Fix strtoul probe to compile under clang++.

[metaconfig.git] / U / modified / d_strtoul.U

?RCS: $Id: d_strtoul.U,v 3.0.1.1 1997/02/28 15:46:43 ram Exp $
?RCS:
?RCS: Copyright (c) 1996, Andy Dougherty
?RCS: Copyright (c) 1991-1993, Raphael Manfredi
?RCS:
?RCS: You may redistribute only under the terms of the Artistic License,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic License; a copy of which may be found at the root
?RCS: of the source tree for dist 3.0.
?RCS:
?RCS: $Log: d_strtoul.U,v $
?RCS: Revision 3.0.1.1  1997/02/28  15:46:43  ram
?RCS: patch61: created
?RCS:
?RCS:
?MAKE:d_strtoul: Inlibc cat longsize Compile run
?MAKE:	-pick add $@ %<
?S:d_strtoul:
?S:	This variable conditionally defines the HAS_STRTOUL symbol, which
?S:	indicates to the C program that the strtoul() routine is available
?S:	to provide conversion of strings to unsigned long.
?S:.
?C:HAS_STRTOUL (STRTOUL):
?C:	This symbol, if defined, indicates that the strtoul routine is
?C:	available to provide conversion of strings to unsigned long.
?C:.
?H:#$d_strtoul HAS_STRTOUL	/**/
?H:.
?F:!try
: see if strtoul exists
set strtoul d_strtoul
eval $inlibc

case "$d_strtoul" in
"$define")
	$cat <<EOM
Checking whether your strtoul() works okay...
EOM
	$cat >try.c <<'EOCP'
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
static int bad = 0;
void check(const char *s, unsigned long eul, int een) {
	unsigned long gul;
	errno = 0;
	gul = strtoul(s, 0, 10);
	if (!((gul == eul) && (errno == een)))
		bad++;
}
int main() {
	check(" 1", 1L, 0);
	check(" 0", 0L, 0);
EOCP
	case "$longsize" in
	8)
	    $cat >>try.c <<'EOCP'
	check("18446744073709551615", 18446744073709551615UL, 0);
	check("18446744073709551616", 18446744073709551615UL, ERANGE);
#if 0 /* strtoul() for /^-/ strings is undefined. */
	check("-1", 18446744073709551615UL, 0);
	check("-18446744073709551614", 2, 0);
	check("-18446744073709551615", 1, 0);
	check("-18446744073709551616", 18446744073709551615UL, ERANGE);
	check("-18446744073709551617", 18446744073709551615UL, ERANGE);
#endif
EOCP
		;;
	4)
		    $cat >>try.c <<'EOCP'
	check("4294967295", 4294967295UL, 0);
	check("4294967296", 4294967295UL, ERANGE);
#if 0 /* strtoul() for /^-/ strings is undefined. */
	check("-1", 4294967295UL, 0);
	check("-4294967294", 2, 0);
	check("-4294967295", 1, 0);
	check("-4294967296", 4294967295UL, ERANGE);
	check("-4294967297", 4294967295UL, ERANGE);
#endif
EOCP
		;;
	*)
: Should we write these tests to be more portable by sprintf-ing
: ~0 and then manipulating that char string as input for strtol?
		;;
	esac
	$cat >>try.c <<'EOCP'
	if (!bad)
		printf("ok\n");
	return 0;
}
EOCP
	set try
	if eval $compile; then
		case "`$run ./try`" in
		ok) echo "Your strtoul() seems to be working okay." ;;
		*) cat <<EOM >&4
Your strtoul() doesn't seem to be working okay.
EOM
		   d_strtoul="$undef"
		   ;;
		esac
	else
		echo "(I can't seem to compile the test program--assuming it doesn't)"
		d_strtoul="$undef"
	fi
	;;
esac