stats_rand_gen_gamma

(PECL stats:1.0.0-1.0.2)

stats_rand_gen_gamma — Generates random deviates from a gamma distribution

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).


	PHP5中文手册 stats_rand_gen_funiform stats_rand_gen_ibinomial_negative Statistics PHP Manual stats_rand_gen_gamma (PECL stats:1.0.0-1.0.2) 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(-AX). 参数 `a`* location parameter of Gamma distribution (`a` > 0). `r` shape parameter of Gamma distribution (`r` > 0). 返回值 stats_rand_gen_funiform stats_rand_gen_ibinomial_negative Statistics PHP Manual