PHP - Manual: stats_rand_gen_gamma
2024-12-27
(PECL stats >= 1.0.0)
stats_rand_gen_gamma — Generates a random deviate from the gamma distribution
$a
, float $r
) : floatGenerates a random deviate from the gamma distribution whose density is (A**R)/Gamma(R) * X**(R-1) * Exp(-A*X).
a
location parameter of Gamma distribution (a
> 0).
r
shape parameter of Gamma distribution (r
>
0).
A random deviate
官方地址:https://www.php.net/manual/en/function.stats-rand-gen-gamma.php