208 lines
4.6 KiB
C
208 lines
4.6 KiB
C
/* $NetBSD: t_tanh.c,v 1.7 2014/03/03 10:39:08 martin Exp $ */
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/*-
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* Copyright (c) 2011 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 Jukka Ruohonen.
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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_tanh.c,v 1.7 2014/03/03 10:39:08 martin Exp $");
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#include <atf-c.h>
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#include <math.h>
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/*
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* tanh(3)
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*/
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ATF_TC(tanh_nan);
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ATF_TC_HEAD(tanh_nan, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanh(NaN) == NaN");
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}
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ATF_TC_BODY(tanh_nan, tc)
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{
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const double x = 0.0L / 0.0L;
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ATF_CHECK(isnan(x) != 0);
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ATF_CHECK(isnan(tanh(x)) != 0);
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}
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ATF_TC(tanh_inf_neg);
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ATF_TC_HEAD(tanh_inf_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanh(-Inf) == -1.0");
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}
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ATF_TC_BODY(tanh_inf_neg, tc)
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{
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const double x = -1.0L / 0.0L;
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ATF_CHECK(tanh(x) == -1.0);
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}
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ATF_TC(tanh_inf_pos);
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ATF_TC_HEAD(tanh_inf_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanh(+Inf) == +1.0");
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}
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ATF_TC_BODY(tanh_inf_pos, tc)
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{
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const double x = 1.0L / 0.0L;
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ATF_CHECK(tanh(x) == 1.0);
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}
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ATF_TC(tanh_zero_neg);
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ATF_TC_HEAD(tanh_zero_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanh(-0.0) == -0.0");
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}
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ATF_TC_BODY(tanh_zero_neg, tc)
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{
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const double x = -0.0L;
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double y = tanh(x);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(x) != 0);
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ATF_REQUIRE_MSG(signbit(y) != 0,
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"compiler bug, waiting for newer gcc import, see PR lib/44057");
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}
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ATF_TC(tanh_zero_pos);
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ATF_TC_HEAD(tanh_zero_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanh(+0.0) == +0.0");
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}
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ATF_TC_BODY(tanh_zero_pos, tc)
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{
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const double x = 0.0L;
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double y = tanh(x);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(x) == 0);
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ATF_CHECK(signbit(y) == 0);
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}
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/*
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* tanhf(3)
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*/
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ATF_TC(tanhf_nan);
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ATF_TC_HEAD(tanhf_nan, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanhf(NaN) == NaN");
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}
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ATF_TC_BODY(tanhf_nan, tc)
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{
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const float x = 0.0L / 0.0L;
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ATF_CHECK(isnan(x) != 0);
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ATF_CHECK(isnan(tanhf(x)) != 0);
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}
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ATF_TC(tanhf_inf_neg);
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ATF_TC_HEAD(tanhf_inf_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanhf(-Inf) == -1.0");
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}
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ATF_TC_BODY(tanhf_inf_neg, tc)
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{
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const float x = -1.0L / 0.0L;
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ATF_CHECK(tanhf(x) == -1.0);
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}
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ATF_TC(tanhf_inf_pos);
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ATF_TC_HEAD(tanhf_inf_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanhf(+Inf) == +1.0");
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}
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ATF_TC_BODY(tanhf_inf_pos, tc)
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{
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const float x = 1.0L / 0.0L;
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ATF_CHECK(tanhf(x) == 1.0);
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}
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ATF_TC(tanhf_zero_neg);
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ATF_TC_HEAD(tanhf_zero_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanhf(-0.0) == -0.0");
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}
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ATF_TC_BODY(tanhf_zero_neg, tc)
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{
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const float x = -0.0L;
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float y = tanh(x);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(x) != 0);
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ATF_REQUIRE_MSG(signbit(y) != 0,
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"compiler bug, waiting for newer gcc import, see PR lib/44057");
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}
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ATF_TC(tanhf_zero_pos);
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ATF_TC_HEAD(tanhf_zero_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanhf(+0.0) == +0.0");
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}
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ATF_TC_BODY(tanhf_zero_pos, tc)
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{
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const float x = 0.0L;
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float y = tanhf(x);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(x) == 0);
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ATF_CHECK(signbit(y) == 0);
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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, tanh_nan);
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ATF_TP_ADD_TC(tp, tanh_inf_neg);
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ATF_TP_ADD_TC(tp, tanh_inf_pos);
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ATF_TP_ADD_TC(tp, tanh_zero_neg);
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ATF_TP_ADD_TC(tp, tanh_zero_pos);
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ATF_TP_ADD_TC(tp, tanhf_nan);
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ATF_TP_ADD_TC(tp, tanhf_inf_neg);
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ATF_TP_ADD_TC(tp, tanhf_inf_pos);
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ATF_TP_ADD_TC(tp, tanhf_zero_neg);
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ATF_TP_ADD_TC(tp, tanhf_zero_pos);
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return atf_no_error();
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}
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