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44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/* mpc_sum -- Add an array of complex numbers.
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Copyright (C) 2018 INRIA
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This file is part of GNU MPC.
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GNU MPC is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see http://www.gnu.org/licenses/ .
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*/
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#include <stdio.h> /* for MPC_ASSERT */
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#include "mpc-impl.h"
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int
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mpc_sum (mpc_ptr sum, const mpc_ptr *z, unsigned long n, mpc_rnd_t rnd)
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{
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int inex_re, inex_im;
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mpfr_ptr *t;
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unsigned long i;
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t = (mpfr_ptr *) malloc (n * sizeof(mpfr_t));
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/* warning: when n=0, malloc() might return NULL (e.g., gcc119) */
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MPC_ASSERT(n == 0 || t != NULL);
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for (i = 0; i < n; i++)
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t[i] = mpc_realref (z[i]);
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inex_re = mpfr_sum (mpc_realref (sum), t, n, MPC_RND_RE (rnd));
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for (i = 0; i < n; i++)
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t[i] = mpc_imagref (z[i]);
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inex_im = mpfr_sum (mpc_imagref (sum), t, n, MPC_RND_IM (rnd));
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free (t);
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return MPC_INEX(inex_re, inex_im);
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}
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