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Re: Fixed-Point Arithmetic Project

From: Robert Dewar <dewar at adacore dot com>
To: Duncan Sands <duncan dot sands at math dot u-psud dot fr>
Cc: gcc at gcc dot gnu dot org, "Fu, Chao-Ying" <fu at mips dot com>, "Thekkath, Radhika" <radhika at mips dot com>, "Stephens, Nigel" <nigel at mips dot com>, Arnaud Charlet <charlet at adacore dot com>
Date: Sat, 23 Sep 2006 11:08:04 -0400
Subject: Re: Fixed-Point Arithmetic Project
References: <3CB54817FDF733459B230DD27C690CEC012BB135@Exchange.mips.com> <200609220924.28577.duncan.sands@math.u-psud.fr>

Duncan Sands wrote:

We are working on a project to add fixed-point arithmetic support to GCC. A GCC project description page is available here http://gcc.gnu.org/wiki/FixedPointArithmetic and we will create a GCC branch in the near future. If you have any suggestions or comments, please respond.
I expect the Ada front-end people will be interested: the Ada language
incorporates binary and decimal fixed point types.  AFAIK, it is all
done using emulation at the moment.

I don't know what emulation means here, obviously there is little hardware support. Ada generates perfectly efficient fixed-point code, but the code is generated in the front end. It might be possible to share back end code if the semantics is exactly what Ada needs.

Best wishes,

Duncan.

References:
- Fixed-Point Arithmetic Project
  - From: Fu, Chao-Ying
- Re: Fixed-Point Arithmetic Project
  - From: Duncan Sands

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