| /* This is the example given and commented on the MPFR web site: |
| * http://www.mpfr.org/sample.html |
| */ |
| |
| /* |
| Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
| Contributed by the AriC and Caramel projects, INRIA. |
| |
| This file is part of the GNU MPFR Library. |
| |
| The GNU MPFR Library is free software; you can redistribute it and/or modify |
| it under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or (at your |
| option) any later version. |
| |
| The GNU 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 Lesser General Public |
| License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see |
| http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., |
| 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. |
| */ |
| |
| #include <stdio.h> |
| |
| #include <gmp.h> |
| #include <mpfr.h> |
| |
| int main (void) |
| { |
| unsigned int i; |
| mpfr_t s, t, u; |
| |
| mpfr_init2 (t, 200); |
| mpfr_set_d (t, 1.0, MPFR_RNDD); |
| mpfr_init2 (s, 200); |
| mpfr_set_d (s, 1.0, MPFR_RNDD); |
| mpfr_init2 (u, 200); |
| for (i = 1; i <= 100; i++) |
| { |
| mpfr_mul_ui (t, t, i, MPFR_RNDU); |
| mpfr_set_d (u, 1.0, MPFR_RNDD); |
| mpfr_div (u, u, t, MPFR_RNDD); |
| mpfr_add (s, s, u, MPFR_RNDD); |
| } |
| printf ("Sum is "); |
| mpfr_out_str (stdout, 10, 0, s, MPFR_RNDD); |
| putchar ('\n'); |
| mpfr_clear (s); |
| mpfr_clear (t); |
| mpfr_clear (u); |
| return 0; |
| } |