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# stats_rand_gen_gamma

(PECL)

stats_rand_gen_gamma -- Generates random deviates from a gamma distribution

## 说明

float stats_rand_gen_gamma ( float a, float r )

Generates random deviates from the gamma distribution whose density is (A**R)/Gamma(R) * X**(R-1) * Exp(-A*X).

## 参数

`a`

  location parameter of Gamma distribution (`a` > 0).

`r`

  shape parameter of Gamma distribution (`r` > 0).

## 返回值

What the function returns, first on success, then on failure. See also the &return.success; entity

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