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Annotation of OpenXM_contrib/gmp/mpfr/tests/texp2.c, Revision 1.1.1.1

1.1       ohara       1: /* Test file for mpfr_exp2.
                      2:
                      3: Copyright 2001 Free Software Foundation.
                      4: Adapted from tarctan.c.
                      5:
                      6: This file is part of the MPFR Library.
                      7:
                      8: The MPFR Library is free software; you can redistribute it and/or modify
                      9: it under the terms of the GNU Lesser General Public License as published by
                     10: the Free Software Foundation; either version 2.1 of the License, or (at your
                     11: option) any later version.
                     12:
                     13: The MPFR Library is distributed in the hope that it will be useful, but
                     14: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     15: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     16: License for more details.
                     17:
                     18: You should have received a copy of the GNU Lesser General Public License
                     19: along with the MPFR Library; see the file COPYING.LIB.  If not, write to
                     20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     21: MA 02111-1307, USA. */
                     22:
                     23: #include <stdio.h>
                     24: #include <stdlib.h>
                     25: #include "gmp.h"
                     26: #include "gmp-impl.h"
                     27: #include "mpfr.h"
                     28: #include "mpfr-impl.h"
                     29: #include "mpfr-test.h"
                     30:
                     31: #define TEST_FUNCTION mpfr_exp2
                     32: #include "tgeneric.c"
                     33:
                     34: int
                     35: main (int argc, char *argv[])
                     36: {
                     37:   mpfr_t x, y;
                     38:
                     39:   mpfr_init (x);
                     40:   mpfr_init (y);
                     41:
                     42:   mpfr_set_prec (x, 53);
                     43:   mpfr_set_prec (y, 53);
                     44:   mpfr_set_d (x, -1683977482443233.0 / 2199023255552.0, GMP_RNDN);
                     45:   mpfr_exp2 (y, x, GMP_RNDN);
                     46:   if (mpfr_get_d1 (y) != 2.991959870867646566478e-231)
                     47:     {
                     48:       fprintf (stderr, "Error for x=-1683977482443233/2^41\n");
                     49:       exit (1);
                     50:     }
                     51:
                     52:   MPFR_CLEAR_NAN(x);
                     53:   MPFR_SET_INF(x);
                     54:   MPFR_SET_POS(x);
                     55:   mpfr_exp2 (y, x, GMP_RNDN);
                     56:   if(!MPFR_IS_INF(y))
                     57:     {
                     58:       fprintf (stderr, "evaluation of function in INF does not return INF\n");
                     59:       exit (1);
                     60:     }
                     61:
                     62:   MPFR_CHANGE_SIGN(x);
                     63:   mpfr_exp2 (y, x, GMP_RNDN);
                     64:   if(!MPFR_IS_ZERO(y))
                     65:     {
                     66:       fprintf (stderr, "evaluation of function in -INF does not return 0\n");
                     67:       exit (1);
                     68:     }
                     69:
                     70:   MPFR_SET_NAN(x);
                     71:   mpfr_exp2 (y, x, GMP_RNDN);
                     72:   if(!MPFR_IS_NAN(y))
                     73:     {
                     74:       fprintf (stderr, "evaluation of function in NaN does not return NaN\n");
                     75:       exit (1);
                     76:     }
                     77:
                     78:   test_generic (2, 100, 100);
                     79:
                     80:   mpfr_clear (x);
                     81:   mpfr_clear (y);
                     82:
                     83:   return 0;
                     84: }