pqc/external/flint-2.4.3/padic/get_fmpz.c

57 lines
1.7 KiB
C
Raw Normal View History

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) 2011, 2012 Sebastian Pancratz
******************************************************************************/
#include "padic.h"
void padic_get_fmpz(fmpz_t rop, const padic_t op, const padic_ctx_t ctx)
{
if (padic_val(op) < 0)
{
flint_printf("Exception (padic_get_fmpz). Negative valuation.\n");
abort();
}
if (padic_is_zero(op))
{
fmpz_zero(rop);
}
else if (padic_val(op) == 0)
{
fmpz_set(rop, padic_unit(op));
}
else
{
fmpz_t pow;
int alloc;
alloc = _padic_ctx_pow_ui(pow, padic_val(op), ctx);
fmpz_mul(rop, padic_unit(op), pow);
if (alloc)
fmpz_clear(pow);
}
}