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https://github.com/vale981/arb
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33 lines
891 B
C
33 lines
891 B
C
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/*
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Copyright (C) 2016 Fredrik Johansson
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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 it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "acb_poly.h"
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void
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acb_poly_sub_series(acb_poly_t res, const acb_poly_t poly1,
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const acb_poly_t poly2, slong len, slong prec)
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{
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slong len1, len2;
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len1 = poly1->length;
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len2 = poly2->length;
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len1 = FLINT_MIN(len1, len);
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len2 = FLINT_MIN(len2, len);
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len = FLINT_MAX(len1, len2);
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acb_poly_fit_length(res, len);
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_acb_poly_sub(res->coeffs, poly1->coeffs, len1, poly2->coeffs, len2, prec);
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_acb_poly_set_length(res, len);
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_acb_poly_normalise(res);
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}
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