vDSP_vfill

Declaration

void vDSP_vfill(const float *__A, float *__C, vDSP_Stride __IC, vDSP_Length __N);

Parameters

• __A:

  Pointer to single-precision real input scalar.

• __C:

  Single-precision real output vector.

• __IC:

  Address stride for C.

• __N:

  The number of elements to process.

Discussion

The functions in this group populate a vector with a specified scalar value.

The following code shows how to clear the array c, setting the value of each element to pi:

let n = vDSP_Length(10)
let stride = vDSP_Stride(1)

var a = Float.pi

var c = [Float](repeating: .nan,
                count: Int(n))

vDSP_vfill(&a,
           &c,
           stride,
           n)

// Prints "[3.1415925, 3.1415925, 3.1415925,
//          3.1415925, 3.1415925, 3.1415925,
//          3.1415925, 3.1415925, 3.1415925,
//          3.1415925]"
print(c)