mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
63 lines
2 KiB
C
63 lines
2 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) 2013 Fredrik Johansson
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******************************************************************************/
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#include "arb_poly.h"
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void
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_arb_poly_binomial_transform(arb_ptr b, arb_srcptr a, slong alen, slong len, slong prec)
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{
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if (alen < 10 || len < 10)
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_arb_poly_binomial_transform_basecase(b, a, alen, len, prec);
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else
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_arb_poly_binomial_transform_convolution(b, a, alen, len, prec);
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}
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void
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arb_poly_binomial_transform(arb_poly_t b, const arb_poly_t a, slong len, slong prec)
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{
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if (len == 0 || a->length == 0)
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{
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arb_poly_zero(b);
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return;
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}
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if (b == a)
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{
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arb_poly_t c;
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arb_poly_init2(c, len);
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_arb_poly_binomial_transform(c->coeffs, a->coeffs, a->length, len, prec);
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arb_poly_swap(b, c);
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arb_poly_clear(c);
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}
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else
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{
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arb_poly_fit_length(b, len);
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_arb_poly_binomial_transform(b->coeffs, a->coeffs, a->length, len, prec);
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}
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_arb_poly_set_length(b, len);
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_arb_poly_normalise(b);
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}
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