| /* |
| * 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 |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * 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 www.oracle.com 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 gerv%gerv.net 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 */ |
