Mercurial > hg > octave-lojdl > gnulib-hg
changeset 3355:867e9fa9a6c3
renamed from ulonglong.m4
| author | Jim Meyering <jim@meyering.net> |
|---|---|
| date | Sat, 18 Aug 2001 15:54:36 +0000 |
| parents | 9c66b69183df |
| children | 8f113648d4ec |
| files | m4/longlong.m4 |
| diffstat | 1 files changed, 17 insertions(+), 0 deletions(-) [+] |
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new file mode 100644 --- /dev/null +++ b/m4/longlong.m4 @@ -0,0 +1,17 @@ +#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 +])