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-rw-r--r--m4/longlong.m4124
1 files changed, 45 insertions, 79 deletions
diff --git a/m4/longlong.m4 b/m4/longlong.m4
index cca3c1a..1f9e862 100644
--- a/m4/longlong.m4
+++ b/m4/longlong.m4
@@ -1,5 +1,5 @@
-# longlong.m4 serial 14
-dnl Copyright (C) 1999-2007, 2009-2010 Free Software Foundation, Inc.
+# longlong.m4 serial 10
+dnl Copyright (C) 1999-2006 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.
@@ -7,8 +7,8 @@ dnl with or without modifications, as long as this notice is preserved.
dnl From Paul Eggert.
# Define HAVE_LONG_LONG_INT if 'long long int' works.
-# This fixes a bug in Autoconf 2.61, but can be removed once we
-# assume 2.62 everywhere.
+# This fixes a bug in Autoconf 2.60, but can be removed once we
+# assume 2.61 everywhere.
# Note: If the type 'long long int' exists but is only 32 bits large
# (as on some very old compilers), HAVE_LONG_LONG_INT will not be
@@ -18,89 +18,55 @@ AC_DEFUN([AC_TYPE_LONG_LONG_INT],
[
AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int],
[AC_LINK_IFELSE(
- [_AC_TYPE_LONG_LONG_SNIPPET],
+ [AC_LANG_PROGRAM(
+ [[long long int ll = 9223372036854775807ll;
+ long long int nll = -9223372036854775807LL;
+ typedef int a[((-9223372036854775807LL < 0
+ && 0 < 9223372036854775807ll)
+ ? 1 : -1)];
+ int i = 63;]],
+ [[long long int llmax = 9223372036854775807ll;
+ return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)
+ | (llmax / ll) | (llmax % ll));]])],
[dnl This catches a bug in Tandem NonStop Kernel (OSS) cc -O circa 2004.
- dnl If cross compiling, assume the bug isn't important, since
- dnl nobody cross compiles for this platform as far as we know.
+ dnl If cross compiling, assume the bug isn't important, since
+ dnl nobody cross compiles for this platform as far as we know.
AC_RUN_IFELSE(
- [AC_LANG_PROGRAM(
- [[@%:@include <limits.h>
- @%:@ifndef LLONG_MAX
- @%:@ define HALF \
- (1LL << (sizeof (long long int) * CHAR_BIT - 2))
- @%:@ define LLONG_MAX (HALF - 1 + HALF)
- @%:@endif]],
- [[long long int n = 1;
- int i;
- for (i = 0; ; i++)
- {
- long long int m = n << i;
- if (m >> i != n)
- return 1;
- if (LLONG_MAX / 2 < m)
- break;
- }
- return 0;]])],
- [ac_cv_type_long_long_int=yes],
- [ac_cv_type_long_long_int=no],
- [ac_cv_type_long_long_int=yes])],
+ [AC_LANG_PROGRAM(
+ [[@%:@include <limits.h>
+ @%:@ifndef LLONG_MAX
+ @%:@ define HALF \
+ (1LL << (sizeof (long long int) * CHAR_BIT - 2))
+ @%:@ define LLONG_MAX (HALF - 1 + HALF)
+ @%:@endif]],
+ [[long long int n = 1;
+ int i;
+ for (i = 0; ; i++)
+ {
+ long long int m = n << i;
+ if (m >> i != n)
+ return 1;
+ if (LLONG_MAX / 2 < m)
+ break;
+ }
+ return 0;]])],
+ [ac_cv_type_long_long_int=yes],
+ [ac_cv_type_long_long_int=no],
+ [ac_cv_type_long_long_int=yes])],
[ac_cv_type_long_long_int=no])])
if test $ac_cv_type_long_long_int = yes; then
- AC_DEFINE([HAVE_LONG_LONG_INT], [1],
+ AC_DEFINE([HAVE_LONG_LONG_INT], 1,
[Define to 1 if the system has the type `long long int'.])
fi
])
-# Define HAVE_UNSIGNED_LONG_LONG_INT if 'unsigned long long int' works.
-# This fixes a bug in Autoconf 2.61, but can be removed once we
-# assume 2.62 everywhere.
-
-# 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],
+# This macro is obsolescent and should go away soon.
+AC_DEFUN([gl_AC_TYPE_LONG_LONG],
[
- AC_CACHE_CHECK([for unsigned long long int],
- [ac_cv_type_unsigned_long_long_int],
- [AC_LINK_IFELSE(
- [_AC_TYPE_LONG_LONG_SNIPPET],
- [ac_cv_type_unsigned_long_long_int=yes],
- [ac_cv_type_unsigned_long_long_int=no])])
- if test $ac_cv_type_unsigned_long_long_int = yes; then
- AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1],
- [Define to 1 if the system has the type `unsigned long long int'.])
+ AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
+ ac_cv_type_long_long=$ac_cv_type_long_long_int
+ if test $ac_cv_type_long_long = yes; then
+ AC_DEFINE(HAVE_LONG_LONG, 1,
+ [Define if you have the 'long long' type.])
fi
])
-
-# Expands to a C program that can be used to test for simultaneous support
-# of 'long long' and 'unsigned long long'. We don't want to say that
-# 'long long' is available if 'unsigned long long' is not, or vice versa,
-# because too many programs rely on the symmetry between signed and unsigned
-# integer types (excluding 'bool').
-AC_DEFUN([_AC_TYPE_LONG_LONG_SNIPPET],
-[
- AC_LANG_PROGRAM(
- [[/* For now, do not test the preprocessor; as of 2007 there are too many
- implementations with broken preprocessors. Perhaps this can
- be revisited in 2012. In the meantime, code should not expect
- #if to work with literals wider than 32 bits. */
- /* Test literals. */
- long long int ll = 9223372036854775807ll;
- long long int nll = -9223372036854775807LL;
- unsigned long long int ull = 18446744073709551615ULL;
- /* Test constant expressions. */
- typedef int a[((-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)
- ? 1 : -1)];
- typedef int b[(18446744073709551615ULL <= (unsigned long long int) -1
- ? 1 : -1)];
- int i = 63;]],
- [[/* Test availability of runtime routines for shift and division. */
- long long int llmax = 9223372036854775807ll;
- unsigned long long int ullmax = 18446744073709551615ull;
- return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)
- | (llmax / ll) | (llmax % ll)
- | (ull << 63) | (ull >> 63) | (ull << i) | (ull >> i)
- | (ullmax / ull) | (ullmax % ull));]])
-])
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