+# Note: If the type 'unsigned long long int' exists but is only 32 bits
+# large (as on some very old compilers), AC_TYPE_UNSIGNED_LONG_LONG_INT
+# will not be defined. In this case you can treat 'unsigned long long int'
+# like 'unsigned long int'.
+
+AC_DEFUN([AC_TYPE_UNSIGNED_LONG_LONG_INT],
+[
+ AC_CACHE_CHECK([for unsigned long long int],
+ [ac_cv_type_unsigned_long_long_int],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[unsigned long long int ull = 18446744073709551615ULL;
+ typedef int a[(18446744073709551615ULL <= (unsigned long long int) -1
+ ? 1 : -1)];
+ int i = 63;]],
+ [[unsigned long long int ullmax = 18446744073709551615ull;
+ return (ull << 63 | ull >> 63 | ull << i | ull >> i
+ | ullmax / ull | ullmax % ull);]])],
+ [ac_cv_type_unsigned_long_long_int=yes],
+ [ac_cv_type_unsigned_long_long_int=no])])
+ if test $ac_cv_type_unsigned_long_long_int = yes; then
+ AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], 1,
+ [Define to 1 if the system has the type `unsigned long long int'.])
+ fi
+])
+
+# This macro is obsolescent and should go away soon.
+AC_DEFUN([gl_AC_TYPE_UNSIGNED_LONG_LONG],