Comparing double and float values

[Matthew Ong]

Hi jen,

If you really want to to compare bit by bit it should be possible to
cast the floating point values and then perform the comparison.

Please see the URL:
http://download.oracle.com/javase/1.4.2/docs/api/java/lang/Double.html#doubleToRawLongBits%28double%29

Casting does that looses the value decimal point value?

The most important
Returns a representation of the specified floating-point value according to the
IEEE 754 floating-point "double format" bit layout, preserving Not-a-Number (NaN)
values.

underneath the source code, it is just C code:

union {
    double dval;
    long lval;
}

They fill dval to get lval and vs.

That is important if u use that for searching within a Hashtable like:

double[string] myvals; // look for the key string using double?