freebsd-dev/lib/msun/tests/fmaxmin_test.c
Enji Cooper abe427af75 Fix warnings in lib/msun/tests/... to help pave way for WARNS?= 6.
- Staticize variables.
- Use nitems liberally. Wherever nitems is used, use unsigned integers
- Remove unused variables (argc, argv, etc)

This fixes most issues -- some issues remain in logarithm_test though.

MFC after:	1 week
Sponsored by:	Dell EMC Isilon
2017-03-04 10:07:46 +00:00

155 lines
4.7 KiB
C

/*-
* 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>
__FBSDID("$FreeBSD$");
#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) do { \
type __x = (x); /* convert before we clear exceptions */ \
type __y = (y); \
feclearexcept(ALL_STD_EXCEPT); \
long double __result = func((__x), (__y)); \
if (fetestexcept(ALL_STD_EXCEPT)) { \
fprintf(stderr, #func "(%.20Lg, %.20Lg) raised 0x%x\n", \
(x), (y), fetestexcept(FE_ALL_EXCEPT)); \
ok = 0; \
} \
if (!fpequal(__result, (expected))) { \
fprintf(stderr, #func "(%.20Lg, %.20Lg) = %.20Lg, " \
"expected %.20Lg\n", (x), (y), __result, (expected)); \
ok = 0; \
} \
} while (0)
static int
testall_r(long double big, long double small)
{
int ok;
long double expected_max = isnan(big) ? small : big;
long double expected_min = isnan(small) ? big : small;
ok = 1;
TEST(fmaxf, float, big, small, expected_max);
TEST(fmaxf, float, small, big, expected_max);
TEST(fmax, double, big, small, expected_max);
TEST(fmax, double, small, big, expected_max);
TEST(fmaxl, long double, big, small, expected_max);
TEST(fmaxl, long double, small, big, expected_max);
TEST(fminf, float, big, small, expected_min);
TEST(fminf, float, small, big, expected_min);
TEST(fmin, double, big, small, expected_min);
TEST(fmin, double, small, big, expected_min);
TEST(fminl, long double, big, small, expected_min);
TEST(fminl, long double, small, big, expected_min);
return (ok);
}
static const char *comment = NULL;
/*
* 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(int testnum, 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]);
if (!testall_r(big, small)) {
fprintf(stderr, "FAILURE in rounding mode %d\n",
rmodes[i]);
break;
}
}
printf("%sok %d - big = %.20Lg, small = %.20Lg%s\n",
(i == 4) ? "" : "not ", testnum, big, small,
comment == NULL ? "" : comment);
}
/* Clang 3.8.0+ fails the invariants for testcase 6, 7, 10, and 11. */
#if defined(__clang__) && \
((__clang_major__ > 3)) || \
((__clang_major__ == 3 && __clang_minor__ >= 8))
#define affected_by_bug_208703
#endif
int
main(void)
{
printf("1..12\n");
testall(1, 1.0, 0.0);
testall(2, 42.0, nextafterf(42.0, -INFINITY));
testall(3, nextafterf(42.0, INFINITY), 42.0);
testall(4, -5.0, -5.0);
testall(5, -3.0, -4.0);
#ifdef affected_by_bug_208703
comment = "# TODO: testcase 6-7 fails invariant with clang 3.8+ (bug 208703)";
#endif
testall(6, 1.0, NAN);
testall(7, INFINITY, NAN);
comment = NULL;
testall(8, INFINITY, 1.0);
testall(9, -3.0, -INFINITY);
testall(10, 3.0, -INFINITY);
#ifdef affected_by_bug_208703
comment = "# TODO: testcase 11-12 fails invariant with clang 3.8+ (bug 208703)";
#endif
testall(11, NAN, NAN);
/* This test isn't strictly required to work by C99. */
testall(12, 0.0, -0.0);
comment = NULL;
return (0);
}