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Add a 9% faster ZX02 decompressor

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This commit is contained in:
Colin Leroy-Mira
2025-10-26 15:36:55 +01:00
parent 84bcd53c45
commit f3e43cc5c5
4 changed files with 624 additions and 0 deletions
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doc/funcref.sgml
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@@ -920,6 +920,7 @@ communication, see also <tt>testcode/lib/ser-test.c</tt>.
<itemize>
<item><ref id="decompress_zx02" name="decompress_zx02">
<item><ref id="decompress_zx02_fast" name="decompress_zx02_fast">
</itemize>
@@ -3580,6 +3581,28 @@ smallest and has the best compression ratio.
</quote>
<sect1>decompress_zx02_fast<label id="decompress_zx02_fast"><p>
<quote>
<descrip>
<tag/Function/Uncompress a ZX02 buffer.
<tag/Header/<tt/<ref id="zx02.h" name="zx02.h">/
<tag/Declaration/<tt/void decompress_zx02_fast (const unsigned char* src, unsigned char* const dst);/
<tag/Description/<tt/decompress_zx02_fast/ uncompresses a ZX02 buffer with format 2.
<tag/Notes/<itemize>
<item>Use <tt/zx02 input.bin output.zx02/ to compress your input.
<item>The project and compressor can be found at <url url="https://github.com/dmsc/zx02">
<item>ZX02 is the slowest decompressor shipped with cc65 runtime, but is also the
smallest and has the best compression ratio.
<item><tt/decompress_zx02_fast/ is 9% faster than <tt/decompress_zx02/, but 34
bytes bigger.
</itemize>
<tag/Availability/cc65
<tag/Example/None.
</descrip>
</quote>
<sect1>detect_c128<label id="detect_c128"><p>
<quote>