/*
* mplogic.h
*
* Bitwise logical operations on MPI values
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _H_MPLOGIC_
#define _H_MPLOGIC_
#include "mpi.h"
SEC_BEGIN_PROTOS
/*
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,
unsigned int *num);
/* count set bits */
mp_err mpl_num_clear(mp_int *a,
unsigned 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_size mpl_significant_bits(
const mp_int *a);
SEC_END_PROTOS
#endif /* end _H_MPLOGIC_ */
