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PHP5中文手册
stats_rand_gen_noncentral_f(PECL stats:1.0.0-1.0.2) stats_rand_gen_noncentral_f — Generates 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
本函数暂无文档,仅有参数列表。 参数
返回值
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