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

1.1     ! ohara       1: /* Test mpf_get_d and mpf_set_d.
        !             2:
        !             3:    Copyright 1996, 1999, 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 <stdlib.h>
        !            23: #include "gmp.h"
        !            24: #include "tests.h"
        !            25:
        !            26: #if defined (__vax__)
        !            27: #define LOW_BOUND 1e-38
        !            28: #define HIGH_BOUND 8e37
        !            29: #endif
        !            30:
        !            31: #if defined (_CRAY) && ! defined (_CRAYIEEE)
        !            32: /* The range varies mysteriously between Cray version.  On an SV1,
        !            33:    the range seem to be 1e-600..1e603, but a cfp (non-ieee) T90
        !            34:    has a much smaller range of 1e-240..1e240.  */
        !            35: #define LOW_BOUND 1e-240
        !            36: #define HIGH_BOUND 1e240
        !            37: #endif
        !            38:
        !            39: #if ! defined (LOW_BOUND)
        !            40: #define LOW_BOUND 1e-300
        !            41: #define HIGH_BOUND 1e300
        !            42: #endif
        !            43:
        !            44: int
        !            45: main (int argc, char **argv)
        !            46: {
        !            47:   double d, e, r;
        !            48:   mpf_t u, v;
        !            49:
        !            50:   tests_start ();
        !            51:   mpf_init (u);
        !            52:   mpf_init (v);
        !            53:
        !            54:   mpf_set_d (u, LOW_BOUND);
        !            55:   for (d = 2.0 * LOW_BOUND; d < HIGH_BOUND; d *= 1.01)
        !            56:     {
        !            57:       mpf_set_d (v, d);
        !            58:       if (mpf_cmp (u, v) >= 0)
        !            59:        abort ();
        !            60:       e = mpf_get_d (v);
        !            61:       r = e/d;
        !            62:       if (r < 0.99999999999999 || r > 1.00000000000001)
        !            63:        abort ();
        !            64:       mpf_set (u, v);
        !            65:     }
        !            66:
        !            67:   mpf_clear (u);
        !            68:   mpf_clear (v);
        !            69:
        !            70:   tests_end ();
        !            71:   exit (0);
        !            72: }