Function

vDSP_venvlp(_:_:_:_:_:_:_:_:_:)

Calculates whether each element in a single-precision vector falls within a specified range.

Declaration

func vDSP_venvlp(_ __A: UnsafePointer<Float>, _ __IA: vDSP_Stride, _ __B: UnsafePointer<Float>, _ __IB: vDSP_Stride, _ __C: UnsafePointer<Float>, _ __IC: vDSP_Stride, _ __D: UnsafeMutablePointer<Float>, _ __ID: vDSP_Stride, _ __N: vDSP_Length)

Parameters

__A

Single-precision real input vector: high envelope.

__IA

Stride for A.

__B

Single-precision real input vector: low envelope.

__IB

Stride for B.

__C

Single-precision real input vector.

__IC

Stride for C.

__D

Single-precision real output vector.

__ID

Stride for D.

__N

The number of elements to process.

Discussion

Finds the extrema of C. For the first N elements of C, the corresponding element of A provides an upper-threshold value, and the corresponding element of B provides a lower-threshold value. If the value of an element of C falls outside the range defined by these thresholds, it is copied to the corresponding element of D. If its value is within the range, the corresponding element of D is set to zero:

mathematical formula

See Also

Vector-to-Vector Extrema Finding