pqc/external/flint-2.4.3/padic_poly/fit_length.c
2014-05-24 23:16:06 +02:00

53 lines
1.8 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) 2011 Sebastian Pancratz
******************************************************************************/
#include <stdlib.h>
#include "fmpz.h"
#include "padic_poly.h"
void padic_poly_fit_length(padic_poly_t poly, slong len)
{
if (len > poly->alloc)
{
if (len < 2 * poly->alloc)
len = 2 * poly->alloc;
if (poly->alloc) /* Realloc */
{
poly->coeffs = (fmpz *) flint_realloc(poly->coeffs, len * sizeof(fmpz));
mpn_zero((mp_ptr) (poly->coeffs + poly->alloc), len - poly->alloc);
}
else /* Nothing allocated already so do it now */
{
poly->coeffs = (fmpz *) flint_calloc(len, sizeof(fmpz));
}
poly->alloc = len;
}
}