diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/libm/t_sqrt.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/libm/t_sqrt.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libm/t_sqrt.c b/contrib/netbsd-tests/lib/libm/t_sqrt.c new file mode 100644 index 000000000000..080aff1c40e8 --- /dev/null +++ b/contrib/netbsd-tests/lib/libm/t_sqrt.c @@ -0,0 +1,386 @@ +/* $NetBSD: t_sqrt.c,v 1.8 2018/11/07 03:59:36 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_sqrt.c,v 1.8 2018/11/07 03:59:36 riastradh Exp $"); + +#include <atf-c.h> +#include <math.h> +#include <float.h> +#include <stdio.h> + +/* + * sqrt(3) + */ +ATF_TC(sqrt_nan); +ATF_TC_HEAD(sqrt_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrt(NaN) == NaN"); +} + +ATF_TC_BODY(sqrt_nan, tc) +{ + const double x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(sqrt(x)) != 0); +} + +ATF_TC(sqrt_pow); +ATF_TC_HEAD(sqrt_pow, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrt(3) vs. pow(3)"); +} + +ATF_TC_BODY(sqrt_pow, tc) +{ + const double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; + const double eps = DBL_EPSILON; + size_t i; + + for (i = 0; i < __arraycount(x); i++) { + double x_sqrt = sqrt(x[i]); + double x_pow12 = pow(x[i], 1.0 / 2.0); + bool ok; + + if (x[i] == 0) { + ok = (x_sqrt == x_pow12); + } else { + ok = (fabs((x_sqrt - x_pow12)/x_sqrt) <= eps); + } + + if (!ok) { + atf_tc_fail_nonfatal("sqrt(%.17g) = %.17g != " + "pow(%.17g, 1/2) = %.17g\n", + x[i], x_sqrt, x[i], x_pow12); + } + } +} + +ATF_TC(sqrt_inf_neg); +ATF_TC_HEAD(sqrt_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrt(-Inf) == NaN"); +} + +ATF_TC_BODY(sqrt_inf_neg, tc) +{ + const double x = -1.0L / 0.0L; + double y = sqrt(x); + + ATF_CHECK(isnan(y) != 0); +} + +ATF_TC(sqrt_inf_pos); +ATF_TC_HEAD(sqrt_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrt(+Inf) == +Inf"); +} + +ATF_TC_BODY(sqrt_inf_pos, tc) +{ + const double x = 1.0L / 0.0L; + double y = sqrt(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(sqrt_zero_neg); +ATF_TC_HEAD(sqrt_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrt(-0.0) == -0.0"); +} + +ATF_TC_BODY(sqrt_zero_neg, tc) +{ + const double x = -0.0L; + double y = sqrt(x); + + if (fabs(y) > 0.0 || signbit(y) == 0) + atf_tc_fail_nonfatal("sqrt(-0.0) != -0.0"); +} + +ATF_TC(sqrt_zero_pos); +ATF_TC_HEAD(sqrt_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrt(+0.0) == +0.0"); +} + +ATF_TC_BODY(sqrt_zero_pos, tc) +{ + const double x = 0.0L; + double y = sqrt(x); + + if (fabs(y) > 0.0 || signbit(y) != 0) + atf_tc_fail_nonfatal("sqrt(+0.0) != +0.0"); +} + +/* + * sqrtf(3) + */ +ATF_TC(sqrtf_nan); +ATF_TC_HEAD(sqrtf_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtf(NaN) == NaN"); +} + +ATF_TC_BODY(sqrtf_nan, tc) +{ + const float x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(sqrtf(x)) != 0); +} + +ATF_TC(sqrtf_powf); +ATF_TC_HEAD(sqrtf_powf, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtf(3) vs. powf(3)"); +} + +ATF_TC_BODY(sqrtf_powf, tc) +{ + const float x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; + const float eps = FLT_EPSILON; + size_t i; + + for (i = 0; i < __arraycount(x); i++) { + float x_sqrt = sqrtf(x[i]); + float x_pow12 = powf(x[i], 1.0 / 2.0); + bool ok; + + if (x[i] == 0) { + ok = (x_sqrt == x_pow12); + } else { + ok = (fabsf((x_sqrt - x_pow12)/x_sqrt) <= eps); + } + + if (!ok) { + atf_tc_fail_nonfatal("sqrtf(%.8g) = %.8g != " + "powf(%.8g, 1/2) = %.8g\n", + (double)x[i], (double)x_sqrt, + (double)x[i], (double)x_pow12); + } + } +} + +ATF_TC(sqrtf_inf_neg); +ATF_TC_HEAD(sqrtf_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtf(-Inf) == NaN"); +} + +ATF_TC_BODY(sqrtf_inf_neg, tc) +{ + const float x = -1.0L / 0.0L; + float y = sqrtf(x); + + ATF_CHECK(isnan(y) != 0); +} + +ATF_TC(sqrtf_inf_pos); +ATF_TC_HEAD(sqrtf_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtf(+Inf) == +Inf"); +} + +ATF_TC_BODY(sqrtf_inf_pos, tc) +{ + const float x = 1.0L / 0.0L; + float y = sqrtf(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(sqrtf_zero_neg); +ATF_TC_HEAD(sqrtf_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtf(-0.0) == -0.0"); +} + +ATF_TC_BODY(sqrtf_zero_neg, tc) +{ + const float x = -0.0L; + float y = sqrtf(x); + + if (fabsf(y) > 0.0 || signbit(y) == 0) + atf_tc_fail_nonfatal("sqrtf(-0.0) != -0.0"); +} + +ATF_TC(sqrtf_zero_pos); +ATF_TC_HEAD(sqrtf_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtf(+0.0) == +0.0"); +} + +ATF_TC_BODY(sqrtf_zero_pos, tc) +{ + const float x = 0.0L; + float y = sqrtf(x); + + if (fabsf(y) > 0.0 || signbit(y) != 0) + atf_tc_fail_nonfatal("sqrtf(+0.0) != +0.0"); +} + +/* + * sqrtl(3) + */ +ATF_TC(sqrtl_nan); +ATF_TC_HEAD(sqrtl_nan, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtl(NaN) == NaN"); +} + +ATF_TC_BODY(sqrtl_nan, tc) +{ + const long double x = 0.0L / 0.0L; + + ATF_CHECK(isnan(x) != 0); + ATF_CHECK(isnan(sqrtl(x)) != 0); +} + +ATF_TC(sqrtl_powl); +ATF_TC_HEAD(sqrtl_powl, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtl(3) vs. powl(3)"); +} + +ATF_TC_BODY(sqrtl_powl, tc) +{ + const long double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; + const long double eps = DBL_EPSILON; /* XXX powl == pow for now */ + size_t i; + + for (i = 0; i < __arraycount(x); i++) { + long double x_sqrt = sqrtl(x[i]); + long double x_pow12 = powl(x[i], 1.0 / 2.0); + bool ok; + + if (x[i] == 0) { + ok = (x_sqrt == x_pow12); + } else { + ok = (fabsl((x_sqrt - x_pow12)/x_sqrt) <= eps); + } + + if (!ok) { + atf_tc_fail_nonfatal("sqrtl(%.35Lg) = %.35Lg != " + "powl(%.35Lg, 1/2) = %.35Lg\n", + x[i], x_sqrt, x[i], x_pow12); + } + } +} + +ATF_TC(sqrtl_inf_neg); +ATF_TC_HEAD(sqrtl_inf_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtl(-Inf) == NaN"); +} + +ATF_TC_BODY(sqrtl_inf_neg, tc) +{ + const long double x = -1.0L / 0.0L; + long double y = sqrtl(x); + + ATF_CHECK(isnan(y) != 0); +} + +ATF_TC(sqrtl_inf_pos); +ATF_TC_HEAD(sqrtl_inf_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtl(+Inf) == +Inf"); +} + +ATF_TC_BODY(sqrtl_inf_pos, tc) +{ + const long double x = 1.0L / 0.0L; + long double y = sqrtl(x); + + ATF_CHECK(isinf(y) != 0); + ATF_CHECK(signbit(y) == 0); +} + +ATF_TC(sqrtl_zero_neg); +ATF_TC_HEAD(sqrtl_zero_neg, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtl(-0.0) == -0.0"); +} + +ATF_TC_BODY(sqrtl_zero_neg, tc) +{ + const long double x = -0.0L; + long double y = sqrtl(x); + + if (fabsl(y) > 0.0 || signbit(y) == 0) + atf_tc_fail_nonfatal("sqrtl(-0.0) != -0.0"); +} + +ATF_TC(sqrtl_zero_pos); +ATF_TC_HEAD(sqrtl_zero_pos, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test sqrtl(+0.0) == +0.0"); +} + +ATF_TC_BODY(sqrtl_zero_pos, tc) +{ + const long double x = 0.0L; + long double y = sqrtl(x); + + if (fabsl(y) > 0.0 || signbit(y) != 0) + atf_tc_fail_nonfatal("sqrtl(+0.0) != +0.0"); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, sqrt_nan); + ATF_TP_ADD_TC(tp, sqrt_pow); + ATF_TP_ADD_TC(tp, sqrt_inf_neg); + ATF_TP_ADD_TC(tp, sqrt_inf_pos); + ATF_TP_ADD_TC(tp, sqrt_zero_neg); + ATF_TP_ADD_TC(tp, sqrt_zero_pos); + + ATF_TP_ADD_TC(tp, sqrtf_nan); + ATF_TP_ADD_TC(tp, sqrtf_powf); + ATF_TP_ADD_TC(tp, sqrtf_inf_neg); + ATF_TP_ADD_TC(tp, sqrtf_inf_pos); + ATF_TP_ADD_TC(tp, sqrtf_zero_neg); + ATF_TP_ADD_TC(tp, sqrtf_zero_pos); + + ATF_TP_ADD_TC(tp, sqrtl_nan); + ATF_TP_ADD_TC(tp, sqrtl_powl); + ATF_TP_ADD_TC(tp, sqrtl_inf_neg); + ATF_TP_ADD_TC(tp, sqrtl_inf_pos); + ATF_TP_ADD_TC(tp, sqrtl_zero_neg); + ATF_TP_ADD_TC(tp, sqrtl_zero_pos); + + return atf_no_error(); +} |