1 /* This is the example given and commented on the MPFR web site: 2 * http://www.mpfr.org/sample.html 3 */ 4 5 /* 6 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. 7 Contributed by the AriC and Caramel projects, INRIA. 8 9 This file is part of the GNU MPFR Library. 10 11 The GNU MPFR Library is free software; you can redistribute it and/or modify 12 it under the terms of the GNU Lesser General Public License as published by 13 the Free Software Foundation; either version 3 of the License, or (at your 14 option) any later version. 15 16 The GNU MPFR Library is distributed in the hope that it will be useful, but 17 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 18 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 19 License for more details. 20 21 You should have received a copy of the GNU Lesser General Public License 22 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 23 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 24 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. 25 */ 26 27 #include <stdio.h> 28 29 #include <gmp.h> 30 #include <mpfr.h> 31 32 int main (void) 33 { 34 unsigned int i; 35 mpfr_t s, t, u; 36 37 mpfr_init2 (t, 200); 38 mpfr_set_d (t, 1.0, GMP_RNDD); 39 mpfr_init2 (s, 200); 40 mpfr_set_d (s, 1.0, GMP_RNDD); 41 mpfr_init2 (u, 200); 42 for (i = 1; i <= 100; i++) 43 { 44 mpfr_mul_ui (t, t, i, GMP_RNDU); 45 mpfr_set_d (u, 1.0, GMP_RNDD); 46 mpfr_div (u, u, t, GMP_RNDD); 47 mpfr_add (s, s, u, GMP_RNDD); 48 } 49 printf ("Sum is "); 50 mpfr_out_str (stdout, 10, 0, s, GMP_RNDD); 51 putchar ('\n'); 52 mpfr_clear (s); 53 mpfr_clear (t); 54 mpfr_clear (u); 55 return 0; 56 } 57
