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(PECL stats >= 1.0.0)
stats_rand_gen_gamma — Generates random deviates from a gamma distribution
$a
, float $r
)Generates random deviates 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).