Imported Upstream version 1.4.17

[platform/upstream/m4.git] / lib / strtod.c

diff --git a/lib/strtod.c b/lib/strtod.c
index bf6955a..76e37d6 100644 (file)
--- a/lib/strtod.c
+++ b/lib/strtod.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-1992, 1997, 1999, 2003, 2006, 2008-2011 Free Software
+/* Copyright (C) 1991-1992, 1997, 1999, 2003, 2006, 2008-2013 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
@@ -31,9 +31,6 @@
 #ifndef HAVE_LDEXP_IN_LIBC
 #define HAVE_LDEXP_IN_LIBC 0
 #endif
-#ifndef HAVE_RAW_DECL_STRTOD
-#define HAVE_RAW_DECL_STRTOD 0
-#endif
 
 /* Return true if C is a space in the current locale, avoiding
    problems with signed char and isspace.  */
@@ -149,7 +146,7 @@ parse_number (const char *nptr,
       else
         {
           /* The value of the digit doesn't matter, since we have already
-             gotten as many digits as can be represented in a `double'.
+             gotten as many digits as can be represented in a 'double'.
              This doesn't necessarily mean the result will overflow.
              The exponent may reduce it to within range.
 
@@ -193,7 +190,7 @@ static double underlying_strtod (const char *, char **);
 /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
    ICC 10.0 has a bug when optimizing the expression -zero.
    The expression -DBL_MIN * DBL_MIN does not work when cross-compiling
-   to PowerPC on MacOS X 10.5.  */
+   to PowerPC on Mac OS X 10.5.  */
 #if defined __hpux || defined __sgi || defined __ICC
 static double
 compute_minus_zero (void)
@@ -344,24 +341,11 @@ strtod (const char *nptr, char **endptr)
   return negative ? -num : num;
 }
 
-/* The "underlying" strtod implementation.  This must be defined
+/* The underlying strtod implementation.  This must be defined
    after strtod because it #undefs strtod.  */
 static double
 underlying_strtod (const char *nptr, char **endptr)
 {
-  if (HAVE_RAW_DECL_STRTOD)
-    {
-      /* Prefer the native strtod if available.  Usually it should
-         work and it should give more-accurate results than our
-         approximation.  */
-      #undef strtod
-      return strtod (nptr, endptr);
-    }
-  else
-    {
-      /* Approximate strtod well enough for this module.  There's no
-         need to handle anything but finite unsigned decimal
-         numbers with nonnull ENDPTR.  */
-      return parse_number (nptr, 10, 10, 1, 'e', endptr);
-    }
+#undef strtod
+  return strtod (nptr, endptr);
 }