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; Copyright (c) 1993-2008 by Richard Kelsey. See file COPYING.
(define-local-syntax (define-primitive id nargs)
(let ((args (reverse (list-tail '(z y x) (- '3 nargs)))))
`(define (,id . ,args)
(call-primitively ,id . ,args))))
(define-primitive make-byte-vector 1)
(define-primitive null-pointer? 1)
(define (byte-vector-ref vec index)
(call-primitively byte-contents-int8 (pointer-add vec index)))
(define (byte-vector-set! vec index value)
(call-primitively byte-set-contents-int8! (pointer-add vec index) value))
(define (pointer->integer x)
(call-primitively coerce x '(pointer int8) 'int32))
(define (integer->pointer x)
(call-primitively coerce x 'int32 '(pointer int8)))
(define (test)
(let ((bv (make-byte-vector 10)))
(if (null-pointer? bv)
100
(pointer->integer bv))))
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