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

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: }