1 files changed, 52 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/mpi/mplogic.h b/security/nss/lib/freebl/mpi/mplogic.h
new file mode 100644
index 000000000..a4a6b7735
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+++ b/security/nss/lib/freebl/mpi/mplogic.h
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+/*
+ *  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"
+
+/*
+  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_size mpl_significant_bits(const mp_int *a);
+
+#endif /* end _H_MPLOGIC_ */