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stats_rand_gen_ibinomial_negative

(PECL stats >= 1.0.0)

stats_rand_gen_ibinomial_negative — Generates a random deviate from the negative binomial distribution

说明

stats_rand_gen_ibinomial_negative(int $n, float $p): int

Returns a random deviate from a negative binomial distribution where the number of success is n and the success rate is p.

参数

n

The number of success

p

The success rate

返回值

A random deviate, which is the number of failure.