vmlselud - SELU activation (first derivative)

Math Vector Library Machine Learning Extension
Programming Reference Manual C/C++
Version 1.0 DD-00004-010

4.24 vmlselud - SELU activation (first derivative)

#include <mvecml.h>

void vmlselud (int n, double *y, int incy, double l, double a, const double *x, int incx);
void vmlseludf(int n, float *y, int incy, float l, float a, const float *x, int incx);

Given an input vector $x$ , a result vector $y$ and constants $λ$ and $α$ this function computes the first derivative of the SELU activation function of the values in the $x$ vector and stores the result in the $y$ vector.

{ . αex wherex <0 y =λ 1 wherex ≥0

4.24.1 Parameters

N - INTEGER: ENTRY: Number of elements of $x$ and $y$ .
CONSTRAINT: $n ≥1$ .
Y - ARRAY OF REAL: EXIT: Result vector $y$ .
CONSTRAINT: Must contain $n× incy$ elements.
CONSTRAINT: Must not overlap with array $x$ .
INCY - INTEGER: ENTRY: Stride for the vector $y$ .
CONSTRAINT: $incy> 0$ .
L - REAL: ENTRY: Constant $λ$ .
A - REAL: ENTRY: Constant $α$ .
X - ARRAY OF REAL: ENTRY: Input vector $x$ .
CONSTRAINT: Must contain $n× incx$ elements.
CONSTRAINT: Must not overlap with array $y$ .
INCX - INTEGER: ENTRY: Stride for the vector $x$ .
CONSTRAINT: $incx> 0$ .

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