zstd/compress/zstd_lazy.c

1494     U32 offset_1 = rep[0], offset_2 = rep[1], savedOffset=0;
1515         if (offset_2 > maxRep) savedOffset = offset_2, offset_2 = 0;
1522         assert(offset_2 <= dictAndPrefixLength);
1668             offset_2 = offset_1; offset_1 = (U32)STORED_OFFSET(offcode);
1681                 U32 const repIndex = current2 - offset_2;
1689                     offcode = offset_2; offset_2 = offset_1; offset_1 = (U32)offcode;   /* swap offset_2 <=> offset_1 */
1700             while ( ((ip <= ilimit) & (offset_2>0))
1701                  && (MEM_read32(ip) == MEM_read32(ip - offset_2)) ) {
1703                 matchLength = ZSTD_count(ip+4, ip+4-offset_2, iend) + 4;
1704                 offcode = offset_2; offset_2 = offset_1; offset_1 = (U32)offcode; /* swap repcodes */
1713     rep[1] = offset_2 ? offset_2 : savedOffset;
1885     U32 offset_1 = rep[0], offset_2 = rep[1];
2009             offset_2 = offset_1; offset_1 = (U32)STORED_OFFSET(offcode);
2023             const U32 repIndex = repCurrent - offset_2;
2027                & (offset_2 <= repCurrent - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
2032                 offcode = offset_2; offset_2 = offset_1; offset_1 = (U32)offcode;   /* swap offset history */
2043     rep[1] = offset_2;