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Annotation of OpenXM_contrib/gmp/mpfr/tests/tlog10.c, Revision 1.1

1.1     ! ohara       1: /* Test file for mpfr_log10.
        !             2:
        !             3: Copyright 2001, 2002 Free Software Foundation.
        !             4: Adapted from tsinh.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 "mpfr.h"
        !            27: #include "mpfr-test.h"
        !            28:
        !            29: #define TEST_FUNCTION mpfr_log10
        !            30: #include "tgeneric.c"
        !            31:
        !            32: int
        !            33: main (int argc, char *argv[])
        !            34: {
        !            35:   mpfr_t x, y;
        !            36:   unsigned int n;
        !            37:
        !            38:   test_generic (2, 100, 100);
        !            39:
        !            40:   /* check log10(10^n)=n */
        !            41:   mpfr_init2 (x, 53);
        !            42:   mpfr_init2 (y, 53);
        !            43:   mpfr_set_ui (x, 1, GMP_RNDN);
        !            44:
        !            45:   for (n=1; n<=15; n++)
        !            46:     {
        !            47:       mpfr_mul_ui (x, x, 10, GMP_RNDN); /* x = 10^n */
        !            48:       mpfr_log10 (y, x, GMP_RNDN);
        !            49:       if (mpfr_get_d1 (y) != (double) n)
        !            50:         {
        !            51:           fprintf (stderr, "log10(10^n) <> n for n=%u\n", n);
        !            52:           exit (1);
        !            53:         }
        !            54:     }
        !            55:
        !            56:   mpfr_clear (x);
        !            57:   mpfr_clear (y);
        !            58:
        !            59:   return 0;
        !            60: }