1ec3feb648
I did this without a full vendor update since that would cause too many conflicts. Since these files now almost match the NetBSD sources the next git subtree merge should work just fine. Reviewed By: lwhsu Differential Revision: https://reviews.freebsd.org/D28797
293 lines
6.5 KiB
C
293 lines
6.5 KiB
C
/* $NetBSD: t_tan.c,v 1.7 2018/11/07 04:00:13 riastradh 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 <assert.h>
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#include <atf-c.h>
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#include <float.h>
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#include <math.h>
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static const struct {
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int angle;
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double x;
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double y;
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float fy;
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} angles[] = {
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{ -180, -3.141592653589793, 1.2246467991473532e-16, -8.7422777e-08 },
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{ -135, -2.356194490192345, 1.0000000000000002, 999 },
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{ -45, -0.785398163397448, -0.9999999999999992, 999 },
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{ 0, 0.000000000000000, 0.0000000000000000, 999 },
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{ 30, 0.5235987755982988, 0.57735026918962573, 999 },
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{ 45, 0.785398163397448, 0.9999999999999992, 999 },
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{ 60, 1.047197551196598, 1.7320508075688785, 1.7320509 },
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{ 120, 2.094395102393195, -1.7320508075688801, -1.7320505 },
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{ 135, 2.356194490192345, -1.0000000000000002, 999 },
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{ 150, 2.617993877991494, -0.57735026918962629, -0.57735032 },
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{ 180, 3.141592653589793, -1.2246467991473532e-16, 8.7422777e-08 },
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{ 360, 6.283185307179586, -2.4492935982947064e-16, 1.7484555e-07 },
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};
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/*
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* tan(3)
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*/
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ATF_TC(tan_angles);
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ATF_TC_HEAD(tan_angles, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test some selected angles");
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}
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ATF_TC_BODY(tan_angles, tc)
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{
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const double eps = DBL_EPSILON;
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size_t i;
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for (i = 0; i < __arraycount(angles); i++) {
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int deg = angles[i].angle;
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double theta = angles[i].x;
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double tan_theta = angles[i].y;
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bool ok;
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if (theta == 0) {
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/* Should be computed exactly. */
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assert(tan_theta == 0);
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ok = (tan(theta) == 0);
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} else {
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assert(tan_theta != 0);
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ok = (fabs((tan(theta) - tan_theta)/tan_theta) <= eps);
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}
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if (!ok) {
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atf_tc_fail_nonfatal("tan(%d deg = %.17g) = %.17g"
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" != %.17g",
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deg, theta, tan(theta), tan_theta);
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}
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}
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}
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ATF_TC(tan_nan);
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ATF_TC_HEAD(tan_nan, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tan(NaN) == NaN");
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}
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ATF_TC_BODY(tan_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(tan(x)) != 0);
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}
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ATF_TC(tan_inf_neg);
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ATF_TC_HEAD(tan_inf_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tan(-Inf) == NaN");
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}
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ATF_TC_BODY(tan_inf_neg, tc)
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{
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const double x = -1.0L / 0.0L;
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ATF_CHECK(isnan(tan(x)) != 0);
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}
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ATF_TC(tan_inf_pos);
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ATF_TC_HEAD(tan_inf_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tan(+Inf) == NaN");
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}
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ATF_TC_BODY(tan_inf_pos, tc)
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{
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const double x = 1.0L / 0.0L;
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ATF_CHECK(isnan(tan(x)) != 0);
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}
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ATF_TC(tan_zero_neg);
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ATF_TC_HEAD(tan_zero_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tan(-0.0) == -0.0");
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}
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ATF_TC_BODY(tan_zero_neg, tc)
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{
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const double x = -0.0L;
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ATF_CHECK(tan(x) == x);
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}
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ATF_TC(tan_zero_pos);
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ATF_TC_HEAD(tan_zero_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tan(+0.0) == +0.0");
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}
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ATF_TC_BODY(tan_zero_pos, tc)
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{
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const double x = 0.0L;
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ATF_CHECK(tan(x) == x);
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}
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/*
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* tanf(3)
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*/
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ATF_TC(tanf_angles);
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ATF_TC_HEAD(tanf_angles, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test some selected angles");
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}
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ATF_TC_BODY(tanf_angles, tc)
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{
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const float eps = FLT_EPSILON;
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size_t i;
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for (i = 0; i < __arraycount(angles); i++) {
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int deg = angles[i].angle;
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float theta = angles[i].x;
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float tan_theta = angles[i].fy;
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bool ok;
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if (tan_theta == 999)
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tan_theta = angles[i].y;
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if (theta == 0) {
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/* Should be computed exactly. */
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assert(tan_theta == 0);
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ok = (tan(theta) == 0);
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} else {
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assert(tan_theta != 0);
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ok = (fabsf((tanf(theta) - tan_theta)/tan_theta)
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<= eps);
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}
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if (!ok) {
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atf_tc_fail_nonfatal("tanf(%d deg) = %.8g != %.8g",
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deg, tanf(theta), tan_theta);
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}
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}
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}
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ATF_TC(tanf_nan);
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ATF_TC_HEAD(tanf_nan, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanf(NaN) == NaN");
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}
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ATF_TC_BODY(tanf_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(tanf(x)) != 0);
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}
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ATF_TC(tanf_inf_neg);
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ATF_TC_HEAD(tanf_inf_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanf(-Inf) == NaN");
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}
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ATF_TC_BODY(tanf_inf_neg, tc)
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{
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const float x = -1.0L / 0.0L;
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if (isnan(tanf(x)) == 0) {
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atf_tc_expect_fail("PR lib/45362");
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atf_tc_fail("tanf(-Inf) != NaN");
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}
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}
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ATF_TC(tanf_inf_pos);
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ATF_TC_HEAD(tanf_inf_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanf(+Inf) == NaN");
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}
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ATF_TC_BODY(tanf_inf_pos, tc)
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{
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const float x = 1.0L / 0.0L;
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if (isnan(tanf(x)) == 0) {
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atf_tc_expect_fail("PR lib/45362");
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atf_tc_fail("tanf(+Inf) != NaN");
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}
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}
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ATF_TC(tanf_zero_neg);
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ATF_TC_HEAD(tanf_zero_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanf(-0.0) == -0.0");
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}
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ATF_TC_BODY(tanf_zero_neg, tc)
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{
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const float x = -0.0L;
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ATF_CHECK(tanf(x) == x);
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}
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ATF_TC(tanf_zero_pos);
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ATF_TC_HEAD(tanf_zero_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test tanf(+0.0) == +0.0");
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}
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ATF_TC_BODY(tanf_zero_pos, tc)
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{
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const float x = 0.0L;
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ATF_CHECK(tanf(x) == x);
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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, tan_angles);
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ATF_TP_ADD_TC(tp, tan_nan);
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ATF_TP_ADD_TC(tp, tan_inf_neg);
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ATF_TP_ADD_TC(tp, tan_inf_pos);
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ATF_TP_ADD_TC(tp, tan_zero_neg);
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ATF_TP_ADD_TC(tp, tan_zero_pos);
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ATF_TP_ADD_TC(tp, tanf_angles);
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ATF_TP_ADD_TC(tp, tanf_nan);
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ATF_TP_ADD_TC(tp, tanf_inf_neg);
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ATF_TP_ADD_TC(tp, tanf_inf_pos);
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ATF_TP_ADD_TC(tp, tanf_zero_neg);
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ATF_TP_ADD_TC(tp, tanf_zero_pos);
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return atf_no_error();
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}
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