1 /*
2 Copyright (C) 2010 William Hart
3
4 This file is part of FLINT.
5
6 FLINT is free software: you can redistribute it and/or modify it under
7 the terms of the GNU Lesser General Public License (LGPL) as published
8 by the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version. See <http://www.gnu.org/licenses/>.
10 */
11
12 #include <stdlib.h>
13 #include <gmp.h>
14 #include <mpfr.h>
15 #include "flint.h"
16 #include "mpfr_vec.h"
17
18 void
_mpfr_vec_scalar_product(mpfr_t res,const flint_mpfr * vec1,const flint_mpfr * vec2,slong length)19 _mpfr_vec_scalar_product(mpfr_t res, const flint_mpfr * vec1,
20 const flint_mpfr * vec2, slong length)
21 {
22 slong i;
23 mpfr_t tmp;
24 mpfr_init(tmp);
25
26 mpfr_mul(res, vec1, vec2, GMP_RNDN);
27 for (i = 1; i < length; i++)
28 {
29 mpfr_mul(tmp, vec1 + i, vec2 + i, GMP_RNDN);
30 mpfr_add(res, res, tmp, GMP_RNDN);
31 }
32
33 mpfr_clear(tmp);
34 }
35