trader_cos
(PECL trader >= 0.2.0)
trader_cos — Vector Trigonometric Cos
说明
trader_cos (
array
$real
) :
array
Calculates the cosine for each value in real
and returns the resulting array.
参数
-
real
-
浮点数数组。
返回值
Returns an array with calculated data or false on failure.