1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
# ulonglong.m4 serial 7
dnl Copyright (C) 1999-2007 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_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],
[
AC_CACHE_CHECK([for unsigned long long int],
[ac_cv_type_unsigned_long_long_int],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#if ! (18446744073709551615ULL <= -1u)
error in preprocessor;
#endif
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 $ac_cv_type_unsigned_long_long_int = yes; then
AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], 1,
[Define to 1 if the system has the type `unsigned long long int'.])
fi
])
# This macro is obsolescent and should go away soon.
AC_DEFUN([gl_AC_TYPE_UNSIGNED_LONG_LONG],
[
AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
ac_cv_type_unsigned_long_long=$ac_cv_type_unsigned_long_long_int
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
])
|
