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

support for ZSTD_REP_NUM=3

Browse Source
This commit is contained in:
inikep
2016-04-05 10:30:05 +02:00
parent 74e3a7ba4c
commit ba73d1bb6b
4 changed files with 38 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/zstd_compress.c
+5 -6
View File
@@ -1736,16 +1736,19 @@ void ZSTD_compressBlock_lazy_generic(ZSTD_CCtx* ctx,
/* store sequence */
_storeSequence:
{
#if ZSTD_REP_NUM == 4
if (offset >= ZSTD_REP_NUM) {
#if ZSTD_REP_NUM > 3
rep[3] = rep[2];
#endif
rep[2] = rep[1];
rep[1] = rep[0];
rep[0] = offset - ZSTD_REP_MOVE;
} else {
if (offset != 0) {
size_t temp = rep[offset];
#if ZSTD_REP_NUM > 3
if (offset > 2) rep[3] = rep[2];
#endif
if (offset > 1) rep[2] = rep[1];
if (offset > 0) rep[1] = rep[0];
rep[0] = temp;
@@ -1753,11 +1756,7 @@ _storeSequence:
if (offset<=1 && start==anchor) offset = 1-offset;
}
#else
if (offset >= ZSTD_REP_NUM) {
rep[1] = rep[0]; rep[0] = offset - ZSTD_REP_MOVE;
}
#endif
size_t const litLength = start - anchor;
ZSTD_storeSeq(seqStorePtr, litLength, anchor, offset, matchLength-MINMATCH);