mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
200 lines
6.6 KiB
Scheme
200 lines
6.6 KiB
Scheme
;;;; srfi-4.scm --- Homogeneous numeric vector datatypes.
|
|
;;;;
|
|
;;;; Copyright (C) 2001 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
|
|
;;;;
|
|
;;;; As a special exception, the Free Software Foundation gives permission
|
|
;;;; for additional uses of the text contained in its release of GUILE.
|
|
;;;;
|
|
;;;; The exception is that, if you link the GUILE library with other files
|
|
;;;; to produce an executable, this does not by itself cause the
|
|
;;;; resulting executable to be covered by the GNU General Public License.
|
|
;;;; Your use of that executable is in no way restricted on account of
|
|
;;;; linking the GUILE library code into it.
|
|
;;;;
|
|
;;;; This exception does not however invalidate any other reasons why
|
|
;;;; the executable file might be covered by the GNU General Public License.
|
|
;;;;
|
|
;;;; This exception applies only to the code released by the
|
|
;;;; Free Software Foundation under the name GUILE. If you copy
|
|
;;;; code from other Free Software Foundation releases into a copy of
|
|
;;;; GUILE, as the General Public License permits, the exception does
|
|
;;;; not apply to the code that you add in this way. To avoid misleading
|
|
;;;; anyone as to the status of such modified files, you must delete
|
|
;;;; this exception notice from them.
|
|
;;;;
|
|
;;;; If you write modifications of your own for GUILE, it is your choice
|
|
;;;; whether to permit this exception to apply to your modifications.
|
|
;;;; If you do not wish that, delete this exception notice.
|
|
|
|
;;; Commentary:
|
|
|
|
;;; This module implements homogeneous numeric vectors as defined in SRFI-4.
|
|
|
|
;;; Code:
|
|
|
|
;;; Author: Martin Grabmueller <mgrabmue@cs.tu-berlin.de>
|
|
|
|
(define-module (srfi srfi-4))
|
|
|
|
(export
|
|
;;; Unsigned 8-bit vectors.
|
|
u8vector? make-u8vector u8vector u8vector-length u8vector-ref
|
|
u8vector-set! u8vector->list list->u8vector
|
|
|
|
;;; Signed 8-bit vectors.
|
|
s8vector? make-s8vector s8vector s8vector-length s8vector-ref
|
|
s8vector-set! s8vector->list list->s8vector
|
|
|
|
;;; Unsigned 16-bit vectors.
|
|
u16vector? make-u16vector u16vector u16vector-length u16vector-ref
|
|
u16vector-set! u16vector->list list->u16vector
|
|
|
|
;;; Signed 16-bit vectors.
|
|
s16vector? make-s16vector s16vector s16vector-length s16vector-ref
|
|
s16vector-set! s16vector->list list->s16vector
|
|
|
|
;;; Unsigned 32-bit vectors.
|
|
u32vector? make-u32vector u32vector u32vector-length u32vector-ref
|
|
u32vector-set! u32vector->list list->u32vector
|
|
|
|
;;; Signed 32-bit vectors.
|
|
s32vector? make-s32vector s32vector s32vector-length s32vector-ref
|
|
s32vector-set! s32vector->list list->s32vector
|
|
|
|
;;; Unsigned 64-bit vectors.
|
|
u64vector? make-u64vector u64vector u64vector-length u64vector-ref
|
|
u64vector-set! u64vector->list list->u64vector
|
|
|
|
;;; Signed 64-bit vectors.
|
|
s64vector? make-s64vector s64vector s64vector-length s64vector-ref
|
|
s64vector-set! s64vector->list list->s64vector
|
|
|
|
;;; 32-bit floating point vectors.
|
|
f32vector? make-f32vector f32vector f32vector-length f32vector-ref
|
|
f32vector-set! f32vector->list list->f32vector
|
|
|
|
;;; 64-bit floating point vectors.
|
|
f64vector? make-f64vector f64vector f64vector-length f64vector-ref
|
|
f64vector-set! f64vector->list list->f64vector
|
|
)
|
|
|
|
|
|
;; Make 'srfi-4 available as a feature identifiere to `cond-expand'.
|
|
;;
|
|
(cond-expand-provide (current-module) '(srfi-4))
|
|
|
|
|
|
;; Load the compiled primitives from the shared library.
|
|
;;
|
|
(load-extension "libguile-srfi-srfi-4" "scm_init_srfi_4")
|
|
|
|
|
|
;; Reader extension for #f32() and #f64() vectors.
|
|
;;
|
|
(define (hash-f char port)
|
|
(if (or (char=? (peek-char port) #\3)
|
|
(char=? (peek-char port) #\6))
|
|
(let* ((obj (read port)))
|
|
(if (number? obj)
|
|
(cond ((= obj 32)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->f32vector l)
|
|
(error "syntax error in #f32() vector literal"))))
|
|
((= obj 64)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->f64vector l)
|
|
(error "syntax error in #f64() vector literal"))))
|
|
(else
|
|
(error "syntax error in #f...() vector literal")))
|
|
(error "syntax error in #f...() vector literal")))
|
|
#f))
|
|
|
|
|
|
;; Reader extension for #u8(), #u16(), #u32() and #u64() vectors.
|
|
;;
|
|
(define (hash-u char port)
|
|
(if (or (char=? (peek-char port) #\8)
|
|
(char=? (peek-char port) #\1)
|
|
(char=? (peek-char port) #\3)
|
|
(char=? (peek-char port) #\6))
|
|
(let ((obj (read port)))
|
|
(cond ((= obj 8)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->u8vector l)
|
|
(error "syntax error in #u8() vector literal"))))
|
|
((= obj 16)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->u16vector l)
|
|
(error "syntax error in #u16() vector literal"))))
|
|
((= obj 32)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->u32vector l)
|
|
(error "syntax error in #u32() vector literal"))))
|
|
((= obj 64)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->u64vector l)
|
|
(error "syntax error in #u64() vector literal"))))
|
|
(else
|
|
(error "syntax error in #u...() vector literal"))))
|
|
(error "syntax error in #u...() vector literal")))
|
|
|
|
|
|
;; Reader extension for #s8(), #s16(), #s32() and #s64() vectors.
|
|
;;
|
|
(define (hash-s char port)
|
|
(if (or (char=? (peek-char port) #\8)
|
|
(char=? (peek-char port) #\1)
|
|
(char=? (peek-char port) #\3)
|
|
(char=? (peek-char port) #\6))
|
|
(let ((obj (read port)))
|
|
(cond ((= obj 8)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->s8vector l)
|
|
(error "syntax error in #s8() vector literal"))))
|
|
((= obj 16)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->s16vector l)
|
|
(error "syntax error in #s16() vector literal"))))
|
|
((= obj 32)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->s32vector l)
|
|
(error "syntax error in #s32() vector literal"))))
|
|
((= obj 64)
|
|
(let ((l (read port)))
|
|
(if (list? l)
|
|
(list->s64vector l)
|
|
(error "syntax error in #s64() vector literal"))))
|
|
(else
|
|
(error "syntax error in #s...() vector literal"))))
|
|
(error "syntax error in #s...() vector literal")))
|
|
|
|
|
|
;; Install the hash extensions.
|
|
;;
|
|
(read-hash-extend #\f hash-f)
|
|
(read-hash-extend #\u hash-u)
|
|
(read-hash-extend #\s hash-s)
|