vDSP_vsadd

Declaration

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

Parameters

• __A:

  Single-precision real input vector.

• __IA:

  Stride for A.

• __B:

  Pointer to single-precision real input scalar.

• __C:

  Single-precision real output vector.

• __IC:

  Stride for C.

• __N:

  The number of elements to process.

Discussion

This function calculates the sums of the first N elements of A and the scalar value B, writing the result to C:

[Image]

The operation is:

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

The following code shows an example of using vDSP_vsadd:

let a: [Float] = [1, 2, 4, 5]
var b: Float = 2

let n = vDSP_Length(a.count)

var c = [Float](repeating: 0,
                count: a.count)

vDSP_vsadd(a, stride,
           &b,
           &c, stride,
           n)

// Prints "[3.0, 4.0, 6.0, 7.0]"
print(c)