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# Normalization functions

Compute the mean and standard deviation of a vector and calculate new elements to have a zero mean and a unit standard deviation.

## Topics

### Normalization Functions

  <doc://com.apple.accelerate/documentation/Accelerate/finding-the-sharpest-image-in-a-sequence-of-captured-images>

[`extern void vDSP_normalize(const float *__A, vDSP_Stride __IA, float *__C, vDSP_Stride __IC, float *__Mean, float *__StandardDeviation, vDSP_Length __N);`](/documentation/Accelerate/vDSP_normalize)

Computes single-precision mean and standard deviation, and then calculates new elements to have a zero mean and a unit standard deviation.

[`extern void vDSP_normalizeD(const double *__A, vDSP_Stride __IA, double *__C, vDSP_Stride __IC, double *__Mean, double *__StandardDeviation, vDSP_Length __N);`](/documentation/Accelerate/vDSP_normalizeD)

Computes double-precision mean and standard deviation, and then calculates new elements to have a zero mean and a unit standard deviation.


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