diff options
Diffstat (limited to 'src/backend/utils/misc/sampling.c')
| -rw-r--r-- | src/backend/utils/misc/sampling.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/backend/utils/misc/sampling.c b/src/backend/utils/misc/sampling.c index c36459ebadc..b618ed1d7e6 100644 --- a/src/backend/utils/misc/sampling.c +++ b/src/backend/utils/misc/sampling.c @@ -59,8 +59,8 @@ BlockSampler_HasMore(BlockSampler bs) BlockNumber BlockSampler_Next(BlockSampler bs) { - BlockNumber K = bs->N - bs->t; /* remaining blocks */ - int k = bs->n - bs->m; /* blocks still to sample */ + BlockNumber K = bs->N - bs->t; /* remaining blocks */ + int k = bs->n - bs->m; /* blocks still to sample */ double p; /* probability to skip block */ double V; /* random */ @@ -150,7 +150,7 @@ reservoir_get_next_S(ReservoirState rs, double t, int n) double V, quot; - V = sampler_random_fract(rs->randstate); /* Generate V */ + V = sampler_random_fract(rs->randstate); /* Generate V */ S = 0; t += 1; /* Note: "num" in Vitter's code is always equal to t - n */ @@ -211,7 +211,7 @@ reservoir_get_next_S(ReservoirState rs, double t, int n) y *= numer / denom; denom -= 1; } - W = exp(-log(sampler_random_fract(rs->randstate)) / n); /* Generate W in advance */ + W = exp(-log(sampler_random_fract(rs->randstate)) / n); /* Generate W in advance */ if (exp(log(y) / n) <= (t + X) / t) break; } |