Return to tconst_euler.c CVS log

Up to [local] / OpenXM_contrib / gmp / mpfr / tests

Annotation of OpenXM_contrib/gmp/mpfr/tests/tconst_euler.c, Revision 1.1

1.1     ! ohara       1: /* Test file for mpfr_const_euler.
        !             2:
        !             3: Copyright 2001 Free Software Foundation.
        !             4:
        !             5: This file is part of the MPFR Library.
        !             6:
        !             7: The MPFR 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 MPFR 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 MPFR 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 "gmp.h"
        !            25: #include "mpfr.h"
        !            26: #include "mpfr-impl.h"
        !            27:
        !            28: int
        !            29: main (int argc, char *argv[])
        !            30: {
        !            31:   mpfr_t gamma, y, z, t;
        !            32:   unsigned int err, prec, yprec, p0 = 2, p1 = 200;
        !            33:   mp_rnd_t rnd;
        !            34:
        !            35:   prec = (argc < 2) ? 53 : atoi(argv[1]);
        !            36:
        !            37:   if (argc > 1)
        !            38:     {
        !            39:       mpfr_init2 (gamma, prec);
        !            40:       mpfr_const_euler (gamma, GMP_RNDN);
        !            41:       printf("gamma="); mpfr_out_str (stdout, 10, 0, gamma, GMP_RNDD);
        !            42:       putchar ('\n');
        !            43:       mpfr_clear (gamma);
        !            44:       return 0;
        !            45:     }
        !            46:
        !            47:   mpfr_init (y);
        !            48:   mpfr_init (z);
        !            49:   mpfr_init (t);
        !            50:
        !            51:   for (prec = p0; prec <= p1; prec++)
        !            52:     {
        !            53:       mpfr_set_prec (z, prec);
        !            54:       mpfr_set_prec (t, prec);
        !            55:       yprec = prec + 10;
        !            56:
        !            57:       for (rnd=0; rnd<4; rnd++)
        !            58:        {
        !            59:          mpfr_set_prec (y, yprec);
        !            60:          mpfr_const_euler (y, rnd);
        !            61:          err = (rnd == GMP_RNDN) ? yprec + 1 : yprec;
        !            62:          if (mpfr_can_round (y, err, rnd, rnd, prec))
        !            63:            {
        !            64:              mpfr_set (t, y, rnd);
        !            65:              mpfr_const_euler (z, rnd);
        !            66:              if (mpfr_cmp (t, z))
        !            67:                {
        !            68:                  printf ("results differ for prec=%u rnd_mode=%s\n", prec,
        !            69:                          mpfr_print_rnd_mode (rnd));
        !            70:                  printf ("   got      ");
        !            71:                  mpfr_out_str (stdout, 2, prec, z, GMP_RNDN);
        !            72:                  putchar ('\n');
        !            73:                  printf ("   expected ");
        !            74:                  mpfr_out_str (stdout, 2, prec, t, GMP_RNDN);
        !            75:                  putchar ('\n');
        !            76:                  printf ("   approximation was ");
        !            77:                  mpfr_print_binary (y);
        !            78:                  putchar ('\n');
        !            79:                  exit (1);
        !            80:                }
        !            81:            }
        !            82:        }
        !            83:     }
        !            84:
        !            85:   mpfr_clear (y);
        !            86:   mpfr_clear (z);
        !            87:   mpfr_clear (t);
        !            88:
        !            89:   return 0;
        !            90: }