PHP 7.1.5 Released

stats_rand_gen_noncentral_f

(PECL stats >= 1.0.0)

stats_rand_gen_noncentral_fGenerates a random deviate from the noncentral F (variance ratio) distribution with "dfn" degrees of freedom in the numerator, and "dfd" degrees of freedom in the denominator, and noncentrality parameter "xnonc". Method : directly generates ratio of noncentral numerator chisquare variate to central denominator chisquare variate.

说明

float stats_rand_gen_noncentral_f ( float $dfn , float $dfd , float $xnonc )
Warning

本函数还未编写文档,仅有参数列表。

参数

dfn

dfd

xnonc

返回值

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