From: solar <solar@546481bc-9713-0410-bf18-d3337bbf4a3e>
Date: Wed, 28 May 2008 06:11:09 +0000 (+0000)
Subject: Added.
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=e91260b98143476c2223a18e83bcea769f4f5c34;p=fw%2Fpdclib

Added.


git-svn-id: https://srv7.svn-repos.de/dev34/pdclib/trunk@270 546481bc-9713-0410-bf18-d3337bbf4a3e
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diff --git a/platform/example/Readme.txt b/platform/example/Readme.txt
new file mode 100644
index 0000000..5ec24bd
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+++ b/platform/example/Readme.txt
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+$Id$
+
+"Example" Platform Overlay
+==========================
+
+This is an example platform overlay, as described in the main Readme.txt of
+this archive. For ease of development, it applies (and tests) correctly on the
+machine of the author; no other guarantees can be given.
+It should give you a good idea of what is REQUIRED to make a copy of PDCLib
+work. There is a lot more you could do, and even some things you SHOULD do, in
+order to experience anything but abysmal performance:
+
+- Read / write operations on binary streams, and even on text streams for
+  machines that do not do any text conversion, can be made much more efficient
+  by using some sort of page buffer instead of the linear buffer implemented
+  here. It requires some special and platform-dependent manipulations, though,
+  which is why it is not done by default.
+
+- Anything relating to floating point logic is written in generic C. While
+  this is (hopefully) highly portable and should get you started on your
+  platform of choice, it is also highly inefficient and should be replaced by
+  inline assembly. Just make sure that your assembly keeps all the promises
+  the C library makes.
+