CMSIS-DSP  
CMSIS DSP Software Library
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
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. More...
 
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. More...
 
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. More...
 
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. More...
 

Description

Function Documentation

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

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

Parameters
[in]pSrcpoints to the Q15 input vector
[out]pDstpoints to the f16 output vector
[in]blockSizenumber of samples in each vector
Returns
none
Details
The equation used for the conversion process is:
    pDst[n] = (float16_t) pSrc[n] / 32768;   0 <= n < blockSize.
void arm_q15_to_float ( const q15_t pSrc,
float32_t pDst,
uint32_t  blockSize 
)
Parameters
[in]pSrcpoints to the Q15 input vector
[out]pDstpoints to the floating-point output vector
[in]blockSizenumber of samples in each vector
Returns
none
Details
The equation used for the conversion process is:
    pDst[n] = (float32_t) pSrc[n] / 32768;   0 <= n < blockSize.
void arm_q15_to_q31 ( const q15_t pSrc,
q31_t pDst,
uint32_t  blockSize 
)
Parameters
[in]pSrcpoints to the Q15 input vector
[out]pDstpoints to the Q31 output vector
[in]blockSizenumber of samples in each vector
Returns
none
Details
The equation used for the conversion process is:
    pDst[n] = (q31_t) pSrc[n] << 16;   0 <= n < blockSize.
void arm_q15_to_q7 ( const q15_t pSrc,
q7_t pDst,
uint32_t  blockSize 
)
Parameters
[in]pSrcpoints to the Q15 input vector
[out]pDstpoints to the Q7 output vector
[in]blockSizenumber of samples in each vector
Returns
none
Details
The equation used for the conversion process is:
    pDst[n] = (q7_t) pSrc[n] >> 8;   0 <= n < blockSize.