vDSP_vintb

Declaration

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

Parameters

• __A:

  Single-precision real input vector.

• __IA:

  Stride for A.

• __B:

  Single-precision real input vector.

• __IB:

  Stride for B.

• __C:

  Single-precision real input scalar: interpolation constant.

• __D:

  Single-precision real output vector.

• __ID:

  Stride for D.

• __N:

  The number of elements to process.

Discussion

This function interpolates between the first N elements of A and B by taking the difference between corresponding elements, multiplying it by the constant C, and adding this to the corresponding element of A; results are left in corresponding elements of D:

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This example interpolates from a (all zeros) toward b [10, 20, 30, 40] using the interpolation constant 0.25, computing a + 0.25 · (b − a) elementwise. The result is one quarter of the way from a to b: [2.5, 5, 7.5, 10].

The following code shows an example of using this function:

See Also

Vector-to-Vector Linear Interpolation

• vDSP_vintbD