Annotation 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 | niro | 153 | # 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 | ]) |