add-bitops patch

Adding bit operations to MPI.

* mpi/mpi.c (MAX, MIN): New macros.
(mp_2comp, mp_and, mp_or, mp_xor, mp_comp, mp_trunc, mp_shift,
mp_bit): New functions.

* mpi/mpi.h (mp_2comp, mp_and, mp_or, mp_xor, mp_comp, mp_trunc,
mp_shift, mp_bit): Declared.

1 files changed, 13 insertions, 0 deletions

diff --git a/mpi/mpi.h b/mpi/mpi.h
index c6136c15..98280247 100644
--- a/mpi/mpi.h
+++ b/mpi/mpi.h
@@ -54,6 +54,7 @@
 
 /* Macros for accessing the mp_int internals           */
 #define  SIGN(MP)     ((MP)->sign)
+#define  ISNEG(MP)    ((MP)->sign == MP_NEG)
 #define  USED(MP)     ((MP)->used)
 #define  ALLOC(MP)    ((MP)->alloc)
 #define  DIGITS(MP)   ((MP)->dp)
@@ -187,6 +188,18 @@ mp_err mp_invmod(mp_int *a, mp_int *m, mp_int *c);
 #endif /* end MP_NUMTH */
 
 /*------------------------------------------------------------------------*/
+/* Bit ops                                                                */
+mp_err mp_2comp(mp_int *a, mp_int *b, mp_size dig); /* peculiar semantics */
+mp_err mp_and(mp_int *a, mp_int *b, mp_int *c);
+mp_err mp_or(mp_int *a, mp_int *b, mp_int *c);
+mp_err mp_xor(mp_int *a, mp_int *b, mp_int *c);
+mp_err mp_comp(mp_int *a, mp_int *b);
+mp_err mp_trunc_comp(mp_int *a, mp_int *b, mp_digit bits);
+mp_err mp_trunc(mp_int *a, mp_int *b, mp_digit bits);
+mp_err mp_shift(mp_int *a, mp_int *b, int bits); /* + left, - right */
+mp_err mp_bit(mp_int *a, mp_digit bit);
+
+/*------------------------------------------------------------------------*/
 /* Conversions                                                            */
 
 mp_err mp_to_double(mp_int *mp, double *d);