GopherProxy

	tunion.lisp - clic - Clic is an command line interactive client for gopher writ…
	git clone git://bitreich.org/clic/ git://hg6vgqziawt5s4dj.onion/clic/
	Log
	Files
	Refs
	Tags
	LICENSE
	---
	tunion.lisp (1994B)
	---
	1 ;;;; -- Mode: lisp; indent-tabs-mode: nil --
	2 ;;;
	3 ;;; union.lisp --- Tests on C unions.
	4 ;;;
	5 ;;; Copyright (C) 2005-2006, James Bielman <[email protected]>
	6 ;;;
	7 ;;; Permission is hereby granted, free of charge, to any person
	8 ;;; obtaining a copy of this software and associated documentation
	9 ;;; files (the "Software"), to deal in the Software without
	10 ;;; restriction, including without limitation the rights to use, copy,
	11 ;;; modify, merge, publish, distribute, sublicense, and/or sell copies
	12 ;;; of the Software, and to permit persons to whom the Software is
	13 ;;; furnished to do so, subject to the following conditions:
	14 ;;;
	15 ;;; The above copyright notice and this permission notice shall be
	16 ;;; included in all copies or substantial portions of the Software.
	17 ;;;
	18 ;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	19 ;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	20 ;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	21 ;;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
	22 ;;; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
	23 ;;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	24 ;;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	25 ;;; DEALINGS IN THE SOFTWARE.
	26 ;;;
	27
	28 (in-package #:cffi-tests)
	29
	30 (defcunion uint32-bytes
	31 (int-value :unsigned-int)
	32 (bytes :unsigned-char :count 4))
	33
	34 (defctype uint32-bytes (:union uint32-bytes))
	35
	36 (defun int-to-bytes (n)
	37 "Convert N to a list of bytes using a union."
	38 (with-foreign-object (obj 'uint32-bytes)
	39 (setf (foreign-slot-value obj 'uint32-bytes 'int-value) n)
	40 (loop for i from 0 below 4
	41 collect (mem-aref
	42 (foreign-slot-value obj 'uint32-bytes 'bytes)
	43 :unsigned-char i))))
	44
	45 (deftest union.1
	46 (let ((bytes (int-to-bytes #x12345678)))
	47 (cond ((equal bytes '(#x12 #x34 #x56 #x78))
	48 t)
	49 ((equal bytes '(#x78 #x56 #x34 #x12))
	50 t)
	51 (t bytes)))
	52 t)