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Diffstat (limited to 'lib/msun/tests/fmaxmin_test.c')
| -rw-r--r-- | lib/msun/tests/fmaxmin_test.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/lib/msun/tests/fmaxmin_test.c b/lib/msun/tests/fmaxmin_test.c new file mode 100644 index 000000000000..51956b1084af --- /dev/null +++ b/lib/msun/tests/fmaxmin_test.c @@ -0,0 +1,183 @@ +/*- + * Copyright (c) 2008 David Schultz <das@FreeBSD.org> + * All rights reserved. + * + * 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 AUTHOR 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 AUTHOR 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. + */ + +/* + * Tests for fmax{,f,l}() and fmin{,f,l}. + */ + +#include <sys/cdefs.h> +#include <fenv.h> +#include <float.h> +#include <math.h> +#include <stdio.h> + +#include "test-utils.h" + +#pragma STDC FENV_ACCESS ON + +/* + * Test whether func(x, y) has the expected result, and make sure no + * exceptions are raised. + */ +#define TEST(func, type, x, y, expected, rmode) do { \ + type __x = (x); /* convert before we clear exceptions */ \ + type __y = (y); \ + ATF_REQUIRE_EQ(0, feclearexcept(ALL_STD_EXCEPT)); \ + long double __result = func((__x), (__y)); \ + CHECK_FP_EXCEPTIONS_MSG(0, ALL_STD_EXCEPT, \ + #func "(%.20Lg, %.20Lg) rmode%d", (x), (y), rmode); \ + ATF_CHECK_MSG(fpequal_cs(__result, (expected), true), \ + #func "(%.20Lg, %.20Lg) rmode%d = %.20Lg, expected %.20Lg\n", \ + (x), (y), rmode, __result, (expected)); \ +} while (0) + +static void +testall_r(long double big, long double small, int rmode) +{ + long double expected_max = isnan(big) ? small : big; + long double expected_min = isnan(small) ? big : small; + TEST(fmaxf, float, big, small, expected_max, rmode); + TEST(fmaxf, float, small, big, expected_max, rmode); + TEST(fmax, double, big, small, expected_max, rmode); + TEST(fmax, double, small, big, expected_max, rmode); + TEST(fmaxl, long double, big, small, expected_max, rmode); + TEST(fmaxl, long double, small, big, expected_max, rmode); + TEST(fminf, float, big, small, expected_min, rmode); + TEST(fminf, float, small, big, expected_min, rmode); + TEST(fmin, double, big, small, expected_min, rmode); + TEST(fmin, double, small, big, expected_min, rmode); + TEST(fminl, long double, big, small, expected_min, rmode); + TEST(fminl, long double, small, big, expected_min, rmode); +} + +/* + * Test all the functions: fmaxf, fmax, fmaxl, fminf, fmin, and fminl, + * in all rounding modes and with the arguments in different orders. + * The input 'big' must be >= 'small'. + */ +static void +testall(long double big, long double small) +{ + static const int rmodes[] = { + FE_TONEAREST, FE_UPWARD, FE_DOWNWARD, FE_TOWARDZERO + }; + int i; + + for (i = 0; i < 4; i++) { + fesetround(rmodes[i]); + testall_r(big, small, rmodes[i]); + } +} + +ATF_TC_WITHOUT_HEAD(test1); +ATF_TC_BODY(test1, tc) +{ + testall(1.0, 0.0); +} + +ATF_TC_WITHOUT_HEAD(test2); +ATF_TC_BODY(test2, tc) +{ + testall(42.0, nextafterf(42.0, -INFINITY)); +} +ATF_TC_WITHOUT_HEAD(test3); +ATF_TC_BODY(test3, tc) +{ + testall(nextafterf(42.0, INFINITY), 42.0); +} + +ATF_TC_WITHOUT_HEAD(test4); +ATF_TC_BODY(test4, tc) +{ + testall(-5.0, -5.0); +} + +ATF_TC_WITHOUT_HEAD(test5); +ATF_TC_BODY(test5, tc) +{ + testall(-3.0, -4.0); +} + +ATF_TC_WITHOUT_HEAD(test6); +ATF_TC_BODY(test6, tc) +{ + testall(1.0, NAN); +} +ATF_TC_WITHOUT_HEAD(test7); +ATF_TC_BODY(test7, tc) +{ + testall(INFINITY, NAN); +} + +ATF_TC_WITHOUT_HEAD(test8); +ATF_TC_BODY(test8, tc) +{ + testall(INFINITY, 1.0); +} + +ATF_TC_WITHOUT_HEAD(test9); +ATF_TC_BODY(test9, tc) +{ + testall(-3.0, -INFINITY); +} + +ATF_TC_WITHOUT_HEAD(test10); +ATF_TC_BODY(test10, tc) +{ + testall(3.0, -INFINITY); +} + +ATF_TC_WITHOUT_HEAD(test11); +ATF_TC_BODY(test11, tc) +{ + testall(NAN, NAN); +} + +ATF_TC_WITHOUT_HEAD(test12); +ATF_TC_BODY(test12, tc) +{ + /* This test isn't strictly required to work by C99. */ + testall(0.0, -0.0); +} + + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, test1); + ATF_TP_ADD_TC(tp, test2); + ATF_TP_ADD_TC(tp, test3); + ATF_TP_ADD_TC(tp, test4); + ATF_TP_ADD_TC(tp, test5); + ATF_TP_ADD_TC(tp, test6); + ATF_TP_ADD_TC(tp, test7); + ATF_TP_ADD_TC(tp, test8); + ATF_TP_ADD_TC(tp, test9); + ATF_TP_ADD_TC(tp, test10); + ATF_TP_ADD_TC(tp, test11); + ATF_TP_ADD_TC(tp, test12); + + return (atf_no_error()); +} |