com.mockturtlesolutions.snifflib.util

Class Binary

java.lang.Object

com.mockturtlesolutions.snifflib.util.Binary

public class Binary
extends java.lang.Object

Class for doing various tricks with the binary representations of primitive numbers.

Constructor Summary

Constructors

Constructor and Description
Binary()

Method Summary

Methods

Modifier and Type	Method and Description
static int	bitInvPerm(int J, int[] Perm) Inverse permute the bits of an integer.
static int	bitPerm(int J, int[] Perm) Permute the bits of an integer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Binary

public Binary()

Method Detail

bitPerm

public static int bitPerm(int J,
          int[] Perm)

Permute the bits of an integer. The int[N] Perm specifies the permutation and must be a rearrangement of the integers 0,1,...,N-1.

bitInvPerm

public static int bitInvPerm(int J,
             int[] Perm)

Inverse permute the bits of an integer. The int[N] Perm specifies the permutation and must be a rearrangement of the integers 0,1,...,N-1. Note that Perm acutally specifies the forward permuation that would be used by bitPerm.