Functions | |
void | arm_var_f16 (const float16_t *pSrc, uint32_t blockSize, float16_t *pResult) |
Variance of the elements of a floating-point vector. | |
void | arm_var_f32 (const float32_t *pSrc, uint32_t blockSize, float32_t *pResult) |
Variance of the elements of a floating-point vector. | |
void | arm_var_f64 (const float64_t *pSrc, uint32_t blockSize, float64_t *pResult) |
Variance of the elements of a floating-point vector. | |
void | arm_var_q15 (const q15_t *pSrc, uint32_t blockSize, q15_t *pResult) |
Variance of the elements of a Q15 vector. | |
void | arm_var_q31 (const q31_t *pSrc, uint32_t blockSize, q31_t *pResult) |
Variance of the elements of a Q31 vector. | |
Calculates the variance of the elements in the input vector. The underlying algorithm used is the direct method sometimes referred to as the two-pass method:
Result = sum(element - meanOfElements)^2) / numElement - 1 meanOfElements = ( pSrc[0] * pSrc[0] + pSrc[1] * pSrc[1] + ... + pSrc[blockSize-1] ) / blockSize
There are separate functions for floating point, Q31, and Q15 data types.
void arm_var_f16 | ( | const float16_t * | pSrc, |
uint32_t | blockSize, | ||
float16_t * | pResult | ||
) |
Variance of the elements of a floating-point vector.
[in] | pSrc | points to the input vector |
[in] | blockSize | number of samples in input vector |
[out] | pResult | variance value returned here |
Variance of the elements of a floating-point vector.
[in] | pSrc | points to the input vector |
[in] | blockSize | number of samples in input vector |
[out] | pResult | variance value returned here |
Variance of the elements of a floating-point vector.
[in] | pSrc | points to the input vector |
[in] | blockSize | number of samples in input vector |
[out] | pResult | variance value returned here |
Variance of the elements of a Q15 vector.
[in] | pSrc | points to the input vector |
[in] | blockSize | number of samples in input vector |
[out] | pResult | variance value returned here |
Variance of the elements of a Q31 vector.
[in] | pSrc | points to the input vector |
[in] | blockSize | number of samples in input vector |
[out] | pResult | variance value returned here |