vDSP_vclip

Declaration

void vDSP_vclip(const float *__A, vDSP_Stride __IA, const float *__B, const float *__C, float *__D, vDSP_Stride __ID, vDSP_Length __N);

Parameters

• __A:

  Single-precision real input vector

• __IA:

  Stride for A

• __B:

  Pointer to single-precision real input scalar: low clipping threshold

• __C:

  Pointer to single-precision real input scalar: high clipping threshold

• __D:

  Single-precision real output vector

• __ID:

  Stride for D

• __N:

  The number of elements to process.

Discussion

This performs the following operation:

for (n = 0; n < N; ++n) {
    if (A[n*IA] < *B)
        D[n*ID] = *B;
    else if (A[n*IA] > *C)
        D[n*ID] = *C;
    else
        D[n*ID] = A[n*IA];
}

Elements of A are copied to D, while clipping elements that are outside the interval [*B, *C] to the endpoints of the interval.