57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
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/*=============================================================================
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This file is part of FLINT.
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FLINT 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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FLINT 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 FLINT; 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) 2008, 2009 William Hart
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******************************************************************************/
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#include <gmp.h>
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#include "flint.h"
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#include "fmpz.h"
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#include "fmpz_poly.h"
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void
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fmpz_poly_scalar_mul_ui(fmpz_poly_t poly1, const fmpz_poly_t poly2, ulong x)
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{
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slong i;
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/* Either scalar or input poly is zero */
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if ((x == 0) || (poly2->length == 0))
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{
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fmpz_poly_zero(poly1);
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return;
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}
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/* Special case, multiply by 1 */
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if (x == 1)
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{
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fmpz_poly_set(poly1, poly2);
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return;
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}
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fmpz_poly_fit_length(poly1, poly2->length);
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for (i = 0; i < poly2->length; i++)
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fmpz_mul_ui(poly1->coeffs + i, poly2->coeffs + i, x);
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_fmpz_poly_set_length(poly1, poly2->length);
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}
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