Correct SunOS and Solaris version number notation to match Sun's usage.

[gnulib.git] / m4 / strtod.m4

diff --git a/m4/strtod.m4 b/m4/strtod.m4
index 8aaf4b7..809a83f 100644 (file)
--- a/m4/strtod.m4
+++ b/m4/strtod.m4
@@ -1,69 +1,25 @@
-## Copyright (C) 1996 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
-## the Free Software Foundation; either version 2, or (at your option)
-## any later version.
-
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## 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., 59 Temple Place - Suite 330, Boston, MA
-## 02111-1307, USA.
-
-## From Jim Meyering.
-
-## serial 1
-
-## @defmac AC_FUNC_STRTOD
-## @maindex FUNC_STRTOD
-## @ovindex LIBOBJS
-## If the @code{strtod} function is not available, or does not work
-## correctly (like the one on SunOS 5.4), add @samp{strtod.o} to output
-## variable @code{LIBOBJS}.
-## @end defmac
-
-AC_DEFUN(AM_FUNC_STRTOD,
-[AC_CACHE_CHECK(for working strtod, am_cv_func_strtod,
-[AC_TRY_RUN([
-double strtod ();
-int
-main()
-{
-  {
-    /* Some versions of Linux strtod mis-parse strings with leading '+'.  */
-    char *string = " +69";
-    char *term;
-    double value;
-    value = strtod (string, &term);
-    if (value != 69 || term != (string + 4))
-      exit (1);
-  }
-
-  {
-    /* Under Solaris 2.4, strtod returns the wrong value for the
-       terminating character under some conditions.  */
-    char *string = "NaN";
-    char *term;
-    strtod (string, &term);
-    if (term != string && *(term - 1) == 0)
-      exit (1);
-  }
-  exit (0);
-}
-], am_cv_func_strtod=yes, am_cv_func_strtod=no, am_cv_func_strtod=no)])
-test $am_cv_func_strtod = no && LIBOBJS="$LIBOBJS strtod.o"
-AC_SUBST(LIBOBJS)dnl
-am_cv_func_strtod_needs_libm=no
-if test $am_cv_func_strtod = no; then
-  AC_CHECK_FUNCS(pow)
-  if test $ac_cv_func_pow = no; then
-    AC_CHECK_LIB(m, pow, [am_cv_func_strtod_needs_libm=yes],
-                [AC_MSG_WARN(can't find library containing definition of pow)])
+# strtod.m4 serial 2
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRTOD],
+[
+  AC_REQUIRE([AC_FUNC_STRTOD])
+  if test $ac_cv_func_strtod = no; then
+    AC_DEFINE(strtod, rpl_strtod,
+      [Define to rpl_strtod if the replacement function should be used.])
+    gl_PREREQ_STRTOD
   fi
-fi
+])
+
+# Prerequisites of lib/strtod.c.
+# The need for pow() is already handled by AC_FUNC_STRTOD.
+AC_DEFUN([gl_PREREQ_STRTOD], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS(float.h)
+  AC_CHECK_FUNCS_ONCE(isascii)
 ])