org.jcsp.plugNplay
Class Nand
java.lang.Object
org.jcsp.plugNplay.Nand
- All Implemented Interfaces:
- CSProcess
public final class Nand
- extends Object
- implements CSProcess
Bitwise nands two Integer streams to one stream.
Process Diagram
in0 ______
-->--| | out
in1 | Nand |-->--
-->--|______|
Description
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 NAND on the values of the
two Numbers and writes the result as a new Integer to its output channel.
Channel Protocols
Input Channels |
in1,in2 |
java.lang.Number |
Both Channels can accept data from any subclass of Number. It is
possible to send Floats down one channel Nand 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 the use of this process in a small program.
The program also uses some of the other building block processes.
It generates a sequence of numbers, rounds each odd number down to
the nearest even number, negates them and prints them to the screen.
import org.jcsp.lang.*;
import org.jcsp.plugNplay.*;
public class NandExample {
public static void main (String[] argv) {
final One2OneChannel a = Channel.one2one ();
final One2OneChannel b = Channel.one2one ();
final One2OneChannel c = Channel.one2one ();
final One2OneChannel d = Channel.one2one ();
new Parallel (
new CSProcess[] {
new Numbers (a.out ()),
new Generate (b.out (), Integer.MAX_VALUE - 1),
new Nand (a.in (), b.in (), c.out ()),
new Successor (c.in (), d.out ()),
new Printer (d.in (), "--> ", "\n")
}
).run ();
}
}
- Author:
- P.H. Welch and P.D. Austin
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 |
Nand
public Nand(ChannelInput in1,
ChannelInput in2,
ChannelOutput out)
- Construct a new Nand process with the input Channels in1 and in2 and the
output Channel out. The ordering of the Channels in1 and in2 make
no difference to the functionality of this process.
- Parameters:
in1
- the first input Channelin2
- the second input Channelout
- the output Channel
run
public void run()
- The main body of this process.
- Specified by:
run
in interface CSProcess
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