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Moved documentation to funcref.

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IrgendwerA8 2019-03-21 21:04:24 +01:00 committed by Oliver Schmidt
parent db8bd84a82
commit 435f417c64
3 changed files with 29 additions and 41 deletions
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29
doc/funcref.sgml
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@ -578,6 +578,12 @@ communication, see also <tt>testcode/lib/ser-test.c</tt>.
<item><ref id="signal" name="signal">
</itemize>
<sect1><tt/specialmath.h/<label id="specialmath.h"><p>
<itemize>
<item><ref id="_mul20" name="_mul20">
<item><ref id="_mul40" name="_mul40">
</itemize>
<sect1><tt/stdarg.h/<label id="stdarg.h"><p>
@ -1020,6 +1026,29 @@ It returns 1 if it does.
</descrip>
</quote>
<sect1>_mul20<label id="_mul20"><p>
<quote>
<descrip>
<tag/Function/Multiplies argument by 20.
<tag/Header/<tt/<ref id="specialmath.h" name="specialmath.h">/
<tag/Declaration/<tt/unsigned int __fastcall__ _mul20(unsigned char value);/
<tag/Description/Speed optimized function to multiply an 8 bit unsigned value by 20 to get a 16 bit result.
<tag/Availability/cc65
</descrip>
</quote>
<sect1>_mul40<label id="_mul40"><p>
<quote>
<descrip>
<tag/Function/Multiplies argument by 40.
<tag/Header/<tt/<ref id="specialmath.h" name="specialmath.h">/
<tag/Declaration/<tt/unsigned int __fastcall__ _mul40(unsigned char value);/
<tag/Description/Speed optimized function to multiply an 8 bit unsigned value by 40 to get a 16 bit result.
<tag/Availability/cc65
</descrip>
</quote>
<sect1>_poserror<label id="_poserror"><p>

3
doc/index.sgml
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@ -97,9 +97,6 @@
Describes Christian Kr&uuml;ger's macro package for writing self modifying
assembler code.
<tag><htmlurl url="specialmath.html" name="specialmath.html"></tag>
Library for speed optimized math functions.
<tag><url name="6502 Binary Relocation Format document"
url="http://www.6502.org/users/andre/o65/fileformat.html"></tag>
Describes the o65 file format that is used for dynamically loadable modules

38
doc/specialmath.sgml
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@ -1,38 +0,0 @@
<!doctype linuxdoc system>
<article>
<title>Special math functions
<author>Christian Kr&uuml;ger
<abstract>
This library provides functions for speed optimized math operations.
</abstract>
<!-- Table of contents -->
<toc>
<!-- Begin the document -->
<sect>Multiplication<p>
When accessing screen memory often a multiplication of the vertical position is needed to calculate
the target address. A quite common horizontal span for 8-bit systems is 20 or 40 bytes (beside e.g. 32 bytes, where the multiplication can be accomplished by shifting 5 times).
<p>
<tscreen><verb>
unsigned int __fastcall__ _mul20(unsigned char value);
</verb></tscreen>
The 8 bit <tt>value</tt> is multiplied by 20 and returned as 16 bit value.
</p>
<p>
<tscreen><verb>
unsigned int __fastcall__ _mul40(unsigned char value);
</verb></tscreen>
The 8 bit <tt>value</tt> is multiplied by 40 and returned as 16 bit value.
</p>
</article>