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-;;; srfi-4.scm --- Homogeneous Numeric Vector Datatypes
-
-;; Copyright (C) 2001, 2002 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.
-
-;;; Author: Martin Grabmueller <mgrabmue@cs.tu-berlin.de>
-
-;;; Commentary:
-
-;; This module implements homogeneous numeric vectors as defined in SRFI-4.
-;; This module is fully documented in the Guile Reference Manual.
-
-;;; Code:
-
-(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)
-
-;;; srfi-4.scm ends here