From: Bruno Haible <bruno@clisp.org>
Date: Sun, 25 Mar 2007 01:11:49 +0000 (+0000)
Subject: Correct bitwise comparison of 'long double' numbers.
X-Git-Tag: cvs-readonly~689
X-Git-Url: http://erislabs.org.uk/gitweb/?a=commitdiff_plain;h=555acda4637f118f03f674071b8199eac1e9e0f2;p=gnulib.git

Correct bitwise comparison of 'long double' numbers.
---

diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
index bc80b444a..00419aaaa 100644
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@@ -51,6 +51,7 @@
 #include "xsize.h"
 
 #if NEED_PRINTF_DIRECTIVE_A && !defined IN_LIBINTL
+# include "float+.h"
 # include "isnan.h"
 # include "printf-frexp.h"
 # if HAVE_LONG_DOUBLE
@@ -424,10 +425,8 @@ VASNPRINTF (CHAR_T *resultbuf, size_t *lengthp, const CHAR_T *format, va_list ar
 			  {
 			    /* Distinguish 0.0L and -0.0L.  */
 			    static long double plus_zero = 0.0L;
-			    long double arg_mem;
-			    memset (&arg_mem, 0, sizeof (long double));
-			    arg_mem = arg;
-			    if (memcmp (&plus_zero, &arg_mem, sizeof (long double)) != 0)
+			    long double arg_mem = arg;
+			    if (memcmp (&plus_zero, &arg_mem, SIZEOF_LDBL) != 0)
 			      {
 				sign = -1;
 				arg = -arg;
@@ -574,10 +573,8 @@ VASNPRINTF (CHAR_T *resultbuf, size_t *lengthp, const CHAR_T *format, va_list ar
 			  {
 			    /* Distinguish 0.0 and -0.0.  */
 			    static double plus_zero = 0.0;
-			    double arg_mem;
-			    memset (&arg_mem, 0, sizeof (double));
-			    arg_mem = arg;
-			    if (memcmp (&plus_zero, &arg_mem, sizeof (double)) != 0)
+			    double arg_mem = arg;
+			    if (memcmp (&plus_zero, &arg_mem, SIZEOF_DBL) != 0)
 			      {
 				sign = -1;
 				arg = -arg;