Contents

add(multiplication:_:)

Returns the double-precision element-wise addition of the product of a vector and a scalar value, and a vector.

Declaration

static func add<U>(multiplication: (a: U, b: Double), _ scalar: Double) -> [Double] where U : AccelerateBuffer, U.Element == Double

Parameters

  • multiplication:

    A tuple that contains the vector A and the scalar value B in D = (A * B) + C.

  • scalar:

    The input scalar value C in D = (A * B) + C.

Return Value

The output vector D in D = (A * B) + C.

Discussion

This function calculates the element-wise product of vector A and scalar value B, adds scalar value C to the product, and writes the result to vector D.

 for (n = 0; n < N; ++n)
    D[n] = A[n] * B + C[n];

[Image]

The following code shows an example of using this function:

    let a: [Double] = [ 1,  2,  3,  4,  5]
    let b: Double = 10
    let c: Double = 5
    
    let d = vDSP.add(multiplication: (a, b),
                     c)
    
    // Prints "[15.0, 25.0, 35.0, 45.0, 55.0]".
    print(d)

See Also

Addition