ulonglong.m4
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	# ulonglong.m4 serial 4
	dnl Copyright (C) 1999-2004 Free Software Foundation, Inc.
	dnl This file is free software; the Free Software Foundation
	dnl gives unlimited permission to copy and/or distribute it,
	dnl with or without modifications, as long as this notice is preserved.

	dnl From Paul Eggert.

	# Define HAVE_UNSIGNED_LONG_LONG if 'unsigned long long' works.

	AC_DEFUN([gl_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 = 1ULL; 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
	])