Return to longlong.m4 CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / confuse / m4

Annotation of embedaddon/confuse/m4/longlong.m4, revision 1.1

1.1     ! misho       1: # longlong.m4 serial 8
        !             2: dnl Copyright (C) 1999-2006 Free Software Foundation, Inc.
        !             3: dnl This file is free software; the Free Software Foundation
        !             4: dnl gives unlimited permission to copy and/or distribute it,
        !             5: dnl with or without modifications, as long as this notice is preserved.
        !             6: 
        !             7: dnl 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: 
        !            17: AC_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 $ac_cv_type_long_long_int = yes; then
        !            34:     AC_DEFINE([HAVE_LONG_LONG_INT], 1,
        !            35:       [Define to 1 if the system has the type `long long int'.])
        !            36:   fi
        !            37: ])
        !            38: 
        !            39: # This macro is obsolescent and should go away soon.
        !            40: AC_DEFUN([gl_AC_TYPE_LONG_LONG],
        !            41: [
        !            42:   AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
        !            43:   ac_cv_type_long_long=$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: ])