107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
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/* Test mpf_cmp_d.
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Copyright 2001, 2003, 2003, 2005 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "tests.h"
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#define SGN(n) ((n) > 0 ? 1 : (n) < 0 ? -1 : 0)
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void
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check_one (const char *name, mpf_srcptr x, double y, int cmp)
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{
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int got;
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got = mpf_cmp_d (x, y);
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if (SGN(got) != cmp)
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{
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int i;
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printf ("mpf_cmp_d wrong (from %s)\n", name);
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printf (" got %d\n", got);
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printf (" want %d\n", cmp);
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mpf_trace (" x", x);
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printf (" y %g\n", y);
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mp_trace_base=-16;
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mpf_trace (" x", x);
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printf (" y %g\n", y);
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printf (" y");
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for (i = 0; i < sizeof(y); i++)
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printf (" %02X", (unsigned) ((unsigned char *) &y)[i]);
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printf ("\n");
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abort ();
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}
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}
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void
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check_infinity (void)
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{
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mpf_t x;
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double y = tests_infinity_d ();
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if (y == 0.0)
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return;
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mpf_init (x);
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/* 0 cmp inf */
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mpf_set_ui (x, 0L);
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check_one ("check_infinity", x, y, -1);
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check_one ("check_infinity", x, -y, 1);
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/* 123 cmp inf */
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mpf_set_ui (x, 123L);
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check_one ("check_infinity", x, y, -1);
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check_one ("check_infinity", x, -y, 1);
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/* -123 cmp inf */
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mpf_set_si (x, -123L);
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check_one ("check_infinity", x, y, -1);
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check_one ("check_infinity", x, -y, 1);
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/* 2^5000 cmp inf */
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mpf_set_ui (x, 1L);
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mpf_mul_2exp (x, x, 5000L);
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check_one ("check_infinity", x, y, -1);
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check_one ("check_infinity", x, -y, 1);
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/* -2^5000 cmp inf */
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mpf_neg (x, x);
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check_one ("check_infinity", x, y, -1);
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check_one ("check_infinity", x, -y, 1);
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mpf_clear (x);
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}
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int
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main (int argc, char *argv[])
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{
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tests_start ();
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check_infinity ();
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tests_end ();
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exit (0);
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}
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