Vector Multiplication

RISCV_DSP_ATTRIBUTE void riscv_mult_f16 (const float16_t *pSrcA, const float16_t *pSrcB, float16_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_mult_f32 (const float32_t *pSrcA, const float32_t *pSrcB, float32_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_mult_f64 (const float64_t *pSrcA, const float64_t *pSrcB, float64_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_mult_q15 (const q15_t *pSrcA, const q15_t *pSrcB, q15_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_mult_q31 (const q31_t *pSrcA, const q31_t *pSrcB, q31_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_mult_q7 (const q7_t *pSrcA, const q7_t *pSrcB, q7_t *pDst, uint32_t blockSize)
group BasicMult

Element-by-element multiplication of two vectors.

There are separate functions for floating-point, Q7, Q15, and Q31 data types.

Functions

RISCV_DSP_ATTRIBUTE void riscv_mult_f16 (const float16_t *pSrcA, const float16_t *pSrcB, float16_t *pDst, uint32_t blockSize)

Floating-point vector multiplication.

Parameters

  • pSrcA – [in] points to the first input vector.

  • pSrcB – [in] points to the second input vector.

  • pDst – [out] points to the output vector.

  • blockSize – [in] number of samples in each vector.

RISCV_DSP_ATTRIBUTE void riscv_mult_f32 (const float32_t *pSrcA, const float32_t *pSrcB, float32_t *pDst, uint32_t blockSize)

Floating-point vector multiplication.

Parameters

  • pSrcA – [in] points to the first input vector.

  • pSrcB – [in] points to the second input vector.

  • pDst – [out] points to the output vector.

  • blockSize – [in] number of samples in each vector.

RISCV_DSP_ATTRIBUTE void riscv_mult_f64 (const float64_t *pSrcA, const float64_t *pSrcB, float64_t *pDst, uint32_t blockSize)

Floating-point vector multiplication.

Parameters

  • pSrcA – [in] points to the first input vector.

  • pSrcB – [in] points to the second input vector.

  • pDst – [out] points to the output vector.

  • blockSize – [in] number of samples in each vector.

RISCV_DSP_ATTRIBUTE void riscv_mult_q15 (const q15_t *pSrcA, const q15_t *pSrcB, q15_t *pDst, uint32_t blockSize)

Q15 vector multiplication.

Scaling and Overflow Behavior

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

Parameters

  • pSrcA – [in] points to first input vector

  • pSrcB – [in] points to second input vector

  • pDst – [out] points to output vector

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

RISCV_DSP_ATTRIBUTE void riscv_mult_q31 (const q31_t *pSrcA, const q31_t *pSrcB, q31_t *pDst, uint32_t blockSize)

Q31 vector multiplication.

Scaling and Overflow Behavior

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

Parameters

  • pSrcA – [in] points to the first input vector.

  • pSrcB – [in] points to the second input vector.

  • pDst – [out] points to the output vector.

  • blockSize – [in] number of samples in each vector.

RISCV_DSP_ATTRIBUTE void riscv_mult_q7 (const q7_t *pSrcA, const q7_t *pSrcB, q7_t *pDst, uint32_t blockSize)

Q7 vector multiplication.

Scaling and Overflow Behavior

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

Parameters

  • pSrcA – [in] points to the first input vector

  • pSrcB – [in] points to the second input vector

  • pDst – [out] points to the output vector

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