On Fri, 27 Jun 2003 17:58:50 GMT, Jonathan Kirwan
wrote:

Hmm. Are you *THE* Jack Crenshaw? The "Let's Build A Compiler"
and "Math Toolkit for Real-Time Programming" Jack _W._ Crenshaw?

Actually, I think I've answered my own question, here. You
really *are* that Jack.

What clues me in is your use of "phantom" he

mantissa -- 23 bits + phantom bit in bit 24.

The same term used on page 50 in "Math toolkit..."

In my own experience, even that predating the Intel 8087 or the
IEEE standardization, it was called a "hidden bit" notation. I
don't know where "phantom" comes from, as my own reading managed
to completely miss it.

So, a hearty "Hello" from me!

Jon