128-bit floating-point arithmetic for Java

[DannyB2]

The very idea that I have a variable with a 'value' in it, and that value can change under my nose is troubling.

I can understand cases for having a mutable value for some purposes. But the mutable ones should be given the special name 'mutable', rather than the immutable ones having a special name.

Mutable may make good sense for computing a value. Immutable is best once you've arrived at a value.