blob: 44f7ce360325e5ef8644e267538ab6f9ec0e1a68 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
#serial 3
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
])
|
