stats_rand_gen_beta
(PECL)
stats_rand_gen_beta -- Generates beta random deviate
説明
float
stats_rand_gen_beta ( float a, float b )
Returns a random deviate from the beta distribution with parameters A and
B. The density of the beta is x^(a-1) * (1-x)^(b-1) / B(a,b) for 0 < x
<. Method R. C. H. Cheng.
パラメータ
- a
Its description
- b
Its description
返り値
What the function returns, first on success, then on failure. See
also the &return.success; entity