1068ebf32SEnji Cooper /* $NetBSD: t_precision.c,v 1.2 2014/11/04 00:20:19 justin Exp $ */ 257718be8SEnji Cooper 357718be8SEnji Cooper /*- 457718be8SEnji Cooper * Copyright (c) 2013 The NetBSD Foundation, Inc. 557718be8SEnji Cooper * All rights reserved. 657718be8SEnji Cooper * 757718be8SEnji Cooper * This code is derived from software contributed to The NetBSD Foundation 857718be8SEnji Cooper * by Joerg Sonnenberger. 957718be8SEnji Cooper * 1057718be8SEnji Cooper * Redistribution and use in source and binary forms, with or without 1157718be8SEnji Cooper * modification, are permitted provided that the following conditions 1257718be8SEnji Cooper * are met: 1357718be8SEnji Cooper * 1. Redistributions of source code must retain the above copyright 1457718be8SEnji Cooper * notice, this list of conditions and the following disclaimer. 1557718be8SEnji Cooper * 2. Redistributions in binary form must reproduce the above copyright 1657718be8SEnji Cooper * notice, this list of conditions and the following disclaimer in the 1757718be8SEnji Cooper * documentation and/or other materials provided with the distribution. 1857718be8SEnji Cooper * 1957718be8SEnji Cooper * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 2057718be8SEnji Cooper * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2157718be8SEnji Cooper * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2257718be8SEnji Cooper * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 2357718be8SEnji Cooper * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2457718be8SEnji Cooper * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2557718be8SEnji Cooper * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2657718be8SEnji Cooper * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2757718be8SEnji Cooper * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2857718be8SEnji Cooper * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2957718be8SEnji Cooper * POSSIBILITY OF SUCH DAMAGE. 3057718be8SEnji Cooper */ 3157718be8SEnji Cooper #include <sys/cdefs.h> 32068ebf32SEnji Cooper __RCSID("$NetBSD: t_precision.c,v 1.2 2014/11/04 00:20:19 justin Exp $"); 3357718be8SEnji Cooper 3457718be8SEnji Cooper #include <atf-c.h> 3557718be8SEnji Cooper 3657718be8SEnji Cooper #include <float.h> 3757718be8SEnji Cooper #include <stdlib.h> 3857718be8SEnji Cooper 3957718be8SEnji Cooper ATF_TC(t_precision); 4057718be8SEnji Cooper 4157718be8SEnji Cooper ATF_TC_HEAD(t_precision, tc) 4257718be8SEnji Cooper { 4357718be8SEnji Cooper atf_tc_set_md_var(tc, "descr", 4457718be8SEnji Cooper "Basic precision test for double and long double"); 4557718be8SEnji Cooper } 4657718be8SEnji Cooper 4757718be8SEnji Cooper volatile double x = 1; 4857718be8SEnji Cooper volatile long double y = 1; 4957718be8SEnji Cooper 5057718be8SEnji Cooper ATF_TC_BODY(t_precision, tc) 5157718be8SEnji Cooper { 5257718be8SEnji Cooper x += DBL_EPSILON; 5357718be8SEnji Cooper ATF_CHECK(x != 1.0); 5457718be8SEnji Cooper x -= 1; 5557718be8SEnji Cooper ATF_CHECK(x == DBL_EPSILON); 5657718be8SEnji Cooper 5757718be8SEnji Cooper x = 2; 5857718be8SEnji Cooper x += DBL_EPSILON; 5957718be8SEnji Cooper ATF_CHECK(x == 2.0); 6057718be8SEnji Cooper 61*66152388SEnji Cooper #if !defined(__FreeBSD__) || !defined(__i386__) 6257718be8SEnji Cooper y += LDBL_EPSILON; 6357718be8SEnji Cooper ATF_CHECK(y != 1.0L); 6457718be8SEnji Cooper y -= 1; 6557718be8SEnji Cooper ATF_CHECK(y == LDBL_EPSILON); 6657718be8SEnji Cooper y = 2; 6757718be8SEnji Cooper y += LDBL_EPSILON; 6857718be8SEnji Cooper ATF_CHECK(y == 2.0L); 69*66152388SEnji Cooper #endif 7057718be8SEnji Cooper } 7157718be8SEnji Cooper 7257718be8SEnji Cooper ATF_TP_ADD_TCS(tp) 7357718be8SEnji Cooper { 7457718be8SEnji Cooper ATF_TP_ADD_TC(tp, t_precision); 7557718be8SEnji Cooper 7657718be8SEnji Cooper return atf_no_error(); 7757718be8SEnji Cooper } 78