ddidderr/zstd-rs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

factored the logic selecting lowest match index

Browse Source 
as suggested by @terrelln
This commit is contained in:
Yann Collet
2019-08-05 15:18:43 +02:00
parent 0b0b83e8f3
commit facbe8b2c2
5 changed files with 19 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/compress/zstd_fast.c
+1 -5
View File
@@ -381,11 +381,7 @@ static size_t ZSTD_compressBlock_fast_extDict_generic(
const BYTE* ip = istart;
const BYTE* anchor = istart;
const U32 endIndex = (U32)((size_t)(istart - base) + srcSize);
const U32 maxDistance = 1U << cParams->windowLog;
const U32 validLowest = ms->window.lowLimit;
const int isDictionary = (ms->loadedDictEnd != 0);
const U32 withinWindow = (endIndex - validLowest > maxDistance) ? endIndex - maxDistance : validLowest;
const U32 lowLimit = isDictionary ? validLowest : withinWindow;
const U32 lowLimit = ZSTD_getLowestMatchIndex(ms, endIndex, cParams->windowLog);
const U32 dictStartIndex = lowLimit;
const BYTE* const dictStart = dictBase + dictStartIndex;
const U32 dictLimit = ms->window.dictLimit;