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let log(<0) return NaN rather than -inf in POSIX/XOPEN modes, as

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requested in PR lib/41931 by Havard Eidnes (the PR refers to POSIX,
the OSF/1 manpage suggests that XOPEN should behave that way too)
being here, do the same to log10 and log2
This commit is contained in:
drochner 2011-04-11 15:17:33 +00:00
parent 2ac5d52245
commit 997b81175f
1 changed files with 4 additions and 4 deletions
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8
lib/libm/src/k_standard.c
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@ -12,7 +12,7 @@
#include <sys/cdefs.h>
#if defined(LIBM_SCCS) && !defined(lint)
__RCSID("$NetBSD: k_standard.c,v 1.16 2010/09/01 10:44:28 drochner Exp $");
__RCSID("$NetBSD: k_standard.c,v 1.17 2011/04/11 15:17:33 drochner Exp $");
#endif
#include "math.h"
@ -370,7 +370,7 @@ __kernel_standard(double x, double y, int type)
if (_LIB_VERSION == _SVID_)
exc.retval = -HUGE;
else
exc.retval = -HUGE_VAL;
exc.retval = zero/zero;
if (_LIB_VERSION == _POSIX_)
errno = EDOM;
else if (!matherr(&exc)) {
@ -406,7 +406,7 @@ __kernel_standard(double x, double y, int type)
if (_LIB_VERSION == _SVID_)
exc.retval = -HUGE;
else
exc.retval = -HUGE_VAL;
exc.retval = zero/zero;
if (_LIB_VERSION == _POSIX_)
errno = EDOM;
else if (!matherr(&exc)) {
@ -800,7 +800,7 @@ __kernel_standard(double x, double y, int type)
if (_LIB_VERSION == _SVID_)
exc.retval = -HUGE;
else
exc.retval = -HUGE_VAL;
exc.retval = zero/zero;
if (_LIB_VERSION == _POSIX_)
errno = EDOM;
else if (!matherr(&exc)) {