edu.harvard.hul.ois.jhove.module.aiff
Class ExtDouble

java.lang.Object
  edu.harvard.hul.ois.jhove.module.aiff.ExtDouble

public class ExtDouble
extends java.lang.Object

Code to deal with the 80-bit floating point (extended double) numbers which occur in AIFF files. Should also be applicable in general. Java has no built-in support for IEEE 754 extended double numbers. Thus, we have to unpack the number and convert it to a double by hand. There is, of course, loss of precision. This isn't designed for high-precision work; as the standard disclaimer says, don't use it for life support systems or nuclear power plants.

Author:

Gary McGath

Constructor Summary

ExtDouble(byte[] rawData)
Constructor.

Method Summary

double

toDouble() Convert the value to a Java double.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtDouble

public ExtDouble(byte[] rawData)

Constructor.

Parameters:

rawData - A 10-byte array representing the number in the sequence in which it was stored.

Method Detail

toDouble

public double toDouble()

Convert the value to a Java double. This results in loss of precision. If the number is out of range, results aren't guaranteed.