mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
66 lines
2 KiB
C
66 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) 2015 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_cot_pi_series(arb_ptr g, arb_srcptr h, slong hlen, slong len, slong prec)
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{
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hlen = FLINT_MIN(hlen, len);
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if (hlen == 1)
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{
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arb_cot_pi(g, h, prec);
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_arb_vec_zero(g + 1, len - 1);
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}
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else
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{
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arb_ptr t, u;
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t = _arb_vec_init(len);
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u = _arb_vec_init(len);
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_arb_poly_sin_cos_pi_series(t, u, h, hlen, len, prec);
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_arb_poly_div_series(g, u, len, t, len, len, prec);
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_arb_vec_clear(t, len);
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_arb_vec_clear(u, len);
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}
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}
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void
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arb_poly_cot_pi_series(arb_poly_t res, const arb_poly_t f, slong len, slong prec)
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{
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arb_poly_fit_length(res, len);
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if (f->length == 0 || len == 0)
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_arb_vec_indeterminate(res->coeffs, len);
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else
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_arb_poly_cot_pi_series(res->coeffs, f->coeffs, f->length, len, prec);
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_arb_poly_set_length(res, len);
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_arb_poly_normalise(res);
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}
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