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Annotation of OpenXM_contrib/gmp/tests/mpf/t-conv.c, Revision 1.1

1.1     ! ohara       1: /* Test mpf_get_str and mpf_set_str.
        !             2:
        !             3: Copyright 1996, 2000, 2001 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 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 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 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 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 <stdlib.h>
        !            24: #include <string.h> /* for strlen */
        !            25:
        !            26: #include "gmp.h"
        !            27: #include "gmp-impl.h"
        !            28: #include "tests.h"
        !            29:
        !            30: #ifndef SIZE
        !            31: #define SIZE 10
        !            32: #endif
        !            33:
        !            34: #ifndef EXPO
        !            35: #define EXPO 20
        !            36: #endif
        !            37:
        !            38: int
        !            39: main (int argc, char **argv)
        !            40: {
        !            41:   mpf_t x, y;
        !            42:   int reps = 20000;
        !            43:   int i;
        !            44:   mp_size_t bprec = 100;
        !            45:   mpf_t d, rerr, max_rerr, limit_rerr;
        !            46:   char *str;
        !            47:   mp_exp_t bexp;
        !            48:   long size, exp;
        !            49:   int base;
        !            50:   char buf[SIZE * BITS_PER_MP_LIMB + 5];
        !            51:
        !            52:   tests_start ();
        !            53:
        !            54:   if (argc > 1)
        !            55:     {
        !            56:       reps = strtol (argv[1], 0, 0);
        !            57:       if (argc > 2)
        !            58:        bprec = strtol (argv[2], 0, 0);
        !            59:     }
        !            60:
        !            61:   mpf_set_default_prec (bprec);
        !            62:
        !            63:   mpf_init_set_ui (limit_rerr, 1);
        !            64:   mpf_div_2exp (limit_rerr, limit_rerr, bprec);
        !            65: #if VERBOSE
        !            66:   mpf_dump (limit_rerr);
        !            67: #endif
        !            68:   mpf_init (rerr);
        !            69:   mpf_init_set_ui (max_rerr, 0);
        !            70:
        !            71:   mpf_init (x);
        !            72:   mpf_init (y);
        !            73:   mpf_init (d);
        !            74:
        !            75:   for (i = 0; i < reps; i++)
        !            76:     {
        !            77:       if (i == 0)
        !            78:         {
        !            79:           /* exercise the special case in get_str for for x==0 */
        !            80:           mpf_set_ui (x, 0L);
        !            81:           base = 10;
        !            82:         }
        !            83:       else
        !            84:         {
        !            85:           size = urandom () % (2 * SIZE) - SIZE;
        !            86:           exp = urandom () % EXPO;
        !            87:           mpf_random2 (x, size, exp);
        !            88:           base = urandom () % 35 + 2;
        !            89:         }
        !            90:
        !            91:       str = mpf_get_str (0, &bexp, base, 0, x);
        !            92:
        !            93:       if (str[0] == '-')
        !            94:        sprintf (buf, "-0.%s@%ld", str + 1, bexp);
        !            95:       else
        !            96:        sprintf (buf, "0.%s@%ld", str, bexp);
        !            97:
        !            98:       mpf_set_str_or_abort (y, buf, -base);
        !            99:       (*__gmp_free_func) (str, strlen (str) + 1);
        !           100:
        !           101:       mpf_reldiff (rerr, x, y);
        !           102:       if (mpf_cmp (rerr, max_rerr) > 0)
        !           103:        {
        !           104:          mpf_set (max_rerr, rerr);
        !           105: #if VERBOSE
        !           106:          mpf_dump (max_rerr);
        !           107: #endif
        !           108:          if (mpf_cmp (rerr, limit_rerr) > 0)
        !           109:            {
        !           110:              printf ("ERROR after %d tests\n", i);
        !           111:              printf ("base = %d\n", base);
        !           112:              printf ("   x = "); mpf_dump (x);
        !           113:              printf ("   y = "); mpf_dump (y);
        !           114:              abort ();
        !           115:            }
        !           116:        }
        !           117:     }
        !           118:
        !           119:   mpf_clear (limit_rerr);
        !           120:   mpf_clear (rerr);
        !           121:   mpf_clear (max_rerr);
        !           122:
        !           123:   mpf_clear (x);
        !           124:   mpf_clear (y);
        !           125:   mpf_clear (d);
        !           126:
        !           127:   tests_end ();
        !           128:   exit (0);
        !           129: }