stats_rand_gen_gamma
(PECL stats >= 1.0.0)
stats_rand_gen_gamma — Generates a random deviate from the gamma distribution
説明
Generates a random deviate from the gamma distribution whose density is (A**R)/Gamma(R) * X**(R-1) * Exp(-A*X).
パラメータ
a-
location parameter of Gamma distribution (
a> 0). r-
shape parameter of Gamma distribution (
r> 0).
戻り値
A random deviate
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