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99d8158635
git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@29042 a95241bf-73f2-0310-859d-f6bbb57e9c96
115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/* Test file for mpfr_const_pi.
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Copyright 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007 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 MPFR Library.
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The 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 2.1 of the License, or (at your
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option) any later version.
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The 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 MPFR Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin St, 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 "mpfr-test.h"
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/* tconst_pi [prec] [rnd] [0 = no print] */
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static void
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check_large (void)
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{
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mpfr_t x, y, z;
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mpfr_init2 (x, 20000);
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mpfr_init2 (y, 21000);
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mpfr_init2 (z, 11791);
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/* The algo failed to round for p=11791. */
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(mpfr_const_pi) (z, GMP_RNDU);
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mpfr_const_pi (x, GMP_RNDN); /* First one ! */
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mpfr_const_pi (y, GMP_RNDN); /* Then the other - cache - */
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mpfr_prec_round (y, 20000, GMP_RNDN);
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if (mpfr_cmp (x, y)) {
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printf ("const_pi: error for large prec (%d)\n", 1);
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exit (1);
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}
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mpfr_prec_round (y, 11791, GMP_RNDU);
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if (mpfr_cmp (z, y)) {
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printf ("const_pi: error for large prec (%d)\n", 2);
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exit (1);
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}
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/* a worst-case to exercise recomputation */
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if (MPFR_PREC_MAX > 33440) {
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mpfr_set_prec (x, 33440);
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mpfr_const_pi (x, GMP_RNDZ);
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}
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mpfr_clears (x, y, z, (void *) 0);
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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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mpfr_t x;
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mp_prec_t p;
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mp_rnd_t rnd;
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tests_start_mpfr ();
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p = 53;
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if (argc > 1)
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{
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long a = atol (argv[1]);
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if (a >= MPFR_PREC_MIN && a <= MPFR_PREC_MAX)
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p = a;
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}
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rnd = (argc > 2) ? (mp_rnd_t) atoi(argv[2]) : GMP_RNDZ;
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mpfr_init2 (x, p);
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mpfr_const_pi (x, rnd);
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if (argc >= 2)
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{
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if (argc < 4 || atoi (argv[3]) != 0)
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{
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printf ("Pi=");
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mpfr_out_str (stdout, 10, 0, x, rnd);
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puts ("");
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}
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}
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else if (mpfr_cmp_str1 (x, "3.141592653589793116") )
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{
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printf ("mpfr_const_pi failed for prec=53\n");
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mpfr_out_str (stdout, 10, 0, x, GMP_RNDN); putchar('\n');
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exit (1);
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}
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mpfr_set_prec (x, 32);
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mpfr_const_pi (x, GMP_RNDN);
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if (mpfr_cmp_str1 (x, "3.141592653468251") )
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{
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printf ("mpfr_const_pi failed for prec=32\n");
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exit (1);
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}
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mpfr_clear (x);
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check_large();
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tests_end_mpfr ();
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return 0;
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}
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