will be applied separately to enable the main libm-test.inc
tests for the finite-math-only functions.

	[BZ #19213]
	* sysdeps/i386/fpu/e_log.S (__log_finite): Ensure +0 is always
	returned for argument 1.
	* sysdeps/i386/fpu/e_logf.S (__logf_finite): Likewise.
	* sysdeps/i386/fpu/e_logl.S (__logl_finite): Likewise.
	* sysdeps/i386/i686/fpu/e_logl.S (__logl_finite): Likewise.
	* sysdeps/x86_64/fpu/e_log10l.S (__log10l_finite): Likewise.
	* sysdeps/x86_64/fpu/e_log2l.S (__log2l_finite): Likewise.
	* sysdeps/x86_64/fpu/e_logl.S (__logl_finite): Likewise.

2015-11-05 21:56:31 +00:00

multiarch

Avoid excess range in results from i386 exp, hypot, pow functions (bug 18980).

2015-09-18 21:53:22 +00:00

e_log.S

No need for boundary case handling in x86-32 __ieee_log

2011-10-15 22:21:53 -04:00

e_logf.S

No need for boundary case handling in x86-32 __ieee_logf

2011-10-15 18:09:12 -04:00

e_logl.S

Fix i386/x86_64 log* (1) zero sign for -ffinite-math-only (bug 19213).