vDSP_vsub

Declaration

extern void vDSP_vsub(const float *__B, vDSP_Stride __IB, const float *__A, vDSP_Stride __IA, float *__C, vDSP_Stride __IC, vDSP_Length __N);

Parameters

• __B:

  The first input vector, B.

• __IB:

  The distance between the elements in the first input vector.

• __A:

  The second input vector, A.

• __IA:

  The distance between the elements in the second input vector.

• __C:

  The output vector, C.

• __IC:

  The distance between the elements in the output vector.

• __N:

  The number of elements that the function processes.

Mentioned in

• Using vDSP for vector-based arithmetic

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, as follows:

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

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The following code shows an example of using this function:

See Also

Binary subtraction operations

• vDSP_vsubD