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fix(query): set correct shift bits.

This commit is contained in:
Haojun Liao 2023-02-20 23:43:30 +08:00
parent e10ec84154
commit ab3fb17a74
1 changed files with 4 additions and 4 deletions
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8
source/util/src/tcompression.c
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@ -315,8 +315,8 @@ int32_t tsDecompressINTImp(const char *const input, const int32_t nelements, cha
__m256i inc = _mm256_set1_epi64x(bit << 2);
for (int32_t i = 0; i < batch; ++i) {
__m256i after = _mm256_srlv_epi64(base, shiftBits);
__m256i zigzagVal = _mm256_and_si256(after, maskVal);
base = _mm256_srlv_epi64(base, shiftBits);
__m256i zigzagVal = _mm256_and_si256(base, maskVal);
// ZIGZAG_DECODE(T, v) (((v) >> 1) ^ -((T)((v)&1)))
__m256i signmask = _mm256_and_si256(_mm256_set1_epi64x(1), zigzagVal);
@ -327,8 +327,8 @@ int32_t tsDecompressINTImp(const char *const input, const int32_t nelements, cha
// calculate the cumulative sum (prefix sum) for each number
// decode[0] = prev_value + final[0]
// decode[1] = decode[0] + final[1] -----> prev_value + final[0] + final[1]
// decode[2] = decode[1] + final[1] -----> prev_value + final[0] + final[1] + final[2]
// decode[3] = decode[2] + final[1] -----> prev_value + final[0] + final[1] + final[2] + final[3]
// decode[2] = decode[1] + final[2] -----> prev_value + final[0] + final[1] + final[2]
// decode[3] = decode[2] + final[3] -----> prev_value + final[0] + final[1] + final[2] + final[3]
// 1, 2, 3, 4
//+ 0, 1, 2, 3