Convert 32-bit Integer value [Support Functions]

Functions
void	arm_q31_to_float (q31_t *pSrc, float32_t *pDst, uint32_t blockSize)
void	arm_q31_to_q15 (q31_t *pSrc, q15_t *pDst, uint32_t blockSize)
void	arm_q31_to_q7 (q31_t *pSrc, q7_t *pDst, uint32_t blockSize)

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Function Documentation

void arm_q31_to_float	(	q31_t *	pSrc,
		float32_t *	pDst,
		uint32_t	blockSize
	)

Converts the elements of the Q31 vector to floating-point vector.

Parameters:

[in]	*pSrc	points to the Q31 input vector
[out]	*pDst	points to the floating-point output vector
[in]	blockSize	length of the input vector

Returns:

none.

Description:

The equation used for the conversion process is:

      
 	pDst[n] = (float32_t) pSrc[n] / 2147483648;   0 <= n < blockSize.      
 

Examples:

arm_graphic_equalizer_example_q31.c.

Definition at line 57 of file arm_q31_to_float.c.

void arm_q31_to_q15	(	q31_t *	pSrc,
		q15_t *	pDst,
		uint32_t	blockSize
	)

Converts the elements of the Q31 vector to Q15 vector.

Parameters:

[in]	*pSrc	points to the Q31 input vector
[out]	*pDst	points to the Q15 output vector
[in]	blockSize	length of the input vector

Returns:

none.

Conditions for optimum performance

Input and output buffers should be aligned by 32-bit

Conditions for optimum performance

Input and output buffers should be aligned by 32-bit

Description:

The equation used for the conversion process is:

      
 	pDst[n] = (q15_t) pSrc[n] >> 16;   0 <= n < blockSize.      
 

Definition at line 61 of file arm_q31_to_q15.c.

void arm_q31_to_q7	(	q31_t *	pSrc,
		q7_t *	pDst,
		uint32_t	blockSize
	)

Converts the elements of the Q31 vector to Q7 vector.

Parameters:

[in]	*pSrc	points to the Q31 input vector
[out]	*pDst	points to the Q7 output vector
[in]	blockSize	length of the input vector

Returns:

none.

Conditions for optimum performance

Input and output buffers should be aligned by 32-bit

Description:

The equation used for the conversion process is:

      
 	pDst[n] = (q7_t) pSrc[n] >> 24;   0 <= n < blockSize.       
 

Definition at line 57 of file arm_q31_to_q7.c.