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Class rpi.goldsd.container.Real 

java.lang.Object
   |
   +----rpi.goldsd.container.Real
public class Real
extends Object
implements Hashable
The Real class provides a wrapper-class for the primitive data type double. The actual double value (the double instance variable) is a public instance variable.

Version:
1.0, 4/16/98
Author:
David Goldschmidt
See Also:
Comparable, Hashable

Variable Index

o MAX_VALUE
The largest value of type Real.
o MIN_VALUE
The smallest value of type Real.
o value
The underlying primitive data type.

Constructor Index

o Real()
Constructs a Real object with a default value of 0.0.
o Real(double)
Initializes the underlying double primitive data type.

Method Index

o hash()
Returns the hash value of this Real object, which is simply the underlying double value, truncated.
o hash(int)
Returns the hash value of this Real object, based on the given hashtable size.
o isEqualTo(Comparable)
Returns true if this Real object is equal to the given Comparable argument C, which must be of type Real.
o isLessThan(Comparable)
Returns true if this Real object is less than the given Comparable argument C, which must be of type Real.
o toString()
Displays this Real object in the form of a String object.

Variables

o MIN_VALUE 
 public static final double MIN_VALUE
The smallest value of type Real.

o MAX_VALUE 
 public static final double MAX_VALUE
The largest value of type Real.

o value 
 public double value
The underlying primitive data type.

Constructors

o Real 
 public Real(double v)
Initializes the underlying double primitive data type.

Parameters:
v - the initial double value.
o Real 
 public Real()
Constructs a Real object with a default value of 0.0.

Methods

o isEqualTo 
 public boolean isEqualTo(Comparable C) throws IllegalArgumentException
Returns true if this Real object is equal to the given Comparable argument C, which must be of type Real.

Parameters:
C - the right-hand side of the comparison.
Returns:
true if this Real object is equal to the given Real object C; false otherwise.
Throws: IllegalArgumentException
if the Comparable argument is not of type Real.
o isLessThan 
 public boolean isLessThan(Comparable C) throws IllegalArgumentException
Returns true if this Real object is less than the given Comparable argument C, which must be of type Real.

Parameters:
C - the right-hand side of the comparison.
Returns:
true if this Real object is less than the given Real object C; false otherwise.
Throws: IllegalArgumentException
if the Comparable argument is not of type Real.
o hash 
 public int hash()
Returns the hash value of this Real object, which is simply the underlying double value, truncated. If a more complex hashing function is required, this method may be overridden.

Returns:
the hash value of this Real object.
o hash 
 public int hash(int tableSize)
Returns the hash value of this Real object, based on the given hashtable size.

Parameters:
tableSize - the size of the hashtable making use of this Real object.
o toString 
 public String toString()
Displays this Real object in the form of a String object. This method simply returns a String representation of the underlying double value.

Returns:
a String representing this Real object.
Overrides:
toString in class Object 
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