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# strtoimax.m4 serial 13
dnl Copyright (C) 2002-2004, 2006, 2009-2012 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.
AC_DEFUN([gl_FUNC_STRTOIMAX],
[
AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
dnl On OSF/1 5.1 with cc, this function is declared but not defined.
AC_CHECK_FUNCS_ONCE([strtoimax])
AC_CHECK_DECLS_ONCE([strtoimax])
if test "$ac_cv_have_decl_strtoimax" != yes; then
HAVE_DECL_STRTOIMAX=0
fi
if test $ac_cv_func_strtoimax = yes; then
HAVE_STRTOIMAX=1
dnl On AIX 5.1, strtoimax() fails for values outside the 'int' range.
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether strtoimax works], [gl_cv_func_strtoimax],
[AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <errno.h>
#include <string.h>
#include <inttypes.h>
int main ()
{
if (sizeof (intmax_t) > sizeof (int))
{
const char *s = "4294967295";
char *p;
intmax_t res;
errno = 0;
res = strtoimax (s, &p, 10);
if (p != s + strlen (s))
return 1;
if (errno != 0)
return 2;
if (res != (intmax_t) 65535 * (intmax_t) 65537)
return 3;
}
else
{
const char *s = "2147483647";
char *p;
intmax_t res;
errno = 0;
res = strtoimax (s, &p, 10);
if (p != s + strlen (s))
return 1;
if (errno != 0)
return 2;
if (res != 2147483647)
return 3;
}
return 0;
}
]])],
[gl_cv_func_strtoimax=yes],
[gl_cv_func_strtoimax=no],
[case "$host_os" in
# Guess no on AIX 5.
aix5*) gl_cv_func_strtoimax="guessing no" ;;
# Guess yes otherwise.
*) gl_cv_func_strtoimax="guessing yes" ;;
esac
])
])
case "$gl_cv_func_strtoimax" in
*no) REPLACE_STRTOIMAX=1 ;;
esac
else
HAVE_STRTOIMAX=0
fi
])
# Prerequisites of lib/strtoimax.c.
AC_DEFUN([gl_PREREQ_STRTOIMAX], [
AC_CHECK_DECLS([strtoll])
AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
])
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