jcsp.plugNplay
Class And

java.lang.Object
  |
  +--jcsp.plugNplay.And

All Implemented Interfaces:

CSProcess

public final class And

extends Object

implements CSProcess

Bitwise ands two Integer streams to one stream.

Process Diagram

    in0  _______
   -->--|       | out
    in1 |  And  |-->--
   -->--|_______|
 

Description

The And class is a process which has an infinite loop that waits a Object of type Number to be sent down each of the in0 and in1 Channels. The process then calculates the bitwise AND on the intValue() of the two Numbers then write the result as a new Integer down the out 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.

Example

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 jcsp.lang.*;
 import jcsp.util.*;
 
 public class AndExample {
   public static void main (String[] argv) {
 
     Channel a = new One2OneChannel ();
     Channel b = new One2OneChannel ();
     Channel c = new One2OneChannel ();
 
     new Parallel (
       new CSProcess[] {
         new Numbers (a),
         new And (a, b, c),
         new Printer (c),
         new CSProcess () {
           public void run () {
             Integer andVal = new Integer (Integer.MAX_VALUE - 1);
             while (true) {
               b.write (andVal);
             }
           }
         }
       }
     ).run ();
 
   }
 
 }
 

Author:

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

And

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.

Parameters:

in0 - the first input Channel

in1 - the second input Channel

out - the output Channel

Method Detail

run

public void run()

The main body of this process.

Specified by:

run in interface CSProcess