Functions for converting between buffers and integers.

These functions convert between positive integers, and
fixed-size memory buffers representing pure binary numbers in
big endian byte order.

This functionality will be used in some upcoming networking
code.

* arith.c (num_from_buffer, num_to_buffer): New functions.

* arith.h (num_from_buffer, num_to_buffer): Declared.

* mpi/mpi.c (mp_to_unsigned_buf): New function.

* mpi/mpi.h (mp_to_unsigned_buf): Declared.

1 files changed, 2 insertions, 0 deletions

diff --git a/arith.h b/arith.h
index 083a8a19..bc3a0568 100644
--- a/arith.h
+++ b/arith.h
@@ -28,6 +28,8 @@ val make_bignum(void);
 val bignum(cnum cn);
 val bignum_from_long(long l);
 val bignum_from_uintptr(uint_ptr_t u);
+val num_from_buffer(mem_t *buf, int bytes);
+int num_to_buffer(val num, mem_t *buf, int bytes);
 int highest_bit(int_ptr_t n);
 val normalize(val bignum);
 val in_int_ptr_range(val bignum);