diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/libm/t_cbrt.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/libm/t_cbrt.c | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libm/t_cbrt.c b/contrib/netbsd-tests/lib/libm/t_cbrt.c new file mode 100644 index 000000000000..639bc7e06517 --- /dev/null +++ b/contrib/netbsd-tests/lib/libm/t_cbrt.c @@ -0,0 +1,412 @@ +/* $NetBSD: t_cbrt.c,v 1.5 2018/11/15 05:14:20 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 <sys/cdefs.h> +__RCSID("$NetBSD: t_cbrt.c,v 1.5 2018/11/15 05:14:20 riastradh Exp $"); + +#include <atf-c.h> +#include <float.h> +#include <math.h> +#include <stdio.h> + +/* + * cbrt(3) + */ +ATF_TC(cbrt_nan); +ATF_TC_HEAD(cbrt_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrt(NaN) == NaN"); +} + +ATF_TC_BODY(cbrt_nan, tc) +{ + const double x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(cbrt(x)) != 0); +} + +ATF_TC(cbrt_pow); +ATF_TC_HEAD(cbrt_pow, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrt(3) vs. pow(3)"); +} + +ATF_TC_BODY(cbrt_pow, tc) +{ + const double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.0 }; + /* Neither cbrt nor pow is required to be correctly rounded. */ + const double eps = 2*DBL_EPSILON; + size_t i; + + for (i = 0; i < __arraycount(x); i++) { + double x_cbrt = cbrt(x[i]); + double x_pow13 = pow(x[i], 1.0 / 3.0); + bool ok; + + if (x[i] == 0) { + ok = (x_cbrt == x_pow13); + } else { + ok = (fabs((x_cbrt - x_pow13)/x_cbrt) <= eps); + } + + if (!ok) { + atf_tc_fail_nonfatal("cbrt(%.17g) = %.17g != " + "pow(%.17g, 1/3) = %.17g\n", + x[i], x_cbrt, x[i], x_pow13); + } + } +} + +ATF_TC(cbrt_inf_neg); +ATF_TC_HEAD(cbrt_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrt(-Inf) == -Inf"); +} + +ATF_TC_BODY(cbrt_inf_neg, tc) +{ + const double x = -1.0L / 0.0L; + double y = cbrt(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) != 0); +} + +ATF_TC(cbrt_inf_pos); +ATF_TC_HEAD(cbrt_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrt(+Inf) == +Inf"); +} + +ATF_TC_BODY(cbrt_inf_pos, tc) +{ + const double x = 1.0L / 0.0L; + double y = cbrt(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(cbrt_zero_neg); +ATF_TC_HEAD(cbrt_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrt(-0.0) == -0.0"); +} + +ATF_TC_BODY(cbrt_zero_neg, tc) +{ + const double x = -0.0L; + double y = cbrt(x); + + if (fabs(y) > 0.0 || signbit(y) == 0) + atf_tc_fail_nonfatal("cbrt(-0.0) != -0.0"); +} + +ATF_TC(cbrt_zero_pos); +ATF_TC_HEAD(cbrt_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrt(+0.0) == +0.0"); +} + +ATF_TC_BODY(cbrt_zero_pos, tc) +{ + const double x = 0.0L; + double y = cbrt(x); + + if (fabs(y) > 0.0 || signbit(y) != 0) + atf_tc_fail_nonfatal("cbrt(+0.0) != +0.0"); +} + +/* + * cbrtf(3) + */ +ATF_TC(cbrtf_nan); +ATF_TC_HEAD(cbrtf_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtf(NaN) == NaN"); +} + +ATF_TC_BODY(cbrtf_nan, tc) +{ + const float x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(cbrtf(x)) != 0); +} + +ATF_TC(cbrtf_powf); +ATF_TC_HEAD(cbrtf_powf, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtf(3) vs. powf(3)"); +} + +ATF_TC_BODY(cbrtf_powf, tc) +{ + const float x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.0 }; + /* Neither cbrt nor pow is required to be correctly rounded. */ + const float eps = 2*FLT_EPSILON; + size_t i; + + for (i = 0; i < __arraycount(x); i++) { + float x_cbrt = cbrtf(x[i]); + float x_pow13 = powf(x[i], 1.0 / 3.0); + bool ok; + + if (x[i] == 0) { + ok = (x_cbrt == x_pow13); + } else { + ok = (fabsf((x_cbrt - x_pow13)/x_cbrt) <= eps); + } + + if (!ok) { + atf_tc_fail_nonfatal("cbrtf(%.9g) = %.9g. != " + "powf(%.9g, 1/3) = %.9g\n", + (double)x[i], (double)x_cbrt, + (double)x[i], (double)x_pow13); + } + } +} + +ATF_TC(cbrtf_inf_neg); +ATF_TC_HEAD(cbrtf_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtf(-Inf) == -Inf"); +} + +ATF_TC_BODY(cbrtf_inf_neg, tc) +{ + const float x = -1.0L / 0.0L; + float y = cbrtf(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) != 0); +} + +ATF_TC(cbrtf_inf_pos); +ATF_TC_HEAD(cbrtf_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtf(+Inf) == +Inf"); +} + +ATF_TC_BODY(cbrtf_inf_pos, tc) +{ + const float x = 1.0L / 0.0L; + float y = cbrtf(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(cbrtf_zero_neg); +ATF_TC_HEAD(cbrtf_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtf(-0.0) == -0.0"); +} + +ATF_TC_BODY(cbrtf_zero_neg, tc) +{ + const float x = -0.0L; + float y = cbrtf(x); + + if (fabsf(y) > 0.0 || signbit(y) == 0) + atf_tc_fail_nonfatal("cbrtf(-0.0) != -0.0"); +} + +ATF_TC(cbrtf_zero_pos); +ATF_TC_HEAD(cbrtf_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtf(+0.0) == +0.0"); +} + +ATF_TC_BODY(cbrtf_zero_pos, tc) +{ + const float x = 0.0L; + float y = cbrtf(x); + + if (fabsf(y) > 0.0 || signbit(y) != 0) + atf_tc_fail_nonfatal("cbrtf(+0.0) != +0.0"); +} + +#if !defined(__FreeBSD__) || LDBL_PREC != 53 +/* + * cbrtl(3) + */ +ATF_TC(cbrtl_nan); +ATF_TC_HEAD(cbrtl_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtl(NaN) == NaN"); +} + +ATF_TC_BODY(cbrtl_nan, tc) +{ + const long double x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(cbrtl(x)) != 0); +} + +ATF_TC(cbrtl_powl); +ATF_TC_HEAD(cbrtl_powl, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtl(3) vs. powl(3)"); +} + +ATF_TC_BODY(cbrtl_powl, tc) +{ + const long double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.0 }; + /* Neither cbrt nor pow is required to be correctly rounded. */ + const long double eps = 2*LDBL_EPSILON; + size_t i; + +#if defined(__amd64__) && defined(__clang__) && __clang_major__ >= 7 && \ + __clang_major__ < 10 && __FreeBSD_cc_version < 1300002 + atf_tc_expect_fail("test fails with clang 7-9 - bug 234040"); +#endif + for (i = 0; i < __arraycount(x); i++) { + long double x_cbrt = cbrtl(x[i]); +#ifdef __FreeBSD__ + /* + * NetBSD doesn't have a real powl/cbrtl implementation, they + * just call the double version. On FreeBSD we have a real + * powl implementation so we have to cast the second argument + * to long double before dividing to get a more precise + * approximation of 1/3. + * TODO: upstream this diff. + */ + long double x_pow13 = powl(x[i], (long double)1.0 / 3.0); +#else + long double x_pow13 = powl(x[i], 1.0 / 3.0); +#endif + bool ok; + + if (x[i] == 0) { + ok = (x_cbrt == x_pow13); + } else { + ok = (fabsl((x_cbrt - x_pow13)/x_cbrt) <= eps); + } + + if (!ok) { + atf_tc_fail_nonfatal("cbrtl(%.35Lg) = %.35Lg != " + "powl(%.35Lg, 1/3) = %.35Lg\n", + x[i], x_cbrt, x[i], x_pow13); + } + } +} + +ATF_TC(cbrtl_inf_neg); +ATF_TC_HEAD(cbrtl_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtl(-Inf) == -Inf"); +} + +ATF_TC_BODY(cbrtl_inf_neg, tc) +{ + const long double x = -1.0L / 0.0L; + long double y = cbrtl(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) != 0); +} + +ATF_TC(cbrtl_inf_pos); +ATF_TC_HEAD(cbrtl_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtl(+Inf) == +Inf"); +} + +ATF_TC_BODY(cbrtl_inf_pos, tc) +{ + const long double x = 1.0L / 0.0L; + long double y = cbrtl(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(cbrtl_zero_neg); +ATF_TC_HEAD(cbrtl_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtl(-0.0) == -0.0"); +} + +ATF_TC_BODY(cbrtl_zero_neg, tc) +{ + const long double x = -0.0L; + long double y = cbrtl(x); + + if (fabsl(y) > 0.0 || signbit(y) == 0) + atf_tc_fail_nonfatal("cbrtl(-0.0) != -0.0"); +} + +ATF_TC(cbrtl_zero_pos); +ATF_TC_HEAD(cbrtl_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test cbrtl(+0.0) == +0.0"); +} + +ATF_TC_BODY(cbrtl_zero_pos, tc) +{ + const long double x = 0.0L; + long double y = cbrtl(x); + + if (fabsl(y) > 0.0 || signbit(y) != 0) + atf_tc_fail_nonfatal("cbrtl(+0.0) != +0.0"); +} +#endif + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, cbrt_nan); + ATF_TP_ADD_TC(tp, cbrt_pow); + ATF_TP_ADD_TC(tp, cbrt_inf_neg); + ATF_TP_ADD_TC(tp, cbrt_inf_pos); + ATF_TP_ADD_TC(tp, cbrt_zero_neg); + ATF_TP_ADD_TC(tp, cbrt_zero_pos); + + ATF_TP_ADD_TC(tp, cbrtf_nan); + ATF_TP_ADD_TC(tp, cbrtf_powf); + ATF_TP_ADD_TC(tp, cbrtf_inf_neg); + ATF_TP_ADD_TC(tp, cbrtf_inf_pos); + ATF_TP_ADD_TC(tp, cbrtf_zero_neg); + ATF_TP_ADD_TC(tp, cbrtf_zero_pos); + +#if !defined(__FreeBSD__) || LDBL_PREC != 53 + ATF_TP_ADD_TC(tp, cbrtl_nan); + ATF_TP_ADD_TC(tp, cbrtl_powl); + ATF_TP_ADD_TC(tp, cbrtl_inf_neg); + ATF_TP_ADD_TC(tp, cbrtl_inf_pos); + ATF_TP_ADD_TC(tp, cbrtl_zero_neg); + ATF_TP_ADD_TC(tp, cbrtl_zero_pos); +#endif + + return atf_no_error(); +} |