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Side by Side Diff: mozilla/security/nss/lib/freebl/mpi/mplogic.h

Issue 14249009: Change the NSS and NSPR source tree to the new directory structure to be (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/nss/
Patch Set: Created 7 years, 8 months ago
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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/. */
9 /* $Id: mplogic.h,v 1.8 2012/04/25 14:49:50 gerv%gerv.net Exp $ */
10
11 #ifndef _H_MPLOGIC_
12 #define _H_MPLOGIC_
13
14 #include "mpi.h"
15
16 /*
17 The logical operations treat an mp_int as if it were a bit vector,
18 without regard to its sign (an mp_int is represented in a signed
19 magnitude format). Values are treated as if they had an infinite
20 string of zeros left of the most-significant bit.
21 */
22
23 /* Parity results */
24
25 #define MP_EVEN MP_YES
26 #define MP_ODD MP_NO
27
28 /* Bitwise functions */
29
30 mp_err mpl_not(mp_int *a, mp_int *b); /* one's complement */
31 mp_err mpl_and(mp_int *a, mp_int *b, mp_int *c); /* bitwise AND */
32 mp_err mpl_or(mp_int *a, mp_int *b, mp_int *c); /* bitwise OR */
33 mp_err mpl_xor(mp_int *a, mp_int *b, mp_int *c); /* bitwise XOR */
34
35 /* Shift functions */
36
37 mp_err mpl_rsh(const mp_int *a, mp_int *b, mp_digit d); /* right shift */
38 mp_err mpl_lsh(const mp_int *a, mp_int *b, mp_digit d); /* left shift */
39
40 /* Bit count and parity */
41
42 mp_err mpl_num_set(mp_int *a, int *num); /* count set bits */
43 mp_err mpl_num_clear(mp_int *a, int *num); /* count clear bits */
44 mp_err mpl_parity(mp_int *a); /* determine parity */
45
46 /* Get & Set the value of a bit */
47
48 mp_err mpl_set_bit(mp_int *a, mp_size bitNum, mp_size value);
49 mp_err mpl_get_bit(const mp_int *a, mp_size bitNum);
50 mp_err mpl_get_bits(const mp_int *a, mp_size lsbNum, mp_size numBits);
51 mp_err mpl_significant_bits(const mp_int *a);
52
53 #endif /* end _H_MPLOGIC_ */
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