Convert 32-bit Integer valueSupport Functions

Functions

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.
 
void arm_q31_to_q15 (q31_t *pSrc, q15_t *pDst, uint32_t blockSize)
 Converts the elements of the Q31 vector to Q15 vector.
 
void arm_q31_to_q7 (q31_t *pSrc, q7_t *pDst, uint32_t blockSize)
 Converts the elements of the Q31 vector to Q7 vector.
 

Description

Function Documentation

void arm_q31_to_float ( q31_t pSrc,
float32_t pDst,
uint32_t  blockSize 
)
Parameters
[in]*pSrcpoints to the Q31 input vector
[out]*pDstpoints to the floating-point output vector
[in]blockSizelength 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.

References blockSize.

Referenced by main().

void arm_q31_to_q15 ( q31_t pSrc,
q15_t pDst,
uint32_t  blockSize 
)
Parameters
[in]*pSrcpoints to the Q31 input vector
[out]*pDstpoints to the Q15 output vector
[in]blockSizelength of the input vector
Returns
none.
Description:

The equation used for the conversion process is:

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

References __PKHTB, __SIMD32, and blockSize.

void arm_q31_to_q7 ( q31_t pSrc,
q7_t pDst,
uint32_t  blockSize 
)
Parameters
[in]*pSrcpoints to the Q31 input vector
[out]*pDstpoints to the Q7 output vector
[in]blockSizelength of the input vector
Returns
none.
Description:

The equation used for the conversion process is:

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

References __PACKq7, __SIMD32, and blockSize.