From: Colin Paul Gloster <Colin_Paul_Gloster@ACM.org>
Subject: Re: Simulation of fixed point in c WITH DIFFERENT BIT-WIDTH
Date: Wed, 2 Nov 2005 10:57:34 +0000 (UTC)
Date: 2005-11-02T10:57:34+00:00 [thread overview]
Message-ID: <dka62u$8pl$1@hudsucker.umdac.umu.se> (raw)
In-Reply-To: 1130690498.388857.225170@g49g2000cwa.googlegroups.com
Mnamky posted to news:comp.lang.ada :
"Hi all;
Consider the following exaple
y = x * b'
where x is 12-bit wordlength and 11-bit fraction
and b is 16-bit wordlength and 14-bit fraction
simulation of this code is rather easy im Matlab but how could we do a
full analysis of this code in C with a good precision?"
I fail to see the relevance of this to Ada. In C, you could use ints and
interpret some bits as an integer and some bits as a vulgar fraction, as
in computer games books for 386s and 486s (before Pentiums which had
faster floating point support than integer support) in the 1990s, such
as "Building a 3D Engine in C++" and La Mothe; Ratcliff; et al.,
"Tricks of the Game Programming Gurus", SAMS Publishing.
A worse way would be to use bitfields.
next prev parent reply other threads:[~2005-11-02 10:57 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-30 16:41 Simulation of fixed point in c WITH DIFFERENT BIT-WIDTH mnamky
2005-10-30 17:00 ` Dmitry A. Kazakov
2005-10-30 21:46 ` Gautier Write-only
2005-11-01 2:50 ` Steve
2005-11-02 10:42 ` Colin Paul Gloster
2005-11-02 20:43 ` Gautier Write-only
2005-11-03 6:13 ` Simon Wright
2005-11-03 10:46 ` Colin Paul Gloster
2005-11-03 13:47 ` Robert A Duff
2005-11-03 14:33 ` Dmitry A. Kazakov
2005-11-03 18:19 ` Jeffrey R. Carter
2005-11-03 20:55 ` Simon Wright
2005-11-02 10:57 ` Colin Paul Gloster [this message]
2005-11-02 14:49 ` Martin Krischik
2005-11-02 20:40 ` Gautier Write-only
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