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https://github.com/vale981/arb
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59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/*=============================================================================
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This file is part of ARB.
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ARB is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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ARB is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ARB; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2012 Fredrik Johansson
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******************************************************************************/
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#include "fmprb_poly.h"
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void _fmprb_poly_mul(fmprb_struct * C,
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const fmprb_struct * A, long lenA,
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const fmprb_struct * B, long lenB, long prec)
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{
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_fmprb_poly_mullow(C, A, lenA, B, lenB, lenA + lenB - 1, prec);
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}
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void
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fmprb_poly_mul(fmprb_poly_t res, const fmprb_poly_t poly1,
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const fmprb_poly_t poly2, long prec)
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{
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long len, len1, len2;
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len1 = poly1->length;
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len2 = poly2->length;
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/* TODO: should check for inf/nan */
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if (len1 == 0 || len2 == 0)
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{
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fmprb_poly_zero(res);
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return;
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}
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len = len1 + len2 - 1;
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fmprb_poly_fit_length(res, len);
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_fmprb_poly_mul(res->coeffs, poly1->coeffs, poly1->length,
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poly2->coeffs, poly2->length, prec);
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_fmprb_poly_set_length(res, len);
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}
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