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| author | Jim Meyering <jim@meyering.net> | 2001-08-18 15:55:38 +0000 |
|---|---|---|
| committer | Jim Meyering <jim@meyering.net> | 2001-08-18 15:55:38 +0000 |
| commit | 1443d5fffa9dfadf7774fa4641da816445d594ad (patch) | |
| tree | 792f3a3df846f55dc6616a1f5e1099896356c635 /m4/longlong.m4 | |
| parent | 24844c63327835b85c421d78402eb1655b6832d6 (diff) | |
| download | coreutils-1443d5fffa9dfadf7774fa4641da816445d594ad.tar.xz | |
(jm_AC_TYPE_LONG_LONG): New macro.
Diffstat (limited to 'm4/longlong.m4')
| -rw-r--r-- | m4/longlong.m4 | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/m4/longlong.m4 b/m4/longlong.m4 index 44f7ce360..daa95c075 100644 --- a/m4/longlong.m4 +++ b/m4/longlong.m4 @@ -1,7 +1,25 @@ -#serial 3 +#serial 2 dnl From Paul Eggert. +# Define HAVE_LONG_LONG if 'long long' works. + +AC_DEFUN([jm_AC_TYPE_LONG_LONG], +[ + AC_CACHE_CHECK([for long long], ac_cv_type_long_long, + [AC_TRY_LINK([long long ll = 1; int i = 63;], + [long long llmax = (long long) -1; + return ll << i | ll >> i | llmax / ll | llmax % ll;], + ac_cv_type_long_long=yes, + ac_cv_type_long_long=no)]) + if test $ac_cv_type_long_long = yes; then + AC_DEFINE(HAVE_LONG_LONG, 1, + [Define if you have the long long type.]) + fi +]) + +# Define HAVE_UNSIGNED_LONG_LONG if 'unsigned long long' works. + AC_DEFUN([jm_AC_TYPE_UNSIGNED_LONG_LONG], [ AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long, |