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