Path: chuka.playstation.co.uk!news
From: Alex Herbert <aherbert@ndirect.co.uk>
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: fixed point
Date: Wed, 15 Jul 1998 18:19:13 +0000
Organization: PlayStation Net Yaroze (SCEE)
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Jamin Frederick wrote:

> Where is fixed point used?  Is it only for normals?
>

Fixed point is used all over the place, especially with rotation
matrices.  The Library Reference does indicate where fixed point is
used, but it is not clear initially.  You may have noticed sets of
numbers it brackets e.g. (1,3,12).  This indicates 1 sign bit, 3 whole
bits, and 12 fractional bits.

Does this help?

Herbs