Nndata_convert
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void riscv_q7_to_q15_reordered_with_offset(const q7_t *src, q15_t *dst, uint32_t block_size, q15_t offset)
- group Nndata_convert
Functions
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void riscv_q7_to_q15_no_shift(const q7_t *pSrc, q15_t *pDst, uint32_t blockSize)
Converts the elements of the Q7 vector to Q15 vector without left-shift.
Converts the elements of the q7 vector to q15 vector without left-shift.
The equation used for the conversion process is:
- Description:
pDst[n] = (q15_t) pSrc[n]; 0 <= n < blockSize.
- Parameters:
*pSrc – [in] points to the Q7 input vector
*pDst – [out] points to the Q15 output vector
blockSize – [in] length of the input vector
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void riscv_q7_to_q15_reordered_no_shift(const q7_t *pSrc, q15_t *pDst, uint32_t blockSize)
Converts the elements of the Q7 vector to reordered Q15 vector without left-shift.
Converts the elements of the s8 vector to reordered q15 vector without left-shift.
This function does the q7 to q15 expansion with re-ordering
| A1 | A2 | A3 | A4 | 0 7 8 15 16 23 24 31
is converted into:
| A1 | A3 | and | A2 | A4 | 0 15 16 31 0 15 16 31
This looks strange but is natural considering how sign-extension is done at assembly level.
The expansion of other other oprand will follow the same rule so that the end results are the same.
The tail (i.e., last (N % 4) elements) will still be in original order.
- Parameters:
*pSrc – [in] points to the Q7 input vector
*pDst – [out] points to the Q15 output vector
blockSize – [in] length of the input vector
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void riscv_q7_to_q15_reordered_with_offset(const q7_t *src, q15_t *dst, uint32_t block_size, q15_t offset)
Converts the elements of the Q7 vector to a reordered Q15 vector with an added offset.
Converts the elements from a s8 vector to a s16 vector with an added offset.
Note
Refer header file for details.
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void riscv_q7_to_q7_no_shift(const q7_t *pSrc, q7_t *pDst, uint32_t blockSize)
Converts the elements of the Q7 vector to Q7 vector without left-shift.
The equation used for the conversion process is:
- Description:
pDst[n] = (q15_t) pSrc[n]; 0 <= n < blockSize.
- Parameters:
*pSrc – [in] points to the Q7 input vector
*pDst – [out] points to the Q7 output vector
blockSize – [in] length of the input vector
- Returns:
none.
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void riscv_q7_to_q7_reordered_no_shift(const q7_t *pSrc, q7_t *pDst, uint32_t blockSize)
Converts the elements of the Q7 vector to reordered Q7 vector without left-shift.
This function does the q7 to q7 expansion with re-ordering
| A1 | A2 | A3 | A4 | 0 7 8 15 16 23 24 31
is converted into:
| A1 | A3 | and | A2 | A4 | 0 15 16 31 0 15 16 31
This looks strange but is natural considering how sign-extension is done at assembly level.
The expansion of other other oprand will follow the same rule so that the end results are the same.
The tail (i.e., last (N % 4) elements) will still be in original order.
- Parameters:
*pSrc – [in] points to the Q7 input vector
*pDst – [out] points to the Q7 output vector
blockSize – [in] length of the input vector
- Returns:
none.
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void riscv_q7_to_q15_no_shift(const q7_t *pSrc, q15_t *pDst, uint32_t blockSize)