| 1 | # ulonglong.m4 serial 2 (fileutils-4.0.32, gettext-0.10.40) |
| 2 | dnl Copyright (C) 1999-2002 Free Software Foundation, Inc. |
| 3 | dnl This file is free software, distributed under the terms of the GNU |
| 4 | dnl General Public License. As a special exception to the GNU General |
| 5 | dnl Public License, this file may be distributed as part of a program |
| 6 | dnl that contains a configuration script generated by Autoconf, under |
| 7 | dnl the same distribution terms as the rest of that program. |
| 8 | |
| 9 | dnl From Paul Eggert. |
| 10 | |
| 11 | AC_DEFUN([jm_AC_TYPE_UNSIGNED_LONG_LONG], |
| 12 | [ |
| 13 | AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long, |
| 14 | [AC_TRY_LINK([unsigned long long ull = 1; int i = 63;], |
| 15 | [unsigned long long ullmax = (unsigned long long) -1; |
| 16 | return ull << i | ull >> i | ullmax / ull | ullmax % ull;], |
| 17 | ac_cv_type_unsigned_long_long=yes, |
| 18 | ac_cv_type_unsigned_long_long=no)]) |
| 19 | if test $ac_cv_type_unsigned_long_long = yes; then |
| 20 | AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1, |
| 21 | [Define if you have the unsigned long long type.]) |
| 22 | fi |
| 23 | ]) |