minix/tests/lib/libm/t_tanh.c

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/* $NetBSD: t_tanh.c,v 1.6 2011/09/12 17:45:51 jruoho Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jukka Ruohonen.
*
* 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_tanh.c,v 1.6 2011/09/12 17:45:51 jruoho Exp $");
#include <atf-c.h>
#include <math.h>
/*
* tanh(3)
*/
ATF_TC(tanh_nan);
ATF_TC_HEAD(tanh_nan, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanh(NaN) == NaN");
}
ATF_TC_BODY(tanh_nan, tc)
{
#ifndef __vax__
const double x = 0.0L / 0.0L;
ATF_CHECK(isnan(x) != 0);
ATF_CHECK(isnan(tanh(x)) != 0);
#endif
}
ATF_TC(tanh_inf_neg);
ATF_TC_HEAD(tanh_inf_neg, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanh(-Inf) == -1.0");
}
ATF_TC_BODY(tanh_inf_neg, tc)
{
#ifndef __vax__
const double x = -1.0L / 0.0L;
ATF_CHECK(tanh(x) == -1.0);
#endif
}
ATF_TC(tanh_inf_pos);
ATF_TC_HEAD(tanh_inf_pos, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanh(+Inf) == +1.0");
}
ATF_TC_BODY(tanh_inf_pos, tc)
{
#ifndef __vax__
const double x = 1.0L / 0.0L;
ATF_CHECK(tanh(x) == 1.0);
#endif
}
ATF_TC(tanh_zero_neg);
ATF_TC_HEAD(tanh_zero_neg, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanh(-0.0) == -0.0");
}
ATF_TC_BODY(tanh_zero_neg, tc)
{
#ifndef __vax__
const double x = -0.0L;
double y = tanh(x);
ATF_CHECK(x == y);
ATF_CHECK(signbit(x) != 0);
ATF_REQUIRE_MSG(signbit(y) != 0,
"compiler bug, waiting for newer gcc import, see PR lib/44057");
#endif
}
ATF_TC(tanh_zero_pos);
ATF_TC_HEAD(tanh_zero_pos, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanh(+0.0) == +0.0");
}
ATF_TC_BODY(tanh_zero_pos, tc)
{
#ifndef __vax__
const double x = 0.0L;
double y = tanh(x);
ATF_CHECK(x == y);
ATF_CHECK(signbit(x) == 0);
ATF_CHECK(signbit(y) == 0);
#endif
}
/*
* tanhf(3)
*/
ATF_TC(tanhf_nan);
ATF_TC_HEAD(tanhf_nan, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanhf(NaN) == NaN");
}
ATF_TC_BODY(tanhf_nan, tc)
{
#ifndef __vax__
const float x = 0.0L / 0.0L;
ATF_CHECK(isnan(x) != 0);
ATF_CHECK(isnan(tanhf(x)) != 0);
#endif
}
ATF_TC(tanhf_inf_neg);
ATF_TC_HEAD(tanhf_inf_neg, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanhf(-Inf) == -1.0");
}
ATF_TC_BODY(tanhf_inf_neg, tc)
{
#ifndef __vax__
const float x = -1.0L / 0.0L;
ATF_CHECK(tanhf(x) == -1.0);
#endif
}
ATF_TC(tanhf_inf_pos);
ATF_TC_HEAD(tanhf_inf_pos, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanhf(+Inf) == +1.0");
}
ATF_TC_BODY(tanhf_inf_pos, tc)
{
#ifndef __vax__
const float x = 1.0L / 0.0L;
ATF_CHECK(tanhf(x) == 1.0);
#endif
}
ATF_TC(tanhf_zero_neg);
ATF_TC_HEAD(tanhf_zero_neg, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanhf(-0.0) == -0.0");
}
ATF_TC_BODY(tanhf_zero_neg, tc)
{
#ifndef __vax__
const float x = -0.0L;
float y = tanh(x);
ATF_CHECK(x == y);
ATF_CHECK(signbit(x) != 0);
ATF_REQUIRE_MSG(signbit(y) != 0,
"compiler bug, waiting for newer gcc import, see PR lib/44057");
#endif
}
ATF_TC(tanhf_zero_pos);
ATF_TC_HEAD(tanhf_zero_pos, tc)
{
atf_tc_set_md_var(tc, "descr", "Test tanhf(+0.0) == +0.0");
}
ATF_TC_BODY(tanhf_zero_pos, tc)
{
#ifndef __vax__
const float x = 0.0L;
float y = tanhf(x);
ATF_CHECK(x == y);
ATF_CHECK(signbit(x) == 0);
ATF_CHECK(signbit(y) == 0);
#endif
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, tanh_nan);
ATF_TP_ADD_TC(tp, tanh_inf_neg);
ATF_TP_ADD_TC(tp, tanh_inf_pos);
ATF_TP_ADD_TC(tp, tanh_zero_neg);
ATF_TP_ADD_TC(tp, tanh_zero_pos);
ATF_TP_ADD_TC(tp, tanhf_nan);
ATF_TP_ADD_TC(tp, tanhf_inf_neg);
ATF_TP_ADD_TC(tp, tanhf_inf_pos);
ATF_TP_ADD_TC(tp, tanhf_zero_neg);
ATF_TP_ADD_TC(tp, tanhf_zero_pos);
return atf_no_error();
}