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SGI Freeware 2002 November
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SGI Freeware 2002 November - Disc 2.iso
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dist
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fw_guile.idb
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1.4
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ice-9
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arrays.scm.z
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arrays.scm
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2002-07-08
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84 lines
;;; installed-scm-file
;;;; Copyright (C) 1999 Free Software Foundation, Inc.
;;;;
;;;; This program is free software; you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; the Free Software Foundation; either version 2, or (at your option)
;;;; any later version.
;;;;
;;;; This program is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;;; GNU General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU General Public License
;;;; along with this software; see the file COPYING. If not, write to
;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
;;;; Boston, MA 02111-1307 USA
;;;;
(define uniform-vector? array?)
(define make-uniform-vector dimensions->uniform-array)
;; (define uniform-vector-ref array-ref)
(define (uniform-vector-set! u i o)
(uniform-array-set1! u o i))
(define uniform-vector-fill! array-fill!)
(define uniform-vector-read! uniform-array-read!)
(define uniform-vector-write uniform-array-write)
(define (make-array fill . args)
(dimensions->uniform-array args () fill))
(define (make-uniform-array prot . args)
(dimensions->uniform-array args prot))
(define (list->array ndim lst)
(list->uniform-array ndim '() lst))
(define (list->uniform-vector prot lst)
(list->uniform-array 1 prot lst))
(define (array-shape a)
(map (lambda (ind) (if (number? ind) (list 0 (+ -1 ind)) ind))
(array-dimensions a)))
(let ((make-array-proc (lambda (template)
(lambda (c port)
(read:uniform-vector template port)))))
(for-each (lambda (char template)
(read-hash-extend char
(make-array-proc template)))
'(#\b #\a #\u #\e #\s #\i #\c #\y #\h #\l)
'(#t #\a 1 -1 1.0 1/3 0+i #\nul s l)))
(let ((array-proc (lambda (c port)
(read:array c port))))
(for-each (lambda (char) (read-hash-extend char array-proc))
'(#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9)))
(define (read:array digit port)
(define chr0 (char->integer #\0))
(let ((rank (let readnum ((val (- (char->integer digit) chr0)))
(if (char-numeric? (peek-char port))
(readnum (+ (* 10 val)
(- (char->integer (read-char port)) chr0)))
val)))
(prot (if (eq? #\( (peek-char port))
'()
(let ((c (read-char port)))
(case c ((#\b) #t)
((#\a) #\a)
((#\u) 1)
((#\e) -1)
((#\s) 1.0)
((#\i) 1/3)
((#\c) 0+i)
(else (error "read:array unknown option " c)))))))
(if (eq? (peek-char port) #\()
(list->uniform-array rank prot (read port))
(error "read:array list not found"))))
(define (read:uniform-vector proto port)
(if (eq? #\( (peek-char port))
(list->uniform-array 1 proto (read port))
(error "read:uniform-vector list not found")))