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b58ddff026
* merged mpfr 3.0.0 and gmp 5.0.1 in buildtools trunk git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@37378 a95241bf-73f2-0310-859d-f6bbb57e9c96
139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/* Test file for mpfr_d_div
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Copyright 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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Contributed by the Arenaire and Cacao 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 <float.h>
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#include "mpfr-test.h"
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#if MPFR_VERSION >= MPFR_VERSION_NUM(2,4,0)
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static void
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check_nans (void)
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{
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mpfr_t x, y;
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int inexact;
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mpfr_init2 (x, 123);
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mpfr_init2 (y, 123);
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/* 1.0 / nan is nan */
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mpfr_set_nan (x);
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mpfr_clear_flags ();
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inexact = mpfr_d_div (y, 1.0, x, MPFR_RNDN);
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MPFR_ASSERTN (inexact == 0);
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MPFR_ASSERTN ((__gmpfr_flags ^ MPFR_FLAGS_NAN) == 0);
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MPFR_ASSERTN (mpfr_nan_p (y));
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/* 1.0 / +inf == +0 */
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mpfr_set_inf (x, 1);
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mpfr_clear_flags ();
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inexact = mpfr_d_div (y, 1.0, x, MPFR_RNDN);
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MPFR_ASSERTN (inexact == 0);
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MPFR_ASSERTN (__gmpfr_flags == 0);
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MPFR_ASSERTN (mpfr_zero_p (y));
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MPFR_ASSERTN (MPFR_IS_POS (y));
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/* 1.0 / -inf == -0 */
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mpfr_set_inf (x, -1);
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mpfr_clear_flags ();
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inexact = mpfr_d_div (y, 1.0, x, MPFR_RNDN);
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MPFR_ASSERTN (inexact == 0);
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MPFR_ASSERTN (__gmpfr_flags == 0);
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MPFR_ASSERTN (mpfr_zero_p (y));
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MPFR_ASSERTN (MPFR_IS_NEG (y));
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/* 1.0 / 0 == +inf */
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mpfr_set_d (x, 0.0, MPFR_RNDN);
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mpfr_clear_flags ();
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inexact = mpfr_d_div (y, 1.0, x, MPFR_RNDN);
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MPFR_ASSERTN (inexact == 0);
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MPFR_ASSERTN (__gmpfr_flags == 0);
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MPFR_ASSERTN (mpfr_inf_p (y));
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MPFR_ASSERTN (MPFR_IS_POS (y));
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mpfr_clear (x);
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mpfr_clear (y);
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}
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#define TEST_FUNCTION mpfr_d_sub
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#define DOUBLE_ARG1
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#define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 1, RANDS)
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#include "tgeneric.c"
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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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double d;
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int inexact;
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tests_start_mpfr ();
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/* check with enough precision */
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mpfr_init2 (x, IEEE_DBL_MANT_DIG);
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mpfr_init2 (y, IEEE_DBL_MANT_DIG);
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mpfr_init2 (z, IEEE_DBL_MANT_DIG);
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mpfr_set_str (y, "4096", 10, MPFR_RNDN);
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d = 0.125;
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mpfr_clear_flags ();
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inexact = mpfr_d_div (x, d, y, MPFR_RNDN);
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if (inexact != 0)
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{
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printf ("Inexact flag error in mpfr_d_div\n");
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exit (1);
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}
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mpfr_set_str (z, " 0.000030517578125", 10, MPFR_RNDN);
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if (mpfr_cmp (z, x))
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{
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printf ("Error in mpfr_d_div (");
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mpfr_out_str (stdout, 10, 0, y, MPFR_RNDN);
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printf (" + %.20g)\nexpected ", d);
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mpfr_out_str (stdout, 10, 0, z, MPFR_RNDN);
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printf ("\ngot ");
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mpfr_out_str (stdout, 10, 0, x, MPFR_RNDN);
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printf ("\n");
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exit (1);
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}
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mpfr_clears (x, y, z, (mpfr_ptr) 0);
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check_nans ();
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test_generic (2, 1000, 100);
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tests_end_mpfr ();
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return 0;
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}
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#else
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int
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main (void)
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{
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printf ("Warning! Test disabled for this MPFR version.\n");
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return 0;
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}
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#endif
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