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/*
Copyright (C) 2016 William Hart
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "fmpz.h"
#include "fmpz_poly.h"
double _fmpz_poly_evaluate_horner_d(const fmpz * poly, slong n, double d)
{
slong i;
double ans;
ans = fmpz_get_d(poly + n - 1);
for (i = n - 2; i >= 0L; i--)
{
ans *= d;
ans += fmpz_get_d(poly + i);
}
return ans;
}
double fmpz_poly_evaluate_horner_d(const fmpz_poly_t poly, double d)
{
if (poly->length == 0)
return 0.0;
return _fmpz_poly_evaluate_horner_d(poly->coeffs, poly->length, d);
}