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* Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit if you need additional information or have any
* questions.
/* *********************************************************************
* The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
* The Initial Developer of the Original Code is
* Michael J. Fromberger.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
* Contributor(s):
*********************************************************************** */
/* Bitwise logical operations on MPI values */
#ifndef _MPLOGIC_H
#define _MPLOGIC_H
/* $Id: mplogic.h,v 1.7 2004/04/27 23:04:36 Exp $ */
#include "mpi.h"
The logical operations treat an mp_int as if it were a bit vector,
without regard to its sign (an mp_int is represented in a signed
magnitude format). Values are treated as if they had an infinite
string of zeros left of the most-significant bit.
/* Parity results */
#define MP_EVEN MP_YES
#define MP_ODD MP_NO
/* Bitwise functions */
mp_err mpl_not(mp_int *a, mp_int *b); /* one's complement */
mp_err mpl_and(mp_int *a, mp_int *b, mp_int *c); /* bitwise AND */
mp_err mpl_or(mp_int *a, mp_int *b, mp_int *c); /* bitwise OR */
mp_err mpl_xor(mp_int *a, mp_int *b, mp_int *c); /* bitwise XOR */
/* Shift functions */
mp_err mpl_rsh(const mp_int *a, mp_int *b, mp_digit d); /* right shift */
mp_err mpl_lsh(const mp_int *a, mp_int *b, mp_digit d); /* left shift */
/* Bit count and parity */
mp_err mpl_num_set(mp_int *a, int *num); /* count set bits */
mp_err mpl_num_clear(mp_int *a, int *num); /* count clear bits */
mp_err mpl_parity(mp_int *a); /* determine parity */
/* Get & Set the value of a bit */
mp_err mpl_set_bit(mp_int *a, mp_size bitNum, mp_size value);
mp_err mpl_get_bit(const mp_int *a, mp_size bitNum);
mp_err mpl_get_bits(const mp_int *a, mp_size lsbNum, mp_size numBits);
mp_err mpl_significant_bits(const mp_int *a);
#endif /* _MPLOGIC_H */