kc3-lang/automake/m4/strtod.m4

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• Hash : 0922e6c7
  Author :
  Date : 1999-03-11T22:56:16
  

  	* m4/error.m4, m4/mktime.m4, m4/obstack.m4, m4/regex.m4,
  	m4/strtod.m4: Use $ac_objext, not `.o'.  From Jim Meyering.
  

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• m4/strtod.m4

• ## 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.$ac_objext} 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.$ac_objext"
  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)])
    fi
  fi
  ])
  

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