stats_stat_innerproduct
(PECL stats >= 1.0.0)
stats_stat_innerproduct — Returns the inner product of two vectors
说明
stats_stat_innerproduct
( array
$arr1
, array $arr2
) : float
Returns the inner product of arr1 and arr2.
参数
-
arr1 -
The first array
-
arr2 -
The second array
返回值
Returns the inner product of arr1 and arr2,
or FALSE on failure.