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1 | ;;;; srfi-4.scm --- Homogeneous numeric vector datatypes. |
2 | ;;;; | |
3 | ;;;; Copyright (C) 2001 Free Software Foundation, Inc. | |
4 | ;;;; | |
5 | ;;;; This program is free software; you can redistribute it and/or | |
6 | ;;;; modify it under the terms of the GNU General Public License as | |
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8 | ;;;; (at your option) any later version. | |
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11 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
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13 | ;;;; General Public License for more details. | |
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18 | ;;;; Boston, MA 02111-1307 USA | |
19 | ;;;; | |
20 | ;;;; As a special exception, the Free Software Foundation gives permission | |
21 | ;;;; for additional uses of the text contained in its release of GUILE. | |
22 | ;;;; | |
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24 | ;;;; to produce an executable, this does not by itself cause the | |
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26 | ;;;; Your use of that executable is in no way restricted on account of | |
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41 | ;;;; whether to permit this exception to apply to your modifications. | |
42 | ;;;; If you do not wish that, delete this exception notice. | |
43 | ||
44 | ;;; Commentary: | |
45 | ||
46 | ;;; This module implements homogeneous numeric vectors as defined in SRFI-4. | |
47 | ||
48 | ;;; Code: | |
49 | ||
50 | ;;; Author: Martin Grabmueller <mgrabmue@cs.tu-berlin.de> | |
51 | ||
1a179b03 MD |
52 | (define-module (srfi srfi-4) |
53 | :export ( | |
71ca65d9 MG |
54 | ;;; Unsigned 8-bit vectors. |
55 | u8vector? make-u8vector u8vector u8vector-length u8vector-ref | |
56 | u8vector-set! u8vector->list list->u8vector | |
57 | ||
58 | ;;; Signed 8-bit vectors. | |
59 | s8vector? make-s8vector s8vector s8vector-length s8vector-ref | |
60 | s8vector-set! s8vector->list list->s8vector | |
61 | ||
62 | ;;; Unsigned 16-bit vectors. | |
63 | u16vector? make-u16vector u16vector u16vector-length u16vector-ref | |
64 | u16vector-set! u16vector->list list->u16vector | |
65 | ||
66 | ;;; Signed 16-bit vectors. | |
67 | s16vector? make-s16vector s16vector s16vector-length s16vector-ref | |
68 | s16vector-set! s16vector->list list->s16vector | |
69 | ||
70 | ;;; Unsigned 32-bit vectors. | |
71 | u32vector? make-u32vector u32vector u32vector-length u32vector-ref | |
72 | u32vector-set! u32vector->list list->u32vector | |
73 | ||
74 | ;;; Signed 32-bit vectors. | |
75 | s32vector? make-s32vector s32vector s32vector-length s32vector-ref | |
76 | s32vector-set! s32vector->list list->s32vector | |
77 | ||
78 | ;;; Unsigned 64-bit vectors. | |
79 | u64vector? make-u64vector u64vector u64vector-length u64vector-ref | |
80 | u64vector-set! u64vector->list list->u64vector | |
81 | ||
82 | ;;; Signed 64-bit vectors. | |
83 | s64vector? make-s64vector s64vector s64vector-length s64vector-ref | |
84 | s64vector-set! s64vector->list list->s64vector | |
85 | ||
86 | ;;; 32-bit floating point vectors. | |
87 | f32vector? make-f32vector f32vector f32vector-length f32vector-ref | |
88 | f32vector-set! f32vector->list list->f32vector | |
89 | ||
90 | ;;; 64-bit floating point vectors. | |
91 | f64vector? make-f64vector f64vector f64vector-length f64vector-ref | |
92 | f64vector-set! f64vector->list list->f64vector | |
1a179b03 | 93 | )) |
71ca65d9 MG |
94 | |
95 | ||
96 | ;; Make 'srfi-4 available as a feature identifiere to `cond-expand'. | |
97 | ;; | |
98 | (cond-expand-provide (current-module) '(srfi-4)) | |
99 | ||
100 | ||
101 | ;; Load the compiled primitives from the shared library. | |
102 | ;; | |
103 | (load-extension "libguile-srfi-srfi-4" "scm_init_srfi_4") | |
104 | ||
105 | ||
106 | ;; Reader extension for #f32() and #f64() vectors. | |
107 | ;; | |
108 | (define (hash-f char port) | |
109 | (if (or (char=? (peek-char port) #\3) | |
110 | (char=? (peek-char port) #\6)) | |
111 | (let* ((obj (read port))) | |
112 | (if (number? obj) | |
113 | (cond ((= obj 32) | |
114 | (let ((l (read port))) | |
115 | (if (list? l) | |
116 | (list->f32vector l) | |
117 | (error "syntax error in #f32() vector literal")))) | |
118 | ((= obj 64) | |
119 | (let ((l (read port))) | |
120 | (if (list? l) | |
121 | (list->f64vector l) | |
122 | (error "syntax error in #f64() vector literal")))) | |
123 | (else | |
124 | (error "syntax error in #f...() vector literal"))) | |
125 | (error "syntax error in #f...() vector literal"))) | |
126 | #f)) | |
127 | ||
128 | ||
129 | ;; Reader extension for #u8(), #u16(), #u32() and #u64() vectors. | |
130 | ;; | |
131 | (define (hash-u char port) | |
132 | (if (or (char=? (peek-char port) #\8) | |
133 | (char=? (peek-char port) #\1) | |
134 | (char=? (peek-char port) #\3) | |
135 | (char=? (peek-char port) #\6)) | |
136 | (let ((obj (read port))) | |
137 | (cond ((= obj 8) | |
138 | (let ((l (read port))) | |
139 | (if (list? l) | |
140 | (list->u8vector l) | |
141 | (error "syntax error in #u8() vector literal")))) | |
142 | ((= obj 16) | |
143 | (let ((l (read port))) | |
144 | (if (list? l) | |
145 | (list->u16vector l) | |
146 | (error "syntax error in #u16() vector literal")))) | |
147 | ((= obj 32) | |
148 | (let ((l (read port))) | |
149 | (if (list? l) | |
150 | (list->u32vector l) | |
151 | (error "syntax error in #u32() vector literal")))) | |
152 | ((= obj 64) | |
153 | (let ((l (read port))) | |
154 | (if (list? l) | |
155 | (list->u64vector l) | |
156 | (error "syntax error in #u64() vector literal")))) | |
157 | (else | |
158 | (error "syntax error in #u...() vector literal")))) | |
159 | (error "syntax error in #u...() vector literal"))) | |
160 | ||
161 | ||
162 | ;; Reader extension for #s8(), #s16(), #s32() and #s64() vectors. | |
163 | ;; | |
164 | (define (hash-s char port) | |
165 | (if (or (char=? (peek-char port) #\8) | |
166 | (char=? (peek-char port) #\1) | |
167 | (char=? (peek-char port) #\3) | |
168 | (char=? (peek-char port) #\6)) | |
169 | (let ((obj (read port))) | |
170 | (cond ((= obj 8) | |
171 | (let ((l (read port))) | |
172 | (if (list? l) | |
173 | (list->s8vector l) | |
174 | (error "syntax error in #s8() vector literal")))) | |
175 | ((= obj 16) | |
176 | (let ((l (read port))) | |
177 | (if (list? l) | |
178 | (list->s16vector l) | |
179 | (error "syntax error in #s16() vector literal")))) | |
180 | ((= obj 32) | |
181 | (let ((l (read port))) | |
182 | (if (list? l) | |
183 | (list->s32vector l) | |
184 | (error "syntax error in #s32() vector literal")))) | |
185 | ((= obj 64) | |
186 | (let ((l (read port))) | |
187 | (if (list? l) | |
188 | (list->s64vector l) | |
189 | (error "syntax error in #s64() vector literal")))) | |
190 | (else | |
191 | (error "syntax error in #s...() vector literal")))) | |
192 | (error "syntax error in #s...() vector literal"))) | |
193 | ||
194 | ||
195 | ;; Install the hash extensions. | |
196 | ;; | |
197 | (read-hash-extend #\f hash-f) | |
198 | (read-hash-extend #\u hash-u) | |
199 | (read-hash-extend #\s hash-s) |