Subject: Re: Floating point calculation in the kernel
To: None <tech-kern@NetBSD.org>
From: der Mouse <mouse@Rodents.Montreal.QC.CA>
List: tech-kern
Date: 02/24/2005 12:45:52
> Your options are to re-code your neural net using fixed-point
> arithmetic, or to investigate compiling it with -msoft-float.
Or to use a port on which this dance is unnecessary (VAX comes to mind;
the VAX FPU is tightly integrated with the main CPU and doesn't have
anything like FPU-disabled exceptions or context to save/restore).
Or tweak the port you're using to save/restore FPU state when your code
wants to use it. (Though I suspect using the word "tweak" may
underestimate the work involved in this option.)
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