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Annotation of OpenXM_contrib/gmp/mpfr/tests/tset_f.c, Revision 1.1.1.1

1.1       ohara       1: /* Test file for mpfr_set_f.
                      2:
                      3: Copyright 1999, 2001, 2002 Free Software Foundation, Inc.
                      4:
                      5: This file is part of the MPFR Library.
                      6:
                      7: The MPFR Library is free software; you can redistribute it and/or modify
                      8: it under the terms of the GNU Lesser General Public License as published by
                      9: the Free Software Foundation; either version 2.1 of the License, or (at your
                     10: option) any later version.
                     11:
                     12: The MPFR Library is distributed in the hope that it will be useful, but
                     13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     15: License for more details.
                     16:
                     17: You should have received a copy of the GNU Lesser General Public License
                     18: along with the MPFR Library; see the file COPYING.LIB.  If not, write to
                     19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     20: MA 02111-1307, USA. */
                     21:
                     22: #include <stdio.h>
                     23: #include <stdlib.h>
                     24: #include <time.h>
                     25: #include "gmp.h"
                     26: #include "mpfr.h"
                     27: #include "mpfr-test.h"
                     28:
                     29: int
                     30: main (void)
                     31: {
                     32:   mpfr_t x, u;
                     33:   mpf_t y, z;
                     34:   unsigned long k, pr;
                     35:
                     36:   mpf_init(y);
                     37:   mpf_init(z);
                     38:
                     39:   mpf_set_d (y, 0.0);
                     40:
                     41:   /* check prototype of mpfr_init_set_f */
                     42:   mpfr_init_set_f (x, y, GMP_RNDN);
                     43:   mpfr_set_prec (x, 100);
                     44:   mpfr_set_f (x, y, GMP_RNDN);
                     45:
                     46:   SEED_RAND (time(NULL));
                     47:   mpf_random2(y, 10, 0);
                     48:   mpfr_set_f(x, y, LONG_RAND() & 3);
                     49:
                     50:   /* bug found by Jean-Pierre Merlet */
                     51:   mpfr_set_prec(x, 256);
                     52:   mpf_set_prec(y, 256);
                     53:   mpfr_init2(u, 256);
                     54:   mpfr_set_str(u,
                     55:      "7.f10872b020c49ba5e353f7ced916872b020c49ba5e353f7ced916872b020c498@2",
                     56:      16, GMP_RNDN);
                     57:   mpf_set_str(y, "2033.033", 10);
                     58:   mpfr_set_f(x, y, GMP_RNDN);
                     59:   if (mpfr_cmp(x, u)) {
                     60:     fprintf(stderr, "mpfr_set_f failed for y=2033.033\n"); exit(1);
                     61:   }
                     62:   mpf_set_str(y, "-2033.033", 10);
                     63:   mpfr_set_f(x, y, GMP_RNDN);
                     64:   mpfr_neg(u, u, GMP_RNDN);
                     65:   if (mpfr_cmp(x, u)) {
                     66:     fprintf(stderr, "mpfr_set_f failed for y=-2033.033\n"); exit(1);
                     67:   }
                     68:
                     69:   mpfr_clear(u);
                     70:   mpfr_clear(x);
                     71:
                     72:   for (k = 1; k <= 100000; k++)
                     73:     {
                     74:       pr = 2 + (LONG_RAND()&255);
                     75:       mpf_set_prec (z, pr);
                     76:       mpf_random2 (z, z->_mp_prec, 0);
                     77:       mpfr_init2 (x, pr);
                     78:       mpfr_set_f (x, z, 0);
                     79:       mpfr_clear (x);
                     80:     }
                     81:   mpf_clear (y);
                     82:   mpf_clear (z);
                     83:
                     84:   return 0;
                     85: }