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85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
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/* Test for ldbl-128ibm fmodl etc. handling of equal values.
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Copyright (C) 2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <float.h>
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#include <math.h>
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#include <stdio.h>
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/* FUNC is defined to be the name of the function to test. */
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#define STRX(x) #x
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#define STR(x) STRX (x)
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#define SFUNC STR (FUNC)
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union u
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{
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long double ld;
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double d[2];
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};
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volatile union u p1 = { .d = { DBL_MIN, 0.0 } };
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volatile union u p2 = { .d = { DBL_MIN, -0.0 } };
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volatile union u m1 = { .d = { -DBL_MIN, 0.0 } };
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volatile union u m2 = { .d = { -DBL_MIN, -0.0 } };
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static int
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test_func (const char *s, long double x, long double y, long double expected)
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{
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volatile long double r;
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r = FUNC (x, y);
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if (r != expected || copysignl (1.0, r) != copysignl (1.0, expected))
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{
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printf ("FAIL: " SFUNC " (%s)\n", s);
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return 1;
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}
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else
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{
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printf ("PASS: " SFUNC " (%s)\n", s);
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return 0;
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}
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}
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#define TEST_FUNC(a, b, e) test_func (#a ", " #b, a, b, e)
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static int
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do_test (void)
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{
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int result = 0;
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SETUP;
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result |= TEST_FUNC (p1.ld, p1.ld, 0.0L);
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result |= TEST_FUNC (p1.ld, p2.ld, 0.0L);
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result |= TEST_FUNC (p1.ld, m1.ld, 0.0L);
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result |= TEST_FUNC (p1.ld, m2.ld, 0.0L);
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result |= TEST_FUNC (p2.ld, p1.ld, 0.0L);
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result |= TEST_FUNC (p2.ld, p2.ld, 0.0L);
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result |= TEST_FUNC (p2.ld, m1.ld, 0.0L);
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result |= TEST_FUNC (p2.ld, m2.ld, 0.0L);
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result |= TEST_FUNC (m1.ld, p1.ld, -0.0L);
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result |= TEST_FUNC (m1.ld, p2.ld, -0.0L);
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result |= TEST_FUNC (m1.ld, m1.ld, -0.0L);
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result |= TEST_FUNC (m1.ld, m2.ld, -0.0L);
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result |= TEST_FUNC (m2.ld, p1.ld, -0.0L);
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result |= TEST_FUNC (m2.ld, p2.ld, -0.0L);
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result |= TEST_FUNC (m2.ld, m1.ld, -0.0L);
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result |= TEST_FUNC (m2.ld, m2.ld, -0.0L);
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../../../test-skeleton.c"
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