vmlselu - SELU activation

4.27 vmlselu - SELU activation

subroutine vmlselu (n, y, incy, l, a, x, incx); 
subroutine vmlseluf(n, y, incy, l, a, x, incx); 
 
subroutine vmlselu_64 (n, y, incy, l, a, x, incx); 
subroutine vmlseluf_64(n, y, incy, l, a, x, incx);

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

. {α(ex-1) wherex <0 y= λ x wherex ≥0

4.27.1 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: $incy̸= 0$ .
BEHAVIOR: A negative stride will traverse the array in reverse.
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: $incx̸= 0$ .
BEHAVIOR: A negative stride will traverse the array in reverse.

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