85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/* $NetBSD: t_precision.c,v 1.3 2016/08/27 10:07:05 christos Exp $ */
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/*-
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* Copyright (c) 2013 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Joerg Sonnenberger.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: t_precision.c,v 1.3 2016/08/27 10:07:05 christos Exp $");
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#include <atf-c.h>
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#include <float.h>
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#include <stdlib.h>
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ATF_TC(t_precision);
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ATF_TC_HEAD(t_precision, tc)
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{
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atf_tc_set_md_var(tc, "descr",
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"Basic precision test for double and long double");
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}
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static volatile double x = 1;
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#if __HAVE_LONG_DOUBLE
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static volatile long double y = 1;
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#endif
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ATF_TC_BODY(t_precision, tc)
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{
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#ifdef __FreeBSD__
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#ifdef __i386__
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atf_tc_expect_fail("the __HAVE_LONG_DOUBLE checks fail on i386");
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#endif
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#endif
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x += DBL_EPSILON;
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ATF_CHECK(x != 1.0);
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x -= 1;
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ATF_CHECK(x == DBL_EPSILON);
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x = 2;
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x += DBL_EPSILON;
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ATF_CHECK(x == 2.0);
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#if __HAVE_LONG_DOUBLE
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y += LDBL_EPSILON;
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ATF_CHECK(y != 1.0L);
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y -= 1;
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ATF_CHECK(y == LDBL_EPSILON);
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y = 2;
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y += LDBL_EPSILON;
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ATF_CHECK(y == 2.0L);
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#endif
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, t_precision);
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return atf_no_error();
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}
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