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