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| author | Otmar Ertl <otmar.ertl@gmail.com> | 2018-03-14 21:00:06 +0100 |
|---|---|---|
| committer | Otmar Ertl <otmar.ertl@gmail.com> | 2018-03-14 21:00:06 +0100 |
| commit | 15d7e617016220a33b7c98f0c0c0dfd219e2e330 (patch) | |
| tree | 17f2fff4b664a8ff03b2bbcd963accf7587b1de7 /src/hyperloglog.c | |
| parent | 97bde9f6236b65aa5a9165554f7ca690b59c2903 (diff) | |
| download | redis-15d7e617016220a33b7c98f0c0c0dfd219e2e330.tar.gz | |
fixed compilation error when using clang as reported by michael-grunder
Diffstat (limited to 'src/hyperloglog.c')
| -rw-r--r-- | src/hyperloglog.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/hyperloglog.c b/src/hyperloglog.c index 9fa8eb436..f7f1b3432 100644 --- a/src/hyperloglog.c +++ b/src/hyperloglog.c @@ -386,6 +386,7 @@ static char *invalid_hll_err = "-INVALIDOBJ Corrupted HLL object detected\r\n"; *(p) = (_l>>8) | HLL_SPARSE_XZERO_BIT; \ *((p)+1) = (_l&0xff); \ } while(0) +#define HLL_ALPHA_INF 0.721347520444481703680 /* constant for 0.5/ln(2) */ /* ========================= HyperLogLog algorithm ========================= */ @@ -1012,7 +1013,6 @@ uint64_t hllCount(struct hllhdr *hdr, int *invalid) { double m = HLL_REGISTERS; double E; int j; - static double alphaInf = 0.5 / log(2.); int regHisto[HLL_Q+2] = {0}; /* Compute register histogram */ @@ -1036,7 +1036,7 @@ uint64_t hllCount(struct hllhdr *hdr, int *invalid) { z *= 0.5; } z += m * hllSigma(regHisto[0]/(double)m); - E = llroundl(alphaInf*m*m/z); + E = llroundl(HLL_ALPHA_INF*m*m/z); return (uint64_t) E; } |