67 lines
2.0 KiB
C
67 lines
2.0 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) 2010 Sebastian Pancratz
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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_vec.h"
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#include "fmpz_poly.h"
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void
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_fmpz_poly_pow_small(fmpz * res, const fmpz * poly, slong len, ulong e)
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{
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switch (e)
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{
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case 0:
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fmpz_one(res);
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break;
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case 1:
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_fmpz_vec_set(res, poly, len);
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break;
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case 2:
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_fmpz_poly_sqr(res, poly, len);
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break;
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case 3:
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{
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slong alloc = 2 * len - 1;
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fmpz *t = _fmpz_vec_init(alloc);
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_fmpz_poly_sqr(t, poly, len);
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_fmpz_poly_mul(res, t, alloc, poly, len);
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_fmpz_vec_clear(t, alloc);
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break;
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}
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case 4:
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{
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slong alloc = 2 * len - 1;
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fmpz *t = _fmpz_vec_init(alloc);
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_fmpz_poly_sqr(t, poly, len);
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_fmpz_poly_sqr(res, t, alloc);
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_fmpz_vec_clear(t, alloc);
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break;
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}
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}
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}
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