diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/libm/t_tan.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/libm/t_tan.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libm/t_tan.c b/contrib/netbsd-tests/lib/libm/t_tan.c new file mode 100644 index 000000000000..1bbc4b4d4c95 --- /dev/null +++ b/contrib/netbsd-tests/lib/libm/t_tan.c @@ -0,0 +1,292 @@ +/* $NetBSD: t_tan.c,v 1.7 2018/11/07 04:00:13 riastradh 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 <assert.h> +#include <atf-c.h> +#include <float.h> +#include <math.h> + +static const struct { + int angle; + double x; + double y; + float fy; +} angles[] = { + { -180, -3.141592653589793, 1.2246467991473532e-16, -8.7422777e-08 }, + { -135, -2.356194490192345, 1.0000000000000002, 999 }, + { -45, -0.785398163397448, -0.9999999999999992, 999 }, + { 0, 0.000000000000000, 0.0000000000000000, 999 }, + { 30, 0.5235987755982988, 0.57735026918962573, 999 }, + { 45, 0.785398163397448, 0.9999999999999992, 999 }, + { 60, 1.047197551196598, 1.7320508075688785, 1.7320509 }, + { 120, 2.094395102393195, -1.7320508075688801, -1.7320505 }, + { 135, 2.356194490192345, -1.0000000000000002, 999 }, + { 150, 2.617993877991494, -0.57735026918962629, -0.57735032 }, + { 180, 3.141592653589793, -1.2246467991473532e-16, 8.7422777e-08 }, + { 360, 6.283185307179586, -2.4492935982947064e-16, 1.7484555e-07 }, +}; + +/* + * tan(3) + */ +ATF_TC(tan_angles); +ATF_TC_HEAD(tan_angles, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test some selected angles"); +} + +ATF_TC_BODY(tan_angles, tc) +{ + const double eps = DBL_EPSILON; + size_t i; + + for (i = 0; i < __arraycount(angles); i++) { + int deg = angles[i].angle; + double theta = angles[i].x; + double tan_theta = angles[i].y; + bool ok; + + if (theta == 0) { + /* Should be computed exactly. */ + assert(tan_theta == 0); + ok = (tan(theta) == 0); + } else { + assert(tan_theta != 0); + ok = (fabs((tan(theta) - tan_theta)/tan_theta) <= eps); + } + + if (!ok) { + atf_tc_fail_nonfatal("tan(%d deg = %.17g) = %.17g" + " != %.17g", + deg, theta, tan(theta), tan_theta); + } + } +} + +ATF_TC(tan_nan); +ATF_TC_HEAD(tan_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tan(NaN) == NaN"); +} + +ATF_TC_BODY(tan_nan, tc) +{ + const double x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(tan(x)) != 0); +} + +ATF_TC(tan_inf_neg); +ATF_TC_HEAD(tan_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tan(-Inf) == NaN"); +} + +ATF_TC_BODY(tan_inf_neg, tc) +{ + const double x = -1.0L / 0.0L; + + ATF_CHECK(isnan(tan(x)) != 0); +} + +ATF_TC(tan_inf_pos); +ATF_TC_HEAD(tan_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tan(+Inf) == NaN"); +} + +ATF_TC_BODY(tan_inf_pos, tc) +{ + const double x = 1.0L / 0.0L; + + ATF_CHECK(isnan(tan(x)) != 0); +} + + +ATF_TC(tan_zero_neg); +ATF_TC_HEAD(tan_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tan(-0.0) == -0.0"); +} + +ATF_TC_BODY(tan_zero_neg, tc) +{ + const double x = -0.0L; + + ATF_CHECK(tan(x) == x); +} + +ATF_TC(tan_zero_pos); +ATF_TC_HEAD(tan_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tan(+0.0) == +0.0"); +} + +ATF_TC_BODY(tan_zero_pos, tc) +{ + const double x = 0.0L; + + ATF_CHECK(tan(x) == x); +} + +/* + * tanf(3) + */ +ATF_TC(tanf_angles); +ATF_TC_HEAD(tanf_angles, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test some selected angles"); +} + +ATF_TC_BODY(tanf_angles, tc) +{ + const float eps = FLT_EPSILON; + size_t i; + + for (i = 0; i < __arraycount(angles); i++) { + int deg = angles[i].angle; + float theta = angles[i].x; + float tan_theta = angles[i].fy; + bool ok; + + if (tan_theta == 999) + tan_theta = angles[i].y; + + if (theta == 0) { + /* Should be computed exactly. */ + assert(tan_theta == 0); + ok = (tan(theta) == 0); + } else { + assert(tan_theta != 0); + ok = (fabsf((tanf(theta) - tan_theta)/tan_theta) + <= eps); + } + + if (!ok) { + atf_tc_fail_nonfatal("tanf(%d deg) = %.8g != %.8g", + deg, tanf(theta), tan_theta); + } + } +} + +ATF_TC(tanf_nan); +ATF_TC_HEAD(tanf_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tanf(NaN) == NaN"); +} + +ATF_TC_BODY(tanf_nan, tc) +{ + const float x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(tanf(x)) != 0); +} + +ATF_TC(tanf_inf_neg); +ATF_TC_HEAD(tanf_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tanf(-Inf) == NaN"); +} + +ATF_TC_BODY(tanf_inf_neg, tc) +{ + const float x = -1.0L / 0.0L; + + if (isnan(tanf(x)) == 0) { + atf_tc_expect_fail("PR lib/45362"); + atf_tc_fail("tanf(-Inf) != NaN"); + } +} + +ATF_TC(tanf_inf_pos); +ATF_TC_HEAD(tanf_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tanf(+Inf) == NaN"); +} + +ATF_TC_BODY(tanf_inf_pos, tc) +{ + const float x = 1.0L / 0.0L; + + if (isnan(tanf(x)) == 0) { + atf_tc_expect_fail("PR lib/45362"); + atf_tc_fail("tanf(+Inf) != NaN"); + } +} + + +ATF_TC(tanf_zero_neg); +ATF_TC_HEAD(tanf_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tanf(-0.0) == -0.0"); +} + +ATF_TC_BODY(tanf_zero_neg, tc) +{ + const float x = -0.0L; + + ATF_CHECK(tanf(x) == x); +} + +ATF_TC(tanf_zero_pos); +ATF_TC_HEAD(tanf_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test tanf(+0.0) == +0.0"); +} + +ATF_TC_BODY(tanf_zero_pos, tc) +{ + const float x = 0.0L; + + ATF_CHECK(tanf(x) == x); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, tan_angles); + ATF_TP_ADD_TC(tp, tan_nan); + ATF_TP_ADD_TC(tp, tan_inf_neg); + ATF_TP_ADD_TC(tp, tan_inf_pos); + ATF_TP_ADD_TC(tp, tan_zero_neg); + ATF_TP_ADD_TC(tp, tan_zero_pos); + + ATF_TP_ADD_TC(tp, tanf_angles); + ATF_TP_ADD_TC(tp, tanf_nan); + ATF_TP_ADD_TC(tp, tanf_inf_neg); + ATF_TP_ADD_TC(tp, tanf_inf_pos); + ATF_TP_ADD_TC(tp, tanf_zero_neg); + ATF_TP_ADD_TC(tp, tanf_zero_pos); + + return atf_no_error(); +} |