Vector Offset

void riscv_offset_f32(const float32_t *pSrc, float32_t offset, float32_t *pDst, uint32_t blockSize)
void riscv_offset_q15(const q15_t *pSrc, q15_t offset, q15_t *pDst, uint32_t blockSize)
void riscv_offset_q31(const q31_t *pSrc, q31_t offset, q31_t *pDst, uint32_t blockSize)
void riscv_offset_q7(const q7_t *pSrc, q7_t offset, q7_t *pDst, uint32_t blockSize)
group BasicOffset

Adds a constant offset to each element of a vector.

The functions support in-place computation allowing the source and destination pointers to reference the same memory buffer. There are separate functions for floating-point, Q7, Q15, and Q31 data types.

Functions

void riscv_offset_f32(const float32_t *pSrc, float32_t offset, float32_t *pDst, uint32_t blockSize)

Adds a constant offset to a floating-point vector.

Return

none

Parameters
  • [in] pSrc: points to the input vector

  • [in] offset: is the offset to be added

  • [out] pDst: points to the output vector

  • [in] blockSize: number of samples in each vector

void riscv_offset_q15(const q15_t *pSrc, q15_t offset, q15_t *pDst, uint32_t blockSize)

Adds a constant offset to a Q15 vector.

Return

none

Scaling and Overflow Behavior

The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.

Parameters
  • [in] pSrc: points to the input vector

  • [in] offset: is the offset to be added

  • [out] pDst: points to the output vector

  • [in] blockSize: number of samples in each vector

void riscv_offset_q31(const q31_t *pSrc, q31_t offset, q31_t *pDst, uint32_t blockSize)

Adds a constant offset to a Q31 vector.

Return

none

Scaling and Overflow Behavior

The function uses saturating arithmetic. Results outside of the allowable Q31 range [0x80000000 0x7FFFFFFF] are saturated.

Parameters
  • [in] pSrc: points to the input vector

  • [in] offset: is the offset to be added

  • [out] pDst: points to the output vector

  • [in] blockSize: number of samples in each vector

void riscv_offset_q7(const q7_t *pSrc, q7_t offset, q7_t *pDst, uint32_t blockSize)

Adds a constant offset to a Q7 vector.

Return

none

Scaling and Overflow Behavior

The function uses saturating arithmetic. Results outside of the allowable Q7 range [0x80 0x7F] are saturated.

Parameters
  • [in] pSrc: points to the input vector

  • [in] offset: is the offset to be added

  • [out] pDst: points to the output vector

  • [in] blockSize: number of samples in each vector