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/* $NetBSD: t_precision.c,v 1.2 2014/11/04 00:20:19 justin Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Joerg Sonnenberger.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_precision.c,v 1.2 2014/11/04 00:20:19 justin Exp $");
#include <atf-c.h>
#include <float.h>
#include <stdlib.h>
ATF_TC(t_precision);
ATF_TC_HEAD(t_precision, tc)
{
atf_tc_set_md_var(tc, "descr",
"Basic precision test for double and long double");
}
volatile double x = 1;
volatile long double y = 1;
ATF_TC_BODY(t_precision, tc)
{
x += DBL_EPSILON;
ATF_CHECK(x != 1.0);
x -= 1;
ATF_CHECK(x == DBL_EPSILON);
x = 2;
x += DBL_EPSILON;
ATF_CHECK(x == 2.0);
#if !defined(__FreeBSD__) || !defined(__i386__)
y += LDBL_EPSILON;
ATF_CHECK(y != 1.0L);
y -= 1;
ATF_CHECK(y == LDBL_EPSILON);
y = 2;
y += LDBL_EPSILON;
ATF_CHECK(y == 2.0L);
#endif
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, t_precision);
return atf_no_error();
}
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