Function

vDSP_vnabs(_:_:_:_:_:)

Calculates the negative absolute value of each element in the supplied single-precision vector using specified stride.

Declaration

func vDSP_vnabs(_ __A: UnsafePointer<Float>, _ __IA: vDSP_Stride, _ __C: UnsafeMutablePointer<Float>, _ __IC: vDSP_Stride, _ __N: vDSP_Length)

Parameters

_A

Single-precision real input vector.

_I

Address stride for _A.

_C

Single-precision real output vector.

_K

Address stride for _C.

_N

The number of elements to process.

Discussion

This performs the following operation:

mathematical formula

Each value in __vDSP_C is the negated absolute value of the corresponding element in __vDSP_A.

See Also

Single-Vector Absolute Value

static func absolute<U>(U) -> [Double]

Returns the absolute value of each element in the supplied double-precision vector.

static func absolute<U>(U) -> [Float]

Returns the absolute value of each element in the supplied single-precision vector.

static func absolute<V>(DSPSplitComplex, result: inout V)

Calculates the absolute value of each element in the supplied single-precision complex vector.

static func absolute<V>(DSPDoubleSplitComplex, result: inout V)

Calculates the absolute value of each element in the supplied double-precision complex vector.

static func absolute<U, V>(U, result: inout V)

Calculates the absolute value of each element in the supplied double-precision vector.

static func absolute<U, V>(U, result: inout V)

Calculates the absolute value of each element in the supplied single-precision vector.

func vDSP_vabs(UnsafePointer<Float>, vDSP_Stride, UnsafeMutablePointer<Float>, vDSP_Stride, vDSP_Length)

Calculates the absolute value of each element in the supplied single-precision vector using specified stride.

func vDSP_vabsD(UnsafePointer<Double>, vDSP_Stride, UnsafeMutablePointer<Double>, vDSP_Stride, vDSP_Length)

Calculates the absolute value of each element in the supplied double-precision vector using specified stride.

func vDSP_vabsi(UnsafePointer<Int32>, vDSP_Stride, UnsafeMutablePointer<Int32>, vDSP_Stride, vDSP_Length)

Calculates the absolute value of each element in the supplied integer vector using specified stride.

func vDSP_vnabsD(UnsafePointer<Double>, vDSP_Stride, UnsafeMutablePointer<Double>, vDSP_Stride, vDSP_Length)

Calculates the negative absolute value of each element in the supplied double-precision vector using specified stride.