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Date:      Sat, 12 Jun 2010 17:32:05 +0000 (UTC)
From:      David Schultz <das@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r209110 - in head/lib/msun: . src
Message-ID:  <201006121732.o5CHW5Cs065722@svn.freebsd.org>
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Author: das
Date: Sat Jun 12 17:32:05 2010
New Revision: 209110
URL: http://svn.freebsd.org/changeset/base/209110

Log:
  Introduce __isnanf() as an alias for isnanf(), and make the isnan()
  macro expand to __isnanf() instead of isnanf() for float arguments.
  This change is needed because isnanf() isn't declared in strict POSIX
  or C99 mode.
  
  Compatibility note: Apps using isnan(float) that are compiled after
  this change won't link against an older libm.
  
  Reported by:	Florian Forster <octo@verplant.org>

Modified:
  head/lib/msun/Symbol.map
  head/lib/msun/src/math.h
  head/lib/msun/src/s_isnan.c

Modified: head/lib/msun/Symbol.map
==============================================================================
--- head/lib/msun/Symbol.map	Sat Jun 12 16:04:29 2010	(r209109)
+++ head/lib/msun/Symbol.map	Sat Jun 12 17:32:05 2010	(r209110)
@@ -218,3 +218,8 @@ FBSD_1.1 {
 	cprojf;
 	cprojl;
 };
+
+/* First added in 9.0-CURRENT */
+FBSD_1.2 {
+	__isnanf;
+};

Modified: head/lib/msun/src/math.h
==============================================================================
--- head/lib/msun/src/math.h	Sat Jun 12 16:04:29 2010	(r209109)
+++ head/lib/msun/src/math.h	Sat Jun 12 17:32:05 2010	(r209110)
@@ -97,7 +97,7 @@ extern const union __nan_un {
     : (sizeof (x) == sizeof (double)) ? isinf(x)	\
     : __isinfl(x))
 #define	isnan(x)					\
-    ((sizeof (x) == sizeof (float)) ? isnanf(x)		\
+    ((sizeof (x) == sizeof (float)) ? __isnanf(x)	\
     : (sizeof (x) == sizeof (double)) ? isnan(x)	\
     : __isnanl(x))
 #define	isnormal(x)					\
@@ -179,6 +179,7 @@ int	__isfinite(double) __pure2;
 int	__isfinitel(long double) __pure2;
 int	__isinff(float) __pure2;
 int	__isinfl(long double) __pure2;
+int	__isnanf(float) __pure2;
 int	__isnanl(long double) __pure2;
 int	__isnormalf(float) __pure2;
 int	__isnormal(double) __pure2;

Modified: head/lib/msun/src/s_isnan.c
==============================================================================
--- head/lib/msun/src/s_isnan.c	Sat Jun 12 16:04:29 2010	(r209109)
+++ head/lib/msun/src/s_isnan.c	Sat Jun 12 17:32:05 2010	(r209110)
@@ -43,7 +43,7 @@ isnan(double d)
 #endif
 
 int
-isnanf(float f)
+__isnanf(float f)
 {
 	union IEEEf2bits u;
 
@@ -60,3 +60,5 @@ __isnanl(long double e)
 	mask_nbit_l(u);
 	return (u.bits.exp == 32767 && (u.bits.manl != 0 || u.bits.manh != 0));
 }
+
+__weak_reference(__isnanf, isnanf);

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