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sumOfSquares(_:)

Returns the single-precision vector sum of squares.

Declaration

static func sumOfSquares<U>(_ vector: U) -> Float where U : AccelerateBuffer, U.Element == Float

Parameters

  • vector:

    The vector to sum.

Discussion

This function calculates and returns the sum of the squares of the elements of a supplied vector.

The following is an example of using sumOfSquares(_:):

let a: [Float] = [-1.5, 2.25, 3.6,
                  0.2, -0.1, -4.3]

let sumOfSquares = vDSP.sumOfSquares(a)

// Prints "sum of squares 38.8125"
print(String(format: "sum of squares %.4f", sumOfSquares))

See Also

Type Methods