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Annotation of OpenXM_contrib/gmp/mpf/tests/t-sqrt.c, Revision 1.1.1.1

1.1       maekawa     1: /* Test mpf_sqrt, mpf_mul.
                      2:
                      3: Copyright (C) 1996 Free Software Foundation, Inc.
                      4:
                      5: This file is part of the GNU MP Library.
                      6:
                      7: The GNU MP Library is free software; you can redistribute it and/or modify
                      8: it under the terms of the GNU Library General Public License as published by
                      9: the Free Software Foundation; either version 2 of the License, or (at your
                     10: option) any later version.
                     11:
                     12: The GNU MP 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 Library General Public
                     15: License for more details.
                     16:
                     17: You should have received a copy of the GNU Library General Public License
                     18: along with the GNU MP 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 "gmp.h"
                     24: #include "gmp-impl.h"
                     25: #include "urandom.h"
                     26:
                     27: #ifndef SIZE
                     28: #define SIZE 16
                     29: #endif
                     30:
                     31: main (argc, argv)
                     32:      int argc;
                     33:      char **argv;
                     34: {
                     35:   mp_size_t size;
                     36:   mp_exp_t exp;
                     37:   int reps = 100000;
                     38:   int i;
                     39:   mpf_t x, y, y2;
                     40:   mp_size_t bprec = 100;
                     41:   mpf_t rerr, max_rerr, limit_rerr;
                     42:
                     43:   if (argc > 1)
                     44:     {
                     45:       reps = strtol (argv[1], 0, 0);
                     46:       if (argc > 2)
                     47:        bprec = strtol (argv[2], 0, 0);
                     48:     }
                     49:
                     50:   mpf_set_default_prec (bprec);
                     51:
                     52:   mpf_init_set_ui (limit_rerr, 1);
                     53:   mpf_div_2exp (limit_rerr, limit_rerr, bprec);
                     54: #if VERBOSE
                     55:   mpf_dump (limit_rerr);
                     56: #endif
                     57:   mpf_init (rerr);
                     58:   mpf_init_set_ui (max_rerr, 0);
                     59:
                     60:   mpf_init (x);
                     61:   mpf_init (y);
                     62:   mpf_init (y2);
                     63:   for (i = 0; i < reps; i++)
                     64:     {
                     65:       size = urandom () % SIZE;
                     66:       exp = urandom () % SIZE;
                     67:       mpf_random2 (x, size, exp);
                     68:
                     69:       mpf_sqrt (y, x);
                     70:       mpf_mul (y2, y, y);
                     71:
                     72:       mpf_reldiff (rerr, x, y2);
                     73:       if (mpf_cmp (rerr, max_rerr) > 0)
                     74:        {
                     75:          mpf_set (max_rerr, rerr);
                     76: #if VERBOSE
                     77:          mpf_dump (max_rerr);
                     78: #endif
                     79:          if (mpf_cmp (rerr, limit_rerr) > 0)
                     80:            {
                     81:              printf ("ERROR after %d tests\n", i);
                     82:              printf ("   x = "); mpf_dump (x);
                     83:              printf ("   y = "); mpf_dump (y);
                     84:              printf ("  y2 = "); mpf_dump (y2);
                     85:              abort ();
                     86:            }
                     87:        }
                     88:     }
                     89:
                     90:   exit (0);
                     91: }
                     92:
                     93: oo (x)
                     94:      mpf_t x;
                     95: {
                     96:   mp_size_t i;
                     97:   printf (" exp = %ld\n", x->_mp_exp);
                     98:   printf ("size = %d\n", x->_mp_size);
                     99:   for (i = ABS (x->_mp_size) - 1; i >= 0; i--)
                    100:     printf ("%08lX ", x->_mp_d[i]);
                    101:   printf ("\n");
                    102:   mpf_dump (x);
                    103: }