Contents

subtract(_:_:)

Returns the single-precision element-wise subtraction of two vectors.

Declaration

static func subtract<T, U>(_ vectorA: U, _ vectorB: T) -> [Float] where T : AccelerateBuffer, U : AccelerateBuffer, T.Element == Float, U.Element == Float

Parameters

  • vectorA:

    The first input vector, A.

  • vectorB:

    The second input vector, B.

Mentioned in

Return Value

The output vector, C.

Discussion

This function calculates the differences of the first N elements of input vectors A and B, and writes the result to output vector C.

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

[Image]

The following code shows an example of using this function:

    let a: [Float] = [10, 20, 30, 40, 50]
    let b: [Float] = [ 1,  2,  3,  4,  5]

    let c = vDSP.subtract(a, b)
   
    // Prints "[9.0, 18.0, 27.0, 36.0, 45.0]".
    print(c)

See Also

Subtraction