1# longlong.m4 serial 8 2dnl Copyright (C) 1999-2006 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl From Paul Eggert. 8 9# Define HAVE_LONG_LONG_INT if 'long long int' works. 10# This fixes a bug in Autoconf 2.60, but can be removed once we 11# assume 2.61 everywhere. 12 13# Note: If the type 'long long int' exists but is only 32 bits large 14# (as on some very old compilers), AC_TYPE_LONG_LONG_INT will not be 15# defined. In this case you can treat 'long long int' like 'long int'. 16 17AC_DEFUN([AC_TYPE_LONG_LONG_INT], 18[ 19 AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int], 20 [AC_LINK_IFELSE( 21 [AC_LANG_PROGRAM( 22 [[long long int ll = 9223372036854775807ll; 23 long long int nll = -9223372036854775807LL; 24 typedef int a[((-9223372036854775807LL < 0 25 && 0 < 9223372036854775807ll) 26 ? 1 : -1)]; 27 int i = 63;]], 28 [[long long int llmax = 9223372036854775807ll; 29 return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i) 30 | (llmax / ll) | (llmax % ll));]])], 31 [ac_cv_type_long_long_int=yes], 32 [ac_cv_type_long_long_int=no])]) 33 if test $ac_cv_type_long_long_int = yes; then 34 AC_DEFINE([HAVE_LONG_LONG_INT], 1, 35 [Define to 1 if the system has the type `long long int'.]) 36 fi 37]) 38 39# This macro is obsolescent and should go away soon. 40AC_DEFUN([gl_AC_TYPE_LONG_LONG], 41[ 42 AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) 43 ac_cv_type_long_long=$ac_cv_type_long_long_int 44 if test $ac_cv_type_long_long = yes; then 45 AC_DEFINE(HAVE_LONG_LONG, 1, 46 [Define if you have the 'long long' type.]) 47 fi 48]) 49