diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/libm/t_cos.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/libm/t_cos.c | 399 |
1 files changed, 399 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libm/t_cos.c b/contrib/netbsd-tests/lib/libm/t_cos.c new file mode 100644 index 000000000000..ca5f0aab7ffa --- /dev/null +++ b/contrib/netbsd-tests/lib/libm/t_cos.c @@ -0,0 +1,399 @@ +/* $NetBSD: t_cos.c,v 1.9 2019/05/27 00:10:36 maya 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, -1.0000000000000000, 999 }, + { -135, -2.356194490192345, -0.7071067811865476, 999 }, + { -90, -1.5707963267948966, 6.123233995736766e-17, -4.3711388e-08 }, + { -90, -1.5707963267948968, -1.6081226496766366e-16, -4.3711388e-08 }, + { -45, -0.785398163397448, 0.7071067811865478, 999 }, + { 0, 0.000000000000000, 1.0000000000000000, 999 }, + { 30, 0.523598775598299, 0.8660254037844386, 999 }, + { 45, 0.785398163397448, 0.7071067811865478, 999 }, + { 60, 1.0471975511965976, 0.5000000000000001, 999 }, + { 60, 1.0471975511965979, 0.4999999999999999, 999 }, + { 90, 1.570796326794897, -3.8285686989269494e-16, -4.3711388e-08 }, + { 120, 2.0943951023931953, -0.4999999999999998, 999 }, + { 120, 2.0943951023931957, -0.5000000000000002, 999 }, + { 135, 2.356194490192345, -0.7071067811865476, 999 }, + { 150, 2.617993877991494, -0.8660254037844386, 999 }, + { 180, 3.141592653589793, -1.0000000000000000, 999 }, + { 270, 4.712388980384690, -1.8369701987210297e-16, 1.1924881e-08 }, + { 360, 6.283185307179586, 1.0000000000000000, 999 }, +}; + +#ifdef __HAVE_LONG_DOUBLE +/* + * cosl(3) + */ +ATF_TC(cosl_angles); +ATF_TC_HEAD(cosl_angles, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test some selected angles"); +} + +ATF_TC_BODY(cosl_angles, tc) +{ + /* + * XXX The given data is for double, so take that + * into account and expect less precise results.. + */ + const long double eps = DBL_EPSILON; + size_t i; + + for (i = 0; i < __arraycount(angles); i++) { + int deg = angles[i].angle; + long double theta = angles[i].x; + long double cos_theta = angles[i].y; + + assert(cos_theta != 0); + if (!(fabsl((cosl(theta) - cos_theta)/cos_theta) <= eps)) { + atf_tc_fail_nonfatal("cos(%d deg = %.17Lg) = %.17Lg" + " != %.17Lg", + deg, theta, cosl(theta), cos_theta); + } + } +} + +ATF_TC(cosl_nan); +ATF_TC_HEAD(cosl_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosl(NaN) == NaN"); +} + +ATF_TC_BODY(cosl_nan, tc) +{ + const long double x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(cosl(x)) != 0); +} + +ATF_TC(cosl_inf_neg); +ATF_TC_HEAD(cosl_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosl(-Inf) == NaN"); +} + +ATF_TC_BODY(cosl_inf_neg, tc) +{ + const long double x = -1.0L / 0.0L; + + ATF_CHECK(isnan(cosl(x)) != 0); +} + +ATF_TC(cosl_inf_pos); +ATF_TC_HEAD(cosl_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosl(+Inf) == NaN"); +} + +ATF_TC_BODY(cosl_inf_pos, tc) +{ + const long double x = 1.0L / 0.0L; + + ATF_CHECK(isnan(cosl(x)) != 0); +} + + +ATF_TC(cosl_zero_neg); +ATF_TC_HEAD(cosl_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosl(-0.0) == 1.0"); +} + +ATF_TC_BODY(cosl_zero_neg, tc) +{ + const long double x = -0.0L; + + ATF_CHECK(cosl(x) == 1.0); +} + +ATF_TC(cosl_zero_pos); +ATF_TC_HEAD(cosl_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosl(+0.0) == 1.0"); +} + +ATF_TC_BODY(cosl_zero_pos, tc) +{ + const long double x = 0.0L; + + ATF_CHECK(cosl(x) == 1.0); +} +#endif + +/* + * cos(3) + */ +ATF_TC(cos_angles); +ATF_TC_HEAD(cos_angles, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test some selected angles"); +} + +ATF_TC_BODY(cos_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 cos_theta = angles[i].y; + + assert(cos_theta != 0); + if (!(fabs((cos(theta) - cos_theta)/cos_theta) <= eps)) { + atf_tc_fail_nonfatal("cos(%d deg = %.17g) = %.17g" + " != %.17g", + deg, theta, cos(theta), cos_theta); + } + } +} + +ATF_TC(cos_nan); +ATF_TC_HEAD(cos_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cos(NaN) == NaN"); +} + +ATF_TC_BODY(cos_nan, tc) +{ + const double x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(cos(x)) != 0); +} + +ATF_TC(cos_inf_neg); +ATF_TC_HEAD(cos_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cos(-Inf) == NaN"); +} + +ATF_TC_BODY(cos_inf_neg, tc) +{ + const double x = -1.0L / 0.0L; + + ATF_CHECK(isnan(cos(x)) != 0); +} + +ATF_TC(cos_inf_pos); +ATF_TC_HEAD(cos_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cos(+Inf) == NaN"); +} + +ATF_TC_BODY(cos_inf_pos, tc) +{ + const double x = 1.0L / 0.0L; + + ATF_CHECK(isnan(cos(x)) != 0); +} + + +ATF_TC(cos_zero_neg); +ATF_TC_HEAD(cos_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cos(-0.0) == 1.0"); +} + +ATF_TC_BODY(cos_zero_neg, tc) +{ + const double x = -0.0L; + + ATF_CHECK(cos(x) == 1.0); +} + +ATF_TC(cos_zero_pos); +ATF_TC_HEAD(cos_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cos(+0.0) == 1.0"); +} + +ATF_TC_BODY(cos_zero_pos, tc) +{ + const double x = 0.0L; + + ATF_CHECK(cos(x) == 1.0); +} + +/* + * cosf(3) + */ +ATF_TC(cosf_angles); +ATF_TC_HEAD(cosf_angles, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test some selected angles"); +} + +ATF_TC_BODY(cosf_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 cos_theta = angles[i].fy; + + /* + * Force rounding to float even if FLT_EVAL_METHOD=2, + * as is the case on i386. + * + * The volatile should not be necessary, by C99 Sec. + * 5.2.4.2.2. para. 8 on p. 24 which specifies that + * assignment and cast remove all extra range and precision, + * but seems to be needed to work around a compiler bug. + */ + volatile float result = cosf(theta); + + if (cos_theta == 999) + cos_theta = angles[i].y; + + assert(cos_theta != 0); + if (!(fabsf((result - cos_theta)/cos_theta) <= eps)) { + atf_tc_fail_nonfatal("cosf(%d deg = %.8g) = %.8g" + " != %.8g", deg, theta, result, cos_theta); + } + } +} + +ATF_TC(cosf_nan); +ATF_TC_HEAD(cosf_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosf(NaN) == NaN"); +} + +ATF_TC_BODY(cosf_nan, tc) +{ + const float x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(cosf(x)) != 0); +} + +ATF_TC(cosf_inf_neg); +ATF_TC_HEAD(cosf_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosf(-Inf) == NaN"); +} + +ATF_TC_BODY(cosf_inf_neg, tc) +{ + const float x = -1.0L / 0.0L; + + if (isnan(cosf(x)) == 0) { + atf_tc_expect_fail("PR lib/45362"); + atf_tc_fail("cosf(-Inf) != NaN"); + } +} + +ATF_TC(cosf_inf_pos); +ATF_TC_HEAD(cosf_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosf(+Inf) == NaN"); +} + +ATF_TC_BODY(cosf_inf_pos, tc) +{ + const float x = 1.0L / 0.0L; + + if (isnan(cosf(x)) == 0) { + atf_tc_expect_fail("PR lib/45362"); + atf_tc_fail("cosf(+Inf) != NaN"); + } +} + + +ATF_TC(cosf_zero_neg); +ATF_TC_HEAD(cosf_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosf(-0.0) == 1.0"); +} + +ATF_TC_BODY(cosf_zero_neg, tc) +{ + const float x = -0.0L; + + ATF_CHECK(cosf(x) == 1.0); +} + +ATF_TC(cosf_zero_pos); +ATF_TC_HEAD(cosf_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosf(+0.0) == 1.0"); +} + +ATF_TC_BODY(cosf_zero_pos, tc) +{ + const float x = 0.0L; + + ATF_CHECK(cosf(x) == 1.0); +} + +ATF_TP_ADD_TCS(tp) +{ +#ifdef __HAVE_LONG_DOUBLE + ATF_TP_ADD_TC(tp, cosl_angles); + ATF_TP_ADD_TC(tp, cosl_nan); + ATF_TP_ADD_TC(tp, cosl_inf_neg); + ATF_TP_ADD_TC(tp, cosl_inf_pos); + ATF_TP_ADD_TC(tp, cosl_zero_neg); + ATF_TP_ADD_TC(tp, cosl_zero_pos); +#endif + + ATF_TP_ADD_TC(tp, cos_angles); + ATF_TP_ADD_TC(tp, cos_nan); + ATF_TP_ADD_TC(tp, cos_inf_neg); + ATF_TP_ADD_TC(tp, cos_inf_pos); + ATF_TP_ADD_TC(tp, cos_zero_neg); + ATF_TP_ADD_TC(tp, cos_zero_pos); + + ATF_TP_ADD_TC(tp, cosf_angles); + ATF_TP_ADD_TC(tp, cosf_nan); + ATF_TP_ADD_TC(tp, cosf_inf_neg); + ATF_TP_ADD_TC(tp, cosf_inf_pos); + ATF_TP_ADD_TC(tp, cosf_zero_neg); + ATF_TP_ADD_TC(tp, cosf_zero_pos); + + return atf_no_error(); +} |