X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=examples%2Funion.lisp;fp=examples%2Funion.lisp;h=856ac4935787987d2db3a2ea561de1e81fd3ecd9;hb=a95b9a217335917d96b8c0cced4f49c3e4846115;hp=0000000000000000000000000000000000000000;hpb=bcd9fb3deb580f2976e7505a7433795ed6ad1bb3;p=uffi.git

diff --git a/examples/union.lisp b/examples/union.lisp
new file mode 100644
index 0000000..856ac49
--- /dev/null
+++ b/examples/union.lisp
@@ -0,0 +1,89 @@
+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          union.cl
+;;;; Purpose:       UFFI Example file to test unions
+;;;; Programmer:    Kevin M. Rosenberg
+;;;; Date Started:  Mar 2002
+;;;;
+;;;; $Id: union.lisp,v 1.1 2002/09/30 10:02:36 kevin Exp $
+;;;;
+;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;;
+;;;; UFFI users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
+;;;; *************************************************************************
+
+(in-package :cl-user)
+
+(uffi:def-union tunion1 
+    (char :char)
+  (int :int)
+  (uint :unsigned-int)
+  (sf :float)
+  (df :double))
+
+(defun run-union-1 ()
+  (let ((u (uffi:allocate-foreign-object 'tunion1)))
+    (setf (uffi:get-slot-value u 'tunion1 'uint)
+      ;; little endian
+      #-(or sparc sparc-v9 powerpc ppc)
+      (+ (* 1 (char-code #\A))
+	 (* 256 (char-code #\B))
+	 (* 65536 (char-code #\C))
+	 (* 16777216 128))
+      ;; big endian
+      #+(or sparc sparc-v9 powerpc ppc)
+      (+ (* 16777216 (char-code #\A))
+	 (* 65536 (char-code #\B))
+	 (* 256 (char-code #\C))
+	 (* 1 128)))
+    (format *standard-output* "~&Should be #\A: ~S" 
+	    (uffi:ensure-char-character 
+	     (uffi:get-slot-value u 'tunion1 'char)))
+    (format *standard-output* "~&Should be negative number: ~D" 
+	    (uffi:get-slot-value u 'tunion1 'int))
+    (format *standard-output* "~&Should be positive number: ~D"
+	    (uffi:get-slot-value u 'tunion1 'uint))
+    (uffi:free-foreign-object u))
+  (values))
+
+#+test-uffi
+(defun test-union-1 ()
+  (let ((u (uffi:allocate-foreign-object 'tunion1)))
+    (setf (uffi:get-slot-value u 'tunion1 'uint)
+	  #-(or sparc sparc-v9 powerpc ppc)
+	  (+ (* 1 (char-code #\A))
+	     (* 256 (char-code #\B))
+	     (* 65536 (char-code #\C))
+	     (* 16777216 128))
+	  #+(or sparc sparc-v9 powerpc ppc)
+	  (+ (* 16777216 (char-code #\A))
+	     (* 65536 (char-code #\B))
+	     (* 256 (char-code #\C))
+	     (* 1 128))) ;set signed bit
+    (util.test:test (uffi:ensure-char-character 
+		(uffi:get-slot-value u 'tunion1 'char))
+	       #\A
+	       :test #'eql
+	       :fail-info "Error with union character")
+    #-(or sparc sparc-v9 mcl)
+    (util.test:test (> 0 (uffi:get-slot-value u 'tunion1 'int))
+	       t
+	       :fail-info
+	       "Error with negative int in union")
+    (util.test:test (plusp (uffi:get-slot-value u 'tunion1 'uint))
+	       t
+	       :fail-info
+	       "Error with unsigned int in union")
+    (uffi:free-foreign-object u))
+  (values))
+
+#+examples-uffi
+(run-union-1)
+
+
+#+test-uffi
+(test-union-1)