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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