Style: Add Comments to Variables and Move a Couple into the Loop
diff --git a/lib/compress/zstd_double_fast.c b/lib/compress/zstd_double_fast.c
index c58e5cd..db95fe6 100644
--- a/lib/compress/zstd_double_fast.c
+++ b/lib/compress/zstd_double_fast.c
@@ -73,24 +73,24 @@
U32 offset;
U32 curr;
+ /* how many positions to search before increasing step size */
const size_t kStepIncr = 1 << kSearchStrength;
+ /* the position at which to increment the step size if no match is found */
const BYTE* nextStep;
- size_t step;
+ size_t step; /* the current step size */
- size_t hl0;
- size_t hs0;
- size_t hl1;
+ size_t hl0; /* the long hash at ip */
+ size_t hl1; /* the long hash at ip1 */
- U32 idxl0;
- U32 idxs0;
- U32 idxl1;
+ U32 idxl0; /* the long match index for ip */
+ U32 idxl1; /* the long match index for ip1 */
- const BYTE* matchl0;
- const BYTE* matchs0;
- const BYTE* matchl1;
+ const BYTE* matchl0; /* the long match for ip */
+ const BYTE* matchs0; /* the short match for ip */
+ const BYTE* matchl1; /* the long match for ip1 */
- const BYTE* ip = istart;
- const BYTE* ip1;
+ const BYTE* ip = istart; /* the current position */
+ const BYTE* ip1; /* the next position */
DEBUGLOG(5, "ZSTD_compressBlock_doubleFast_noDict_generic");
@@ -120,9 +120,9 @@
/* Main Search Loop */
do {
+ const size_t hs0 = ZSTD_hashPtr(ip, hBitsS, mls);
+ const U32 idxs0 = hashSmall[hs0];
curr = (U32)(ip-base);
- hs0 = ZSTD_hashPtr(ip, hBitsS, mls);
- idxs0 = hashSmall[hs0];
matchs0 = base + idxs0;
hashLong[hl0] = hashSmall[hs0] = curr; /* update hash tables */
