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1991-10-11
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3KB
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79 lines
;;;
;;; Scheme->C test program
;;;
;;;
;;; Test functions for basic Scheme functions.
;;;
;* Copyright 1989 Digital Equipment Corporation
;* All Rights Reserved
;*
;* Permission to use, copy, and modify this software and its documentation is
;* hereby granted only under the following terms and conditions. Both the
;* above copyright notice and this permission notice must appear in all copies
;* of the software, derivative works or modified versions, and any portions
;* thereof, and both notices must appear in supporting documentation.
;*
;* Users of this software agree to the terms and conditions set forth herein,
;* and hereby grant back to Digital a non-exclusive, unrestricted, royalty-free
;* right and license under any changes, enhancements or extensions made to the
;* core functions of the software, including but not limited to those affording
;* compatibility with other hardware or software environments, but excluding
;* applications which incorporate this software. Users further agree to use
;* their best efforts to return to Digital any such changes, enhancements or
;* extensions that they make and inform Digital of noteworthy uses of this
;* software. Correspondence should be provided to Digital at:
;*
;* Director of Licensing
;* Western Research Laboratory
;* Digital Equipment Corporation
;* 100 Hamilton Avenue
;* Palo Alto, California 94301
;*
;* This software may be distributed (but not offered for sale or transferred
;* for compensation) to third parties, provided such third parties agree to
;* abide by the terms and conditions of this notice.
;*
;* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
;* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
;* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
;* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
;* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
;* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
;* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
;* SOFTWARE.
(module test53)
;;; Loops until a key is entered on the keyboard
(define (KEY-LOOP)
(let loop () (when (char-ready?) (read-char) (loop)))
(display "Waiting for char (and a return) ...")
(flush-buffer)
(let loop ((cnt 0))
(unless (char-ready?)
(if (zero? (modulo cnt 1000))
(begin (display ".")
(loop 1)))
(loop (+ cnt 1))))
(write (read-char))
(display " entered")
(let loop () (when (char-ready?) (read-char) (loop)))
(newline))
(define (CONTROL-C)
(display "Hit control-c ...")
(flush-buffer)
(let loop ((cnt 1))
(if (zero? (modulo cnt 10000))
(begin (display ".")
(flush-buffer)
(loop 1))
(loop (+ cnt 1)))))
(define (TEST53)
(key-loop)
(control-c))