pqc/external/flint-2.4.3/fq_poly_templates/scalar_submul_fq.c

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2014-05-18 22:03:37 +00:00
/*=============================================================================
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) 2012 Sebastian Pancratz
Copyright (C) 2013 Mike Hansen
******************************************************************************/
#ifdef T
#include "templates.h"
void
_TEMPLATE3(T, poly_scalar_submul, T) (TEMPLATE(T, struct) * rop,
const TEMPLATE(T, struct) * op, slong len,
const TEMPLATE(T, t) x,
const TEMPLATE(T, ctx_t) ctx)
{
if (TEMPLATE(T, is_zero) (x, ctx))
return;
if (TEMPLATE(T, is_one) (x, ctx))
{
_TEMPLATE(T, poly_sub) (rop, rop, len, op, len, ctx);
}
else
{
slong i;
TEMPLATE(T, t) t;
TEMPLATE(T, init) (t, ctx);
for (i = 0; i < len; i++)
{
TEMPLATE(T, mul) (t, op + i, x, ctx);
TEMPLATE(T, sub) (rop + i, rop + i, t, ctx);
}
TEMPLATE(T, clear) (t, ctx);
}
}
void
TEMPLATE3(T, poly_scalar_submul, T) (TEMPLATE(T, poly_t) rop,
const TEMPLATE(T, poly_t) op,
const TEMPLATE(T, t) x,
const TEMPLATE(T, ctx_t) ctx)
{
if (!
(TEMPLATE(T, is_zero) (x, ctx) || TEMPLATE(T, poly_is_zero) (op, ctx)))
{
TEMPLATE(T, poly_fit_length) (rop, op->length, ctx);
_TEMPLATE3(T, poly_scalar_submul, T) (rop->coeffs, op->coeffs,
op->length, x, ctx);
_TEMPLATE(T, poly_set_length) (rop, FLINT_MAX(rop->length, op->length),
ctx);
_TEMPLATE(T, poly_normalise) (rop, ctx);
}
}
#endif