Convert 16-bit fixed point value

Functions
void	arm_q15_to_f16 (const q15_t *pSrc, float16_t *pDst, uint32_t blockSize)
	Converts the elements of the Q15 vector to f16 vector.
void	arm_q15_to_f64 (const q15_t *pSrc, float64_t *pDst, uint32_t blockSize)
	Converts the elements of the Q15 vector to 64 bit floating-point vector.
void	arm_q15_to_float (const q15_t *pSrc, float32_t *pDst, uint32_t blockSize)
	Converts the elements of the Q15 vector to floating-point vector.
void	arm_q15_to_q31 (const q15_t *pSrc, q31_t *pDst, uint32_t blockSize)
	Converts the elements of the Q15 vector to Q31 vector.
void	arm_q15_to_q7 (const q15_t *pSrc, q7_t *pDst, uint32_t blockSize)
	Converts the elements of the Q15 vector to Q7 vector.

Description

Function Documentation

arm_q15_to_f16()

void arm_q15_to_f16	(	const q15_t *	pSrc,
		float16_t *	pDst,
		uint32_t	blockSize
	)

Converts the elements of the Q15 vector to f16 vector.

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

Parameters

[in]	pSrc	points to the Q15 input vector
[out]	pDst	points to the f16 output vector
[in]	blockSize	number of samples in each vector

Details

The equation used for the conversion process is:

    pDst[n] = (float16_t) pSrc[n] / 32768;   0 <= n < blockSize.

arm_q15_to_f64()

void arm_q15_to_f64	(	const q15_t *	pSrc,
		float64_t *	pDst,
		uint32_t	blockSize
	)

Converts the elements of the Q15 vector to 64 bit floating-point vector.

Parameters

[in]	pSrc	points to the Q15 input vector
[out]	pDst	points to the 64 bit floating-point output vector
[in]	blockSize	number of samples in each vector

Details

The equation used for the conversion process is:

    pDst[n] = (float64_t) pSrc[n] / 32768;   0 <= n < blockSize.

arm_q15_to_float()

void arm_q15_to_float	(	const q15_t *	pSrc,
		float32_t *	pDst,
		uint32_t	blockSize
	)

Converts the elements of the Q15 vector to floating-point vector.

Parameters

[in]	pSrc	points to the Q15 input vector
[out]	pDst	points to the floating-point output vector
[in]	blockSize	number of samples in each vector

Details

The equation used for the conversion process is:

    pDst[n] = (float32_t) pSrc[n] / 32768;   0 <= n < blockSize.

arm_q15_to_q31()

void arm_q15_to_q31	(	const q15_t *	pSrc,
		q31_t *	pDst,
		uint32_t	blockSize
	)

Converts the elements of the Q15 vector to Q31 vector.

Parameters

[in]	pSrc	points to the Q15 input vector
[out]	pDst	points to the Q31 output vector
[in]	blockSize	number of samples in each vector

Details

The equation used for the conversion process is:

    pDst[n] = (q31_t) pSrc[n] << 16;   0 <= n < blockSize.

arm_q15_to_q7()

void arm_q15_to_q7	(	const q15_t *	pSrc,
		q7_t *	pDst,
		uint32_t	blockSize
	)

Converts the elements of the Q15 vector to Q7 vector.

Parameters

[in]	pSrc	points to the Q15 input vector
[out]	pDst	points to the Q7 output vector
[in]	blockSize	number of samples in each vector

Details

The equation used for the conversion process is:

    pDst[n] = (q7_t) pSrc[n] >> 8;   0 <= n < blockSize.