DataMuseum.dk

top - metrics - download

    Length: 2308 (0x904)
    Types: TextFile
    Names: »bitvec.scm.2«

└─⟦a0efdde77⟧ Bits:30001252 EUUGD11 Tape, 1987 Spring Conference Helsinki
    └─⟦this⟧ »EUUGD11/gnu-31mar87/scheme/scm/bitvec.scm.2« 

TextFile

;;; -*-Scheme-*-
;;;
;;;	Copyright (c) 1984 Massachusetts Institute of Technology
;;;
;;;	This material was developed by the Scheme project at the
;;;	Massachusetts Institute of Technology, Department of
;;;	Electrical Engineering and Computer Science.  Permission to
;;;	copy this software, to redistribute it, and to use it for any
;;;	purpose is granted, subject to the following restrictions and
;;;	understandings.
;;;
;;;	1. Any copy made of this software must include this copyright
;;;	notice in full.
;;;
;;;	2. Users of this software agree to make their best efforts (a)
;;;	to return to the MIT Scheme project any improvements or
;;;	extensions that they make, so that these may be included in
;;;	future releases; and (b) to inform MIT of noteworthy uses of
;;;	this software.
;;;
;;;	3.  All materials developed as a consequence of the use of
;;;	this software shall duly acknowledge such use, in accordance
;;;	with the usual standards of acknowledging credit in academic
;;;	research.
;;;
;;;	4. MIT has made no warrantee or representation that the
;;;	operation of this software will be error-free, and MIT is
;;;	under no obligation to provide any services, by way of
;;;	maintenance, update, or otherwise.
;;;
;;;	5.  In conjunction with products arising from the use of this
;;;	material, there shall be no use of the name of the
;;;	Massachusetts Institute of Technology nor of any adaptation
;;;	thereof in any advertising, promotional, or sales literature
;;;	without prior written consent from MIT in each case.
;;;

;;;; 1 Bit Vectors

(declare (usual-integrations))

(define vector-1b-cons (make-primitive-procedure 'VECTOR-1B-CONS))
(define vector-1b? (make-primitive-procedure 'VECTOR-1B?))
(define vector-1b-size (make-primitive-procedure 'VECTOR-1B-SIZE))
(define vector-1b-ref (make-primitive-procedure 'VECTOR-1B-REF))
(define vector-1b-set! (make-primitive-procedure 'VECTOR-1B-SET!))
(define vector-1b-set-false! (make-primitive-procedure 'VECTOR-1B-SET-FALSE!))
(define vector-1b-set-true! (make-primitive-procedure 'VECTOR-1B-SET-TRUE!))

(define (make-initialized-vector-1b size initialization)
  (let ((vector (vector-1b-cons size)))
    (let clear ((n 0))
      (if (= n size)
	  vector
	  (sequence (vector-1b-set! vector n (initialization n))
		    (clear (1+ n)))))))