Eli Hughes / CMSIS_DSP_401

V4.0.1 of the ARM CMSIS DSP libraries. Note that arm_bitreversal2.s, arm_cfft_f32.c and arm_rfft_fast_f32.c had to be removed. arm_bitreversal2.s will not assemble with the online tools. So, the fast f32 FFT functions are not yet available. All the other FFT functions are available.

Dependents:   MPU9150_Example fir_f32 fir_f32 MPU9150_nucleo_noni2cdev ... more

Embed: (wiki syntax)

« Back to documentation index

Convert 32-bit Integer value
Functions

Convert 32-bit Integer value
[Support 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.

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.

end of Inverse park group

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.

Definition at line 74 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]*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.

Definition at line 70 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]*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.

Definition at line 70 of file arm_q31_to_q7.c.

Generated on Tue Jul 12 2022 19:48:46 by  doxygen 1.7.2