File: ulonglong.m4

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# ulonglong.m4 serial 2 (fileutils-4.0.32, gettext-0.10.40)
dnl Copyright (C) 1999-2002 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 Paul Eggert.

AC_DEFUN([jm_AC_TYPE_UNSIGNED_LONG_LONG],
[
  AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long,
  [AC_TRY_LINK([unsigned long long ull = 1; int i = 63;],
    [unsigned long long ullmax = (unsigned long long) -1;
     return ull << i | ull >> i | ullmax / ull | ullmax % ull;],
    ac_cv_type_unsigned_long_long=yes,
    ac_cv_type_unsigned_long_long=no)])
  if test $ac_cv_type_unsigned_long_long = yes; then
    AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1,
      [Define if you have the unsigned long long type.])
  fi
])