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Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpf/tests/t-conv.c, Revision 1.1.1.1

1.1       takayama    1: /* Test mpf_get_str and mpf_set_str.
                      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 10
                     29: #endif
                     30:
                     31: #ifndef EXPO
                     32: #define EXPO 20
                     33: #endif
                     34:
                     35: main (argc, argv)
                     36:      int argc;
                     37:      char **argv;
                     38: {
                     39:   mpf_t x, y;
                     40:   int reps = 20000;
                     41:   int i;
                     42:   mp_size_t bprec = 100;
                     43:   mpf_t d, rerr, max_rerr, limit_rerr;
                     44:   char *str;
                     45:   long bexp;
                     46:   long size, exp;
                     47:   int base;
                     48:   char buf[SIZE * BITS_PER_MP_LIMB + 5];
                     49:
                     50:   if (argc > 1)
                     51:     {
                     52:       reps = strtol (argv[1], 0, 0);
                     53:       if (argc > 2)
                     54:        bprec = strtol (argv[2], 0, 0);
                     55:     }
                     56:
                     57:   mpf_set_default_prec (bprec);
                     58:
                     59:   mpf_init_set_ui (limit_rerr, 1);
                     60:   mpf_div_2exp (limit_rerr, limit_rerr, bprec);
                     61: #if VERBOSE
                     62:   mpf_dump (limit_rerr);
                     63: #endif
                     64:   mpf_init (rerr);
                     65:   mpf_init_set_ui (max_rerr, 0);
                     66:
                     67:   mpf_init (x);
                     68:   mpf_init (y);
                     69:   mpf_init (d);
                     70:
                     71:   for (i = 0; i < reps; i++)
                     72:     {
                     73:       size = urandom () % (2 * SIZE) - SIZE;
                     74:       exp = urandom () % EXPO;
                     75:       mpf_random2 (x, size, exp);
                     76:
                     77:       base = urandom () % 35 + 2;
                     78:
                     79:       str = mpf_get_str (0, &bexp, base, 0, x);
                     80:
                     81:       if (str[0] == '-')
                     82:        sprintf (buf, "-0.%s@%ld", str + 1, bexp);
                     83:       else
                     84:        sprintf (buf, "0.%s@%ld", str, bexp);
                     85:
                     86:       mpf_set_str (y, buf, -base);
                     87:       free (str);
                     88:
                     89:       mpf_reldiff (rerr, x, y);
                     90:       if (mpf_cmp (rerr, max_rerr) > 0)
                     91:        {
                     92:          mpf_set (max_rerr, rerr);
                     93: #if VERBOSE
                     94:          mpf_dump (max_rerr);
                     95: #endif
                     96:          if (mpf_cmp (rerr, limit_rerr) > 0)
                     97:            {
                     98:              printf ("ERROR after %d tests\n", i);
                     99:              printf ("base = %d\n", base);
                    100:              printf ("   x = "); mpf_dump (x);
                    101:              printf ("   y = "); mpf_dump (y);
                    102:              abort ();
                    103:            }
                    104:        }
                    105:     }
                    106:
                    107:   exit (0);
                    108: }
                    109:
                    110: oo (x)
                    111:      mpf_t x;
                    112: {
                    113:   int i;
                    114:   printf (" exp = %ld\n", x->_mp_exp);
                    115:   printf ("size = %d\n", x->_mp_size);
                    116:   for (i = ABS (x->_mp_size) - 1; i >= 0; i--)
                    117:     printf ("%08lX ", x->_mp_d[i]);
                    118:   printf ("\n");
                    119:   mpf_dump (x);
                    120: }