mirror of https://github.com/macssh/macssh.git
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
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/* Test file for mpfr_log2.
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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 <stdlib.h>
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#include "gmp.h"
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#include "mpfr.h"
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/* tlog2 [prec] [rnd] [0 = no print] */
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int main(argc, argv) int argc; char *argv[];
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{
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mpfr_t x; int p; unsigned char rnd;
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p = (argc>1) ? atoi(argv[1]) : 53;
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rnd = (argc>2) ? atoi(argv[2]) : GMP_RNDZ;
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mpfr_init2(x, p);
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mpfr_log2(x, rnd);
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if (argc>=2) {
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printf("log(2)="); mpfr_out_str(stdout, 10, 0, x, rnd); putchar('\n');
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}
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else if (mpfr_get_d(x) != 6.9314718055994530941e-1) {
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fprintf(stderr, "mpfr_log2 failed for prec=53\n"); exit(1);
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}
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mpfr_clear(x);
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exit (0);
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}
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