* strtod.c (strtod): cast the argument of tolower to unsigned char.

[gnulib.git] / lib / strtod.c

diff --git a/lib/strtod.c b/lib/strtod.c
index 2f6b894..73f01f9 100644 (file)
--- a/lib/strtod.c
+++ b/lib/strtod.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992, 1997, 1999, 2003, 2006 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -11,41 +11,27 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 #ifdef HAVE_CONFIG_H
-#include <config.h>
+# include <config.h>
 #endif
 
 #include <errno.h>
+
 #include <ctype.h>
+
 #include <math.h>
 
-#ifdef HAVE_FLOAT_H
 #include <float.h>
-#else
-#define DBL_MAX 1.7976931348623159e+308
-#define DBL_MIN 2.2250738585072010e-308
-#endif
-
-#if STDC_HEADERS
 #include <stdlib.h>
 #include <string.h>
-#else
-#define NULL 0
-extern int errno;
-#ifndef HUGE_VAL
-#define HUGE_VAL HUGE
-#endif
-#endif
 
 /* Convert NPTR to a double.  If ENDPTR is not NULL, a pointer to the
    character after the last one used in the number is put in *ENDPTR.  */
 double
-strtod (nptr, endptr)
-     const char *nptr;
-     char **endptr;
+strtod (const char *nptr, char **endptr)
 {
   register const char *s;
   short int sign;
@@ -68,7 +54,7 @@ strtod (nptr, endptr)
   s = nptr;
 
   /* Eat whitespace.  */
-  while (isspace (*s))
+  while (isspace ((unsigned char) *s))
     ++s;
 
   /* Get the sign.  */
@@ -82,7 +68,7 @@ strtod (nptr, endptr)
   exponent = 0;
   for (;; ++s)
     {
-      if (isdigit (*s))
+      if ('0' <= *s && *s <= '9')
        {
          got_digit = 1;
 
@@ -115,7 +101,7 @@ strtod (nptr, endptr)
   if (!got_digit)
     goto noconv;
 
-  if (tolower (*s) == 'e')
+  if (tolower ((unsigned char) *s) == 'e')
     {
       /* Get the exponent specified after the `e' or `E'.  */
       int save = errno;