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| ;;; Extensions to SRFI-4 | |
| ;; Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc. | |
| ;; | |
| ;; This library is free software; you can redistribute it and/or | |
| ;; modify it under the terms of the GNU Lesser General Public | |
| ;; License as published by the Free Software Foundation; either | |
| ;; version 3 of the License, or (at your option) any later version. | |
| ;; | |
| ;; This library 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 | |
| ;; Lesser General Public License for more details. | |
| ;; | |
| ;; You should have received a copy of the GNU Lesser General Public | |
| ;; License along with this library; if not, write to the Free Software | |
| ;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| ;;; Commentary: | |
| ;; Extensions to SRFI-4. Fully documented in the Guile Reference Manual. | |
| ;;; Code: | |
| (define-module (srfi srfi-4 gnu) | |
| #:use-module (rnrs bytevectors) | |
| #:use-module (srfi srfi-4) | |
| #:export (;; Complex numbers with 32- and 64-bit components. | |
| c32vector? make-c32vector c32vector c32vector-length c32vector-ref | |
| c32vector-set! c32vector->list list->c32vector | |
| c64vector? make-c64vector c64vector c64vector-length c64vector-ref | |
| c64vector-set! c64vector->list list->c64vector | |
| make-srfi-4-vector | |
| ;; Somewhat polymorphic conversions. | |
| any->u8vector any->s8vector any->u16vector any->s16vector | |
| any->u32vector any->s32vector any->u64vector any->s64vector | |
| any->f32vector any->f64vector any->c32vector any->c64vector)) | |
| (define make-srfi-4-vector (@@ (srfi srfi-4) make-srfi-4-vector)) | |
| (define (bytevector-c32-native-ref v i) | |
| (make-rectangular (bytevector-ieee-single-native-ref v i) | |
| (bytevector-ieee-single-native-ref v (+ i 4)))) | |
| (define (bytevector-c32-native-set! v i x) | |
| (bytevector-ieee-single-native-set! v i (real-part x)) | |
| (bytevector-ieee-single-native-set! v (+ i 4) (imag-part x))) | |
| (define (bytevector-c64-native-ref v i) | |
| (make-rectangular (bytevector-ieee-double-native-ref v i) | |
| (bytevector-ieee-double-native-ref v (+ i 8)))) | |
| (define (bytevector-c64-native-set! v i x) | |
| (bytevector-ieee-double-native-set! v i (real-part x)) | |
| (bytevector-ieee-double-native-set! v (+ i 8) (imag-part x))) | |
| ((@@ (srfi srfi-4) define-bytevector-type) c32 c32-native 8) | |
| ((@@ (srfi srfi-4) define-bytevector-type) c64 c64-native 16) | |
| (define-macro (define-any->vector . tags) | |
| `(begin | |
| ,@(map (lambda (tag) | |
| `(define (,(symbol-append 'any-> tag 'vector) obj) | |
| (cond ((,(symbol-append tag 'vector?) obj) obj) | |
| ((pair? obj) (,(symbol-append 'list-> tag 'vector) obj)) | |
| ((and (array? obj) (eqv? 1 (array-rank obj))) | |
| (let* ((len (array-length obj)) | |
| (v (,(symbol-append 'make- tag 'vector) len))) | |
| (let lp ((i 0)) | |
| (if (< i len) | |
| (begin | |
| (,(symbol-append tag 'vector-set!) | |
| v i (array-ref obj i)) | |
| (lp (1+ i))) | |
| v)))) | |
| (else (scm-error 'wrong-type-arg #f "" '() (list obj)))))) | |
| tags))) | |
| (define-any->vector u8 s8 u16 s16 u32 s32 u64 s64 f32 f64 c32 c64) | |