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/*
Copyright (C) 2013 Mike Hansen
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/>.
*/
#ifdef T
#include "templates.h"
void
_TEMPLATE(T, poly_reverse) (TEMPLATE(T, struct) * res,
const TEMPLATE(T, struct) * poly, slong len,
slong n, const TEMPLATE(T, ctx_t) ctx)
{
if (res == poly)
{
slong i;
for (i = 0; i < n / 2; i++)
{
TEMPLATE(T, struct) t = res[i];
res[i] = res[n - 1 - i];
res[n - 1 - i] = t;
}
for (i = 0; i < n - len; i++)
TEMPLATE(T, zero) (res + i, ctx);
}
else
{
slong i;
for (i = 0; i < n - len; i++)
TEMPLATE(T, zero) (res + i, ctx);
for (i = 0; i < len; i++)
TEMPLATE(T, set) (res + (n - len) + i, poly + (len - 1) - i, ctx);
}
}
void
TEMPLATE(T, poly_reverse) (TEMPLATE(T, poly_t) res,
const TEMPLATE(T, poly_t) poly, slong n,
const TEMPLATE(T, ctx_t) ctx)
{
slong len = FLINT_MIN(n, poly->length);
if (len == 0)
{
TEMPLATE(T, poly_zero) (res, ctx);
return;
}
TEMPLATE(T, poly_fit_length) (res, n, ctx);
_TEMPLATE(T, poly_reverse) (res->coeffs, poly->coeffs, len, n, ctx);
_TEMPLATE(T, poly_set_length) (res, n, ctx);
_TEMPLATE(T, poly_normalise) (res, ctx);
}
#endif
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