mirror of https://github.com/macssh/macssh.git
50 lines
1.4 KiB
C
Executable File
50 lines
1.4 KiB
C
Executable File
/* Test file for mpfr_mul_2exp.
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Copyright (C) 1999 PolKA project, Inria Lorraine and Loria
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This file is part of the MPFR Library.
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The MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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The MPFR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with the MPFR Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "gmp.h"
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#include "mpfr.h"
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/* checks that x*y gives the same results in double
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and with mpfr with 53 bits of precision */
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int
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main(argc,argv) int argc; char *argv[];
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{
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double x, z; mpfr_t w;
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mpfr_init2(w, 53);
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srand48(time(NULL));
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x = drand48();
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mpfr_set_d(w, x, 0);
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mpfr_mul_2exp(w, w, 10, GMP_RNDZ);
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if (x != (z = mpfr_get_d(w)/1024))
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{
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fprintf(stderr, "%f != %f\n", x, z);
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exit (1);
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}
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exit (0);
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}
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