Subject: RE: Floating point in the kernel
To: 'email@example.com' <firstname.lastname@example.org>
From: Cousins, Kevin <Kevin.Cousins@praxa.com.au>
Date: 09/21/1998 10:42:35
>> If he does the computations using fixpoint arithmetics, he won't need any
>> hardware floating point at all, and no kernel modifications.
> This is not really an option, because signal processing code does lots
> of multiplies, and nowadays it is typical for integer multiplies to be
> times slower than floating point ones.
If the signal processing algorithm is appropriately scaled, then all of the
multiplications can be treated as multiplications by a factor of two. What
does that sound like? Full marks if you said "arithmetic shift left"! :)