CSP for Java
(JCSP) 1.1-rc4

Class And

  extended by org.jcsp.plugNplay.And
All Implemented Interfaces:

public final class And
extends Object
implements CSProcess

Bitwise ands two Integer streams to one stream.

Process Diagram


This is a process with an infinite loop that waits for a Object of type Number to be sent down each of its input channels. The loop body then calculates the bitwise AND on the values of the two Numbers and writes the result as a new Integer to its output channel.

Channel Protocols

Input Channels
in0, in1 java.lang.Number Both channels can accept data from any subclass of Number. It is possible to send Floats down one channel and Integers down the other. However all values will be converted to ints.
Output Channels
out java.lang.Integer The output will always be of type Integer.


The following example shows how to use the And process in a small program. The program also uses some of the other building block processes. The program generates a sequence of numbers and rounds each odd number down to the nearest even number and prints this on the screen.
 import org.jcsp.lang.*;
 import org.jcsp.plugNplay.*;
 public class AndExample {
   public static void main (String[] argv) {
     final One2OneChannel a = Channel.one2one ();
     final One2OneChannel b = Channel.one2one ();
     final One2OneChannel c = Channel.one2one ();
     new Parallel (
       new CSProcess[] {
         new Numbers (a.out ()),
         new Generate (b.out (), Integer.MAX_VALUE - 1),
         new And (a.in (), b.in (), c.out ()),
         new Printer (c.in (), "--> ", "\n")
     ).run ();

P.H. Welch and P.D. Austin

Constructor Summary
And(ChannelInput in0, ChannelInput in1, ChannelOutput out)
          Construct a new And process with the input Channels in0 and in1 and the output Channel out.
Method Summary
 void run()
          The main body of this process.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail


public And(ChannelInput in0,
           ChannelInput in1,
           ChannelOutput out)
Construct a new And process with the input Channels in0 and in1 and the output Channel out. The ordering of the Channels in0 and in1 make no difference to the functionality of this process.

in0 - the first input Channel
in1 - the second input Channel
out - the output Channel
Method Detail


public void run()
The main body of this process.

Specified by:
run in interface CSProcess

CSP for Java
(JCSP) 1.1-rc4

Submit a bug or feature to jcsp-team@kent.ac.uk
Version 1.1-rc4 of the JCSP API Specification (Copyright 1997-2008 P.D.Austin and P.H.Welch - All Rights Reserved)
Java is a trademark or registered trademark of Sun Microsystems, Inc. in the US and other countries.