bit_vector();
//!< creates a zero length bit_vector.
- bit_vector(int size, const basis::abyte *initial = NIL);
+ bit_vector(int size, const basis::abyte *initial = NULL_POINTER);
//!< creates a bit_vector able to store "size" bits.
- /*!< if initial is NIL, the vector is initialized to zero. otherwise, the
+ /*!< if initial is NULL_POINTER, the vector is initialized to zero. otherwise, the
bits are copied from "initial". "initial" must be large enough for the
copying to succeed. */