diff options
Diffstat (limited to 'pi.c')
| -rw-r--r-- | pi.c | 35 |
1 files changed, 28 insertions, 7 deletions
@@ -1,3 +1,31 @@ +/* mpfr_pi -- compute Pi + +Copyright (C) 1999 PolKA project, Inria Lorraine and Loria + +This file is part of the MPFR Library. + +The MPFR Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Library General Public License as published by +the Free Software Foundation; either version 2 of the License, or (at your +option) any later version. + +The MPFR Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public +License for more details. + +You should have received a copy of the GNU Library General Public License +along with the MPFR Library; see the file COPYING.LIB. If not, write to +the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +MA 02111-1307, USA. */ + +#include <stdio.h> +#include <math.h> +#include "gmp.h" +#include "gmp-impl.h" +#include "longlong.h" +#include "mpfr.h" + /* Set x to the value of Pi to precision PREC(x) rounded to direction rnd_mode. Use the formula giving the binary representation of Pi found by Simon Plouffe @@ -28,13 +56,6 @@ S(N)-S'(N) <= sum(1, n=0..N-1) = N so Pi*16^N-S'(N) <= N+1 (as 1/4/N^2 < 1) */ -#include <stdio.h> -#include <math.h> -#include "gmp.h" -#include "gmp-impl.h" -#include "longlong.h" -#include "mpfr.h" - mpfr_t __mpfr_pi; /* stored value of Pi */ int __mpfr_pi_prec=0; /* precision of stored value */ char __mpfr_pi_rnd; /* rounding mode of stored value */ |