97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/*=============================================================================
|
|
|
|
This file is part of FLINT.
|
|
|
|
FLINT is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
FLINT is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with FLINT; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
=============================================================================*/
|
|
/******************************************************************************
|
|
|
|
Copyright (C) 2008, 2009 William Hart
|
|
Copyright (C) 2010, 2012 Sebastian Pancratz
|
|
Copyright (C) 2013 Mike Hansen
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
#ifdef T
|
|
|
|
#include "templates.h"
|
|
#include "fmpz_poly.h"
|
|
|
|
void
|
|
_TEMPLATE(T, poly_sqr_KS) (TEMPLATE(T, struct) * rop,
|
|
const TEMPLATE(T, struct) * op, slong len,
|
|
const TEMPLATE(T, ctx_t) ctx)
|
|
{
|
|
const slong in_len = len;
|
|
const slong d = TEMPLATE(T, ctx_degree) (ctx);
|
|
slong bits, i;
|
|
fmpz *f, *g;
|
|
|
|
TEMPLATE(CAP_T, VEC_NORM) (op, len, ctx);
|
|
|
|
if (!len)
|
|
{
|
|
if (2 * in_len - 1 > 0)
|
|
_TEMPLATE(T, poly_zero) (rop, 2 * in_len - 1, ctx);
|
|
return;
|
|
}
|
|
|
|
bits = 2 * fmpz_bits(TEMPLATE(T, ctx_prime) (ctx))
|
|
+ FLINT_BIT_COUNT(d) + FLINT_BIT_COUNT(len);
|
|
|
|
f = _fmpz_vec_init((2 * len - 1) + len);
|
|
g = f + (2 * len - 1);
|
|
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
TEMPLATE(T, bit_pack) (g + i, op + i, bits, ctx);
|
|
}
|
|
|
|
_fmpz_poly_sqr(f, g, len);
|
|
|
|
for (i = 0; i < 2 * len - 1; i++)
|
|
{
|
|
TEMPLATE(T, bit_unpack) (rop + i, f + i, bits, ctx);
|
|
}
|
|
|
|
_TEMPLATE(T, poly_zero) (rop + (2 * len - 1), 2 * (in_len - len), ctx);
|
|
|
|
_fmpz_vec_clear(f, (2 * len - 1) + len);
|
|
}
|
|
|
|
void
|
|
TEMPLATE(T, poly_sqr_KS) (TEMPLATE(T, poly_t) rop,
|
|
const TEMPLATE(T, poly_t) op,
|
|
const TEMPLATE(T, ctx_t) ctx)
|
|
{
|
|
const slong len = 2 * op->length - 1;
|
|
|
|
if (op->length == 0)
|
|
{
|
|
TEMPLATE(T, poly_zero) (rop, ctx);
|
|
}
|
|
else
|
|
{
|
|
TEMPLATE(T, poly_fit_length) (rop, len, ctx);
|
|
_TEMPLATE(T, poly_sqr_KS) (rop->coeffs, op->coeffs, op->length, ctx);
|
|
_TEMPLATE(T, poly_set_length) (rop, len, ctx);
|
|
}
|
|
}
|
|
|
|
|
|
#endif
|