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/* This is the example given and commented on the MPFR web site: |
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* https://www.mpfr.org/sample.html |
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*/ |
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|
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/* |
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Copyright 1999-2004, 2006-2020 Free Software Foundation, Inc. |
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Contributed by the AriC and Caramba projects, INRIA. |
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|
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This file is part of the GNU MPFR Library. |
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|
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The GNU MPFR Library is free software; you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License as published by |
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the Free Software Foundation; either version 3 of the License, or (at your |
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option) any later version. |
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|
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The GNU 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 Lesser General Public |
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License for more details. |
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|
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You should have received a copy of the GNU Lesser General Public License |
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along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see |
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https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., |
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. |
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*/ |
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|
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#include <stdio.h> |
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|
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#include <gmp.h> |
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#include <mpfr.h> |
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|
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int main (void) |
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{ |
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unsigned int i; |
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mpfr_t s, t, u; |
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|
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mpfr_init2 (t, 200); |
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mpfr_set_d (t, 1.0, MPFR_RNDD); |
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mpfr_init2 (s, 200); |
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mpfr_set_d (s, 1.0, MPFR_RNDD); |
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mpfr_init2 (u, 200); |
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for (i = 1; i <= 100; i++) |
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{ |
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mpfr_mul_ui (t, t, i, MPFR_RNDU); |
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mpfr_set_d (u, 1.0, MPFR_RNDD); |
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mpfr_div (u, u, t, MPFR_RNDD); |
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mpfr_add (s, s, u, MPFR_RNDD); |
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} |
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printf ("Sum is "); |
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mpfr_out_str (stdout, 10, 0, s, MPFR_RNDD); |
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putchar ('\n'); |
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mpfr_clear (s); |
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mpfr_clear (t); |
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mpfr_clear (u); |
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mpfr_free_cache (); |
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return 0; |
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} |
