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117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/* Test file for mpfr_copysign, mpfr_setsign and mpfr_signbit.
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Copyright 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
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Contributed by the AriC and Caramel projects, INRIA.
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This file is part of the GNU MPFR Library.
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The GNU MPFR 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 3 of the License, or (at your
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option) any later version.
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The GNU MPFR 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 MPFR Library; see the file COPYING.LESSER. If not, see
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http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include "mpfr-test.h"
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static void
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copysign_variant (mpfr_ptr z, mpfr_srcptr x, mpfr_srcptr y,
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mpfr_rnd_t rnd_mode, int k)
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{
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mpfr_clear_flags ();
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switch (k)
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{
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case 0:
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mpfr_copysign (z, x, y, MPFR_RNDN);
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return;
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case 1:
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(mpfr_copysign) (z, x, y, MPFR_RNDN);
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return;
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case 2:
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mpfr_setsign (z, x, mpfr_signbit (y), MPFR_RNDN);
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return;
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case 3:
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mpfr_setsign (z, x, (mpfr_signbit) (y), MPFR_RNDN);
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return;
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case 4:
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(mpfr_setsign) (z, x, mpfr_signbit (y), MPFR_RNDN);
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return;
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case 5:
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(mpfr_setsign) (z, x, (mpfr_signbit) (y), MPFR_RNDN);
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return;
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}
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}
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int
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main (void)
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{
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mpfr_t x, y, z;
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int i, j, k;
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tests_start_mpfr ();
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mpfr_init (x);
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mpfr_init (y);
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mpfr_init (z);
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for (i = 0; i <= 1; i++)
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for (j = 0; j <= 1; j++)
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for (k = 0; k <= 5; k++)
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{
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mpfr_set_nan (x);
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i ? MPFR_SET_NEG (x) : MPFR_SET_POS (x);
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mpfr_set_nan (y);
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j ? MPFR_SET_NEG (y) : MPFR_SET_POS (y);
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copysign_variant (z, x, y, MPFR_RNDN, k);
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if (MPFR_SIGN (z) != MPFR_SIGN (y) || !mpfr_nanflag_p ())
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{
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printf ("Error in mpfr_copysign (%cNaN, %cNaN)\n",
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i ? '-' : '+', j ? '-' : '+');
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exit (1);
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}
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mpfr_set_si (x, i ? -1250 : 1250, MPFR_RNDN);
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mpfr_set_nan (y);
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j ? MPFR_SET_NEG (y) : MPFR_SET_POS (y);
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copysign_variant (z, x, y, MPFR_RNDN, k);
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if (i != j)
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mpfr_neg (x, x, MPFR_RNDN);
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if (! mpfr_equal_p (z, x) || mpfr_nanflag_p ())
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{
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printf ("Error in mpfr_copysign (%c1250, %cNaN)\n",
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i ? '-' : '+', j ? '-' : '+');
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exit (1);
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}
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mpfr_set_si (x, i ? -1250 : 1250, MPFR_RNDN);
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mpfr_set_si (y, j ? -1717 : 1717, MPFR_RNDN);
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copysign_variant (z, x, y, MPFR_RNDN, k);
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if (i != j)
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mpfr_neg (x, x, MPFR_RNDN);
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if (! mpfr_equal_p (z, x) || mpfr_nanflag_p ())
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{
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printf ("Error in mpfr_copysign (%c1250, %c1717)\n",
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i ? '-' : '+', j ? '-' : '+');
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exit (1);
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}
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}
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mpfr_clear (x);
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mpfr_clear (y);
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mpfr_clear (z);
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tests_end_mpfr ();
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return 0;
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}
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