dnl Copyright (C) 1993-2002 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.

dnl From Bruno Haible, Marcus Daniels.

AC_PREREQ(2.13)

AC_DEFUN([CL_LONGDOUBLE],
[AC_CACHE_CHECK(for long double type, cl_cv_c_longdouble, [
AC_TRY_RUN([int main()
{ long double x = 2.7182818284590452354L; x = x*x; exit (x==0.0L); }],
cl_cv_c_longdouble=yes, cl_cv_c_longdouble=no,
dnl When cross-compiling, don't assume anything.
cl_cv_c_longdouble="guessing no")
])
case "$cl_cv_c_longdouble" in
  *yes) AC_DEFINE(HAVE_LONGDOUBLE) ;;
  *no) ;;
esac
])
