sign
fun sign(arr:Matrix<Double>):Matrix<Double>
Calculates a matrix consisting of the sign of each element in the input matrix. Returns -1 for positive values, -1 for negative values, 0 for 0.
Parameters
arr - An arbitrarily sized matrix
Return A matrix consisting of the operation performed element-wise.
fun sign(arr:Double):Double
fun sign(arr:Int):Double
A convenience function performing the sign operation via the kotlin.math equivalent call.