diff options
Diffstat (limited to 'lib/libm/t_cosh.c')
| -rw-r--r-- | lib/libm/t_cosh.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/lib/libm/t_cosh.c b/lib/libm/t_cosh.c new file mode 100644 index 0000000000000..3f998de761bb2 --- /dev/null +++ b/lib/libm/t_cosh.c @@ -0,0 +1,270 @@ +/* $NetBSD: t_cosh.c,v 1.6 2014/03/03 10:39:08 martin 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_cosh.c,v 1.6 2014/03/03 10:39:08 martin Exp $"); + +#include <atf-c.h> +#include <math.h> +#include <stdio.h> + +static const struct { + double x; + double y; + double e; +} values[] = { + { -10, 11013.23292010332, 1e4, }, + { -2, 3.762195691083631, 1, }, + { -1, 1.543080634815244, 1, }, + { -0.05, 1.001250260438369, 1, }, + { -0.001, 1.000000500000042, 1, }, + { 0, 1, 1, }, + { 0.001, 1.000000500000042, 1, }, + { 0.05, 1.001250260438369, 1, }, + { 1, 1.543080634815244, 1, }, + { 2, 3.762195691083631, 1, }, + { 10, 11013.23292010332, 1e4, }, +}; + +/* + * cosh(3) + */ +ATF_TC(cosh_inrange); +ATF_TC_HEAD(cosh_inrange, tc) +{ + atf_tc_set_md_var(tc, "descr", "cosh(x) for some values"); +} + +ATF_TC_BODY(cosh_inrange, tc) +{ + double eps; + double x; + double y; + size_t i; + + for (i = 0; i < __arraycount(values); i++) { + x = values[i].x; + y = values[i].y; + eps = 1e-15 * values[i].e; + + if (fabs(cosh(x) - y) > eps) + atf_tc_fail_nonfatal("cosh(%g) != %g\n", x, y); + } +} + +ATF_TC(cosh_nan); +ATF_TC_HEAD(cosh_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosh(NaN) == NaN"); +} + +ATF_TC_BODY(cosh_nan, tc) +{ + const double x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(cosh(x)) != 0); +} + +ATF_TC(cosh_inf_neg); +ATF_TC_HEAD(cosh_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosh(-Inf) == +Inf"); +} + +ATF_TC_BODY(cosh_inf_neg, tc) +{ + const double x = -1.0L / 0.0L; + double y = cosh(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(cosh_inf_pos); +ATF_TC_HEAD(cosh_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosh(+Inf) == +Inf"); +} + +ATF_TC_BODY(cosh_inf_pos, tc) +{ + const double x = 1.0L / 0.0L; + double y = cosh(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(cosh_zero_neg); +ATF_TC_HEAD(cosh_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosh(-0.0) == 1.0"); +} + +ATF_TC_BODY(cosh_zero_neg, tc) +{ + const double x = -0.0L; + + if (cosh(x) != 1.0) + atf_tc_fail_nonfatal("cosh(-0.0) != 1.0"); +} + +ATF_TC(cosh_zero_pos); +ATF_TC_HEAD(cosh_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cosh(+0.0) == 1.0"); +} + +ATF_TC_BODY(cosh_zero_pos, tc) +{ + const double x = 0.0L; + + if (cosh(x) != 1.0) + atf_tc_fail_nonfatal("cosh(+0.0) != 1.0"); +} + +/* + * coshf(3) + */ +ATF_TC(coshf_inrange); +ATF_TC_HEAD(coshf_inrange, tc) +{ + atf_tc_set_md_var(tc, "descr", "coshf(x) for some values"); +} + +ATF_TC_BODY(coshf_inrange, tc) +{ + float eps; + float x; + float y; + size_t i; + + for (i = 0; i < __arraycount(values); i++) { + x = values[i].x; + y = values[i].y; + eps = 1e-6 * values[i].e; + + if (fabsf(coshf(x) - y) > eps) + atf_tc_fail_nonfatal("coshf(%g) != %g\n", x, y); + } +} + +ATF_TC(coshf_nan); +ATF_TC_HEAD(coshf_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coshf(NaN) == NaN"); +} + +ATF_TC_BODY(coshf_nan, tc) +{ + const float x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(coshf(x)) != 0); +} + +ATF_TC(coshf_inf_neg); +ATF_TC_HEAD(coshf_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coshf(-Inf) == +Inf"); +} + +ATF_TC_BODY(coshf_inf_neg, tc) +{ + const float x = -1.0L / 0.0L; + float y = coshf(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(coshf_inf_pos); +ATF_TC_HEAD(coshf_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coshf(+Inf) == +Inf"); +} + +ATF_TC_BODY(coshf_inf_pos, tc) +{ + const float x = 1.0L / 0.0L; + float y = coshf(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(coshf_zero_neg); +ATF_TC_HEAD(coshf_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coshf(-0.0) == 1.0"); +} + +ATF_TC_BODY(coshf_zero_neg, tc) +{ + const float x = -0.0L; + + if (coshf(x) != 1.0) + atf_tc_fail_nonfatal("coshf(-0.0) != 1.0"); +} + +ATF_TC(coshf_zero_pos); +ATF_TC_HEAD(coshf_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coshf(+0.0) == 1.0"); +} + +ATF_TC_BODY(coshf_zero_pos, tc) +{ + const float x = 0.0L; + + if (coshf(x) != 1.0) + atf_tc_fail_nonfatal("coshf(+0.0) != 1.0"); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, cosh_inrange); + ATF_TP_ADD_TC(tp, cosh_nan); + ATF_TP_ADD_TC(tp, cosh_inf_neg); + ATF_TP_ADD_TC(tp, cosh_inf_pos); + ATF_TP_ADD_TC(tp, cosh_zero_neg); + ATF_TP_ADD_TC(tp, cosh_zero_pos); + + ATF_TP_ADD_TC(tp, coshf_inrange); + ATF_TP_ADD_TC(tp, coshf_nan); + ATF_TP_ADD_TC(tp, coshf_inf_neg); + ATF_TP_ADD_TC(tp, coshf_inf_pos); + ATF_TP_ADD_TC(tp, coshf_zero_neg); + ATF_TP_ADD_TC(tp, coshf_zero_pos); + + return atf_no_error(); +} |