security/nss/lib/freebl/mpi/mplogic.h@6474c204b198
security/nss/lib/freebl/mpi/mplogic.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*
2 * mplogic.h
3 *
4 * Bitwise logical operations on MPI values
5 *
6 * This Source Code Form is subject to the terms of the Mozilla Public
7 * License, v. 2.0. If a copy of the MPL was not distributed with this
8 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
10 #ifndef _H_MPLOGIC_
11 #define _H_MPLOGIC_
13 #include "mpi.h"
15 /*
16 The logical operations treat an mp_int as if it were a bit vector,
17 without regard to its sign (an mp_int is represented in a signed
18 magnitude format). Values are treated as if they had an infinite
19 string of zeros left of the most-significant bit.
20 */
22 /* Parity results */
24 #define MP_EVEN MP_YES
25 #define MP_ODD MP_NO
27 /* Bitwise functions */
29 mp_err mpl_not(mp_int *a, mp_int *b); /* one's complement */
30 mp_err mpl_and(mp_int *a, mp_int *b, mp_int *c); /* bitwise AND */
31 mp_err mpl_or(mp_int *a, mp_int *b, mp_int *c); /* bitwise OR */
32 mp_err mpl_xor(mp_int *a, mp_int *b, mp_int *c); /* bitwise XOR */
34 /* Shift functions */
36 mp_err mpl_rsh(const mp_int *a, mp_int *b, mp_digit d); /* right shift */
37 mp_err mpl_lsh(const mp_int *a, mp_int *b, mp_digit d); /* left shift */
39 /* Bit count and parity */
41 mp_err mpl_num_set(mp_int *a, int *num); /* count set bits */
42 mp_err mpl_num_clear(mp_int *a, int *num); /* count clear bits */
43 mp_err mpl_parity(mp_int *a); /* determine parity */
45 /* Get & Set the value of a bit */
47 mp_err mpl_set_bit(mp_int *a, mp_size bitNum, mp_size value);
48 mp_err mpl_get_bit(const mp_int *a, mp_size bitNum);
49 mp_err mpl_get_bits(const mp_int *a, mp_size lsbNum, mp_size numBits);
50 mp_err mpl_significant_bits(const mp_int *a);
52 #endif /* end _H_MPLOGIC_ */
