arb/acb_poly/majorant.c
2016-04-26 17:20:05 +02:00

33 lines
886 B
C

/*
Copyright (C) 2015 Fredrik Johansson
This file is part of Arb.
Arb 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 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "acb_poly.h"
void
_acb_poly_majorant(arb_ptr res, acb_srcptr vec, slong len, slong prec)
{
slong i;
for (i = 0; i < len; i++)
{
acb_get_abs_ubound_arf(arb_midref(res + i), vec + i, prec);
mag_zero(arb_radref(res + i));
}
}
void
acb_poly_majorant(arb_poly_t res, const acb_poly_t poly, slong prec)
{
arb_poly_fit_length(res, poly->length);
_acb_poly_majorant(res->coeffs, poly->coeffs, poly->length, prec);
_arb_poly_set_length(res, poly->length);
}