Mainframe floating point math implementation.

[Noel Chiappa]

    > From: Charles Anthony

    > the missing piece of the rounding algorithim has been identified:
    >     Only round if the mantissa was shifted more then 71 bits.

Wow. I'm really impressed that they implemented that in hardware, back then!

Then again, they threw so many gates at the Multics CPU, I guess they figured
a few more wouldn't matter... ;-)

	Noel