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

74 lines
2.4 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) 2012 Andres Goens
Copyright (C) 2013 Mike Hansen
******************************************************************************/
#ifdef T
#include "templates.h"
void
TEMPLATE(T, poly_realloc) (TEMPLATE(T, poly_t) poly, slong alloc,
const TEMPLATE(T, ctx_t) ctx)
{
slong i;
if (alloc == 0) /* Clear up, reinitialise */
{
TEMPLATE(T, poly_clear) (poly, ctx);
TEMPLATE(T, poly_init) (poly, ctx);
}
else if (poly->alloc) /* Realloc */
{
for (i = alloc; i < poly->alloc; i++)
TEMPLATE(T, clear) (poly->coeffs + i, ctx);
poly->coeffs =
(TEMPLATE(T, struct) *) flint_realloc(poly->coeffs,
alloc *
sizeof(TEMPLATE(T, struct)));
for (i = poly->alloc; i < alloc; i++)
TEMPLATE(T, init) (poly->coeffs + i, ctx);
poly->length = FLINT_MIN(poly->length, alloc);
_TEMPLATE(T, poly_normalise) (poly, ctx);
}
else /* Nothing allocated already so do it now */
{
poly->coeffs =
(TEMPLATE(T, struct) *) flint_malloc(alloc *
sizeof(TEMPLATE(T, struct)));
for (i = 0; i < alloc; i++)
TEMPLATE(T, init) (poly->coeffs + i, ctx);
}
poly->alloc = alloc;
}
#endif