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/*
Copyright (C) 2012 Sebastian Pancratz
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_poly.h"
#include "padic_poly.h"
void padic_poly_shift_left(padic_poly_t rop, const padic_poly_t op, slong n,
const padic_ctx_t ctx)
{
if (rop->N < op->N)
{
flint_throw(FLINT_ERROR, "Exception (padic_poly_shift_left). rop->N < op->N.\n");
}
if (n == 0)
{
padic_poly_set(rop, op, ctx);
}
else if (op->length == 0)
{
padic_poly_zero(rop);
}
else
{
padic_poly_fit_length(rop, op->length + n);
_fmpz_poly_shift_left(rop->coeffs, op->coeffs, op->length, n);
rop->val = op->val;
_padic_poly_set_length(rop, op->length + n);
/* TODO: Reduce */
}
}