# stats_rand_gen_exponential

(PECL stats >= 1.0.0)

stats_rand_gen_exponential — Generates a random deviate from the exponential distribution

### 说明

stats_rand_gen_exponential(float `$av`): float

Returns a random deviate from the exponential distribution of which the scale is `av`.

### 参数

`av`

  The scale parameter

### 返回值

A random deviate

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