1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
;; Copyright (C) 2002-2004, Yuji Minejima <ggb01164@nifty.ne.jp>
;; ALL RIGHTS RESERVED.
;;
;; $Id: array.lisp,v 1.4 2004/02/20 07:12:10 yuji Exp $
;;
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions
;; are met:
;;
;; * Redistributions of source code must retain the above copyright
;; notice, this list of conditions and the following disclaimer.
;; * Redistributions in binary form must reproduce the above copyright
;; notice, this list of conditions and the following disclaimer in
;; the documentation and/or other materials provided with the
;; distribution.
;;
;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
;; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
;; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
(in-package #:common-lisp)
(export '(aref array-dimenion array-in-bounds-p array-rank
array-row-major-index array-total-size bit-andc1 bit-andc2
bit-eqv bit-nand bit-nor bit-orc1 bit-orc2 bit-vector-p
simple-bit-vector-p vector vector-pop vector-push
vector-push-extend vectorp ))
(defun aref (array &rest subscripts)
"Access an element of ARRAY specified by SUBSCRIPTS."
(row-major-aref array (apply #'array-row-major-index array subscripts)))
(defsetf aref (array &rest subscripts) (value)
"Set VALUE onto the element of ARRAY specified by SUBSCRIPTS."
`(setf (row-major-aref ,array (array-row-major-index ,array ,@subscripts))
,value))
(defun array-dimension (array axis-number)
"Return AXIS-NUMBER dimension of ARRAY."
(nth axis-number (array-dimensions array)))
(defun array-in-bounds-p (array &rest subscripts)
"Return true if SUBSCRIPTS are all in bounds for ARRAY, otherwise false."
(and (not (some #'minusp subscripts))
(every #'< subscripts (array-dimensions array))))
(defun array-rank (array)
"Return the number of dimensions of ARRAY."
(length (array-dimensions array)))
(defun array-row-major-index (array &rest subscripts)
"Compute the row-major index of the element of ARRAY specified by SUBSCRIPTS."
(assert (apply #'array-in-bounds-p array subscripts))
(apply #'+ (maplist #'(lambda (x y)
(* (car x) (apply #'* (cdr y))))
subscripts
(array-dimensions array))))
(defun array-total-size (array)
"Return the total number of elements in ARRAY."
(apply #'* (array-dimensions array)))
(defun vector (&rest objects)
"Create a fresh simple general vector whose elements are OBJECTS."
(make-array (length objects)
:element-type t
:initial-contents objects))
(defun vector-pop (vector)
"Decrease the fill pointer of VECTOR by one and return the top element."
(check-type vector vector)
(assert (and (array-has-fill-pointer-p vector)
(plusp (fill-pointer vector))))
(aref vector (setf (fill-pointer vector) (1- (fill-pointer vector)))))
(defun vector-push (new-element vector)
"Try to store NEW-ELEMENT in VECTOR's element designated by the fill pointer."
(let ((fill-pointer (fill-pointer vector)))
(when (< fill-pointer (array-dimension vector 0))
(setf (aref vector fill-pointer) new-element)
(setf (fill-pointer vector) (1+ fill-pointer))
fill-pointer)))
(defun vector-push-extend (new-element vector &optional
(extension (1+ (length vector))))
"Do the same thing as vector-push but extend VECTOR when space is lacking."
(when (>= (fill-pointer vector) (array-dimension vector 0))
(assert (adjustable-array-p vector))
(adjust-array vector (+ (fill-pointer vector) extension)))
(vector-push new-element vector))
(defun vectorp (object)
"Return true if OBJECT is of type vector; otherwise, return false."
(and (arrayp object)
(eql (array-rank object) 1)))
(defun bit-andc1 (bit-array1 bit-array2 &optional opt-arg)
"And complement of BIT-ARRAY1 with BIT-ARRAY2."
(bit-and (bit-not bit-array1 opt-arg) bit-array2 opt-arg))
(defun bit-andc2 (bit-array1 bit-array2 &optional opt-arg)
"And BIT-ARRAY1 with complement of BIT-ARRAY2."
(bit-and bit-array1 (bit-not bit-array2) opt-arg))
(defun bit-eqv (bit-array1 bit-array2 &optional opt-arg)
"Exclusive nor (equivalence) between BIT-ARRAY1 and BIT-ARRAY2."
(bit-not (bit-xor bit-array1 bit-array2 opt-arg) opt-arg))
(defun bit-nand (bit-array1 bit-array2 &optional opt-arg)
"Complement of BIT-ARRAY1 and BIT-ARRAY2."
(bit-not (bit-and bit-array1 bit-array2 opt-arg) opt-arg))
(defun bit-nor (bit-array1 bit-array2 &optional opt-arg)
"Complement of BIT-ARRAY1 or BIT-ARRAY2."
(bit-not (bit-ior bit-array1 bit-array2 opt-arg) opt-arg))
(defun bit-orc1 (bit-array1 bit-array2 &optional opt-arg)
"Or complement of BIT-ARRAY1 with BIT-ARRAY2."
(bit-ior (bit-not bit-array1 opt-arg) bit-array2 opt-arg))
(defun bit-orc2 (bit-array1 bit-array2 &optional opt-arg)
"Or BIT-ARRAY1 with complement of BIT-ARRAY2."
(bit-ior bit-array1 (bit-not bit-array2) opt-arg))
(defun bit-vector-p (object)
"Return true if OBJECT is of type bit-vector; otherwise, return false."
(and (vectorp object)
(eq (array-element-type object) 'bit)))
(defun simple-bit-vector-p (object)
"Return true if OBJECT is of type simple-bit-vector; otherwise, return false."
(and (bit-vector-p object)
(typep object 'simple-array)))
|
