Contents of /trunk/xmms/gentoo-m4/ulonglong.m4
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Tue May 8 20:52:56 2007 UTC (17 years, 4 months ago) by niro
File size: 1058 byte(s)
Tue May 8 20:52:56 2007 UTC (17 years, 4 months ago) by niro
File size: 1058 byte(s)
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1 | # ulonglong.m4 serial 3 |
2 | dnl Copyright (C) 1999-2003 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 | # Define HAVE_UNSIGNED_LONG_LONG if 'unsigned long long' works. |
12 | |
13 | AC_DEFUN([jm_AC_TYPE_UNSIGNED_LONG_LONG], |
14 | [ |
15 | AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long, |
16 | [AC_TRY_LINK([unsigned long long ull = 1ULL; int i = 63;], |
17 | [unsigned long long ullmax = (unsigned long long) -1; |
18 | return ull << i | ull >> i | ullmax / ull | ullmax % ull;], |
19 | ac_cv_type_unsigned_long_long=yes, |
20 | ac_cv_type_unsigned_long_long=no)]) |
21 | if test $ac_cv_type_unsigned_long_long = yes; then |
22 | AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1, |
23 | [Define if you have the 'unsigned long long' type.]) |
24 | fi |
25 | ]) |