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https://github.com/vale981/arb
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75 lines
2.1 KiB
C
75 lines
2.1 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_pow_ui(arb_ptr res, arb_srcptr f, long flen, ulong exp, long prec)
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{
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_arb_poly_pow_ui_trunc_binexp(res, f, flen, exp, exp * (flen - 1) + 1, prec);
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}
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void
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arb_poly_pow_ui(arb_poly_t res,
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const arb_poly_t poly, ulong exp, long prec)
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{
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long flen, rlen;
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flen = poly->length;
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if (exp == 0)
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{
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arb_poly_one(res);
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}
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else if (flen == 0)
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{
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arb_poly_zero(res);
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}
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else
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{
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rlen = exp * (flen - 1) + 1;
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if (res != poly)
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{
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arb_poly_fit_length(res, rlen);
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_arb_poly_pow_ui(res->coeffs,
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poly->coeffs, flen, exp, prec);
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_arb_poly_set_length(res, rlen);
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_arb_poly_normalise(res);
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}
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else
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{
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arb_poly_t t;
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arb_poly_init2(t, rlen);
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_arb_poly_pow_ui(t->coeffs,
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poly->coeffs, flen, exp, prec);
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_arb_poly_set_length(t, rlen);
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_arb_poly_normalise(t);
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arb_poly_swap(res, t);
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arb_poly_clear(t);
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}
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}
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}
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