Convert 64-bit floating point value

RISCV_DSP_ATTRIBUTE void riscv_f64_to_f16 (const float64_t *pSrc, float16_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_f64_to_float (const float64_t *pSrc, float32_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_f64_to_q15 (const float64_t *pSrc, q15_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_f64_to_q31 (const float64_t *pSrc, q31_t *pDst, uint32_t blockSize)
RISCV_DSP_ATTRIBUTE void riscv_f64_to_q7 (const float64_t *pSrc, q7_t *pDst, uint32_t blockSize)
group f64_to_x

Functions

RISCV_DSP_ATTRIBUTE void riscv_f64_to_f16 (const float64_t *pSrc, float16_t *pDst, uint32_t blockSize)

Converts the elements of the f64 vector to f16 vector.

Converts the elements of the 64 bit floating-point vector to 16 bit floating-point vector.

Parameters

  • pSrc – [in] points to the f64 input vector

  • pDst – [out] points to the f16 output vector

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

RISCV_DSP_ATTRIBUTE void riscv_f64_to_float (const float64_t *pSrc, float32_t *pDst, uint32_t blockSize)

Converts the elements of the f64 vector to f32 vector.

Converts the elements of the 64 bit floating-point vector to floating-point vector.

Parameters

  • pSrc – [in] points to the f64 input vector

  • pDst – [out] points to the f32 output vector

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

RISCV_DSP_ATTRIBUTE void riscv_f64_to_q15 (const float64_t *pSrc, q15_t *pDst, uint32_t blockSize)

Converts the elements of the 64 bit floating-point vector to Q15 vector.

Details

The equation used for the conversion process is:

Scaling and Overflow Behavior

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

Note

In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options.

Parameters

  • pSrc – [in] points to the 64 bit floating-point input vector

  • pDst – [out] points to the Q15 output vector

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

RISCV_DSP_ATTRIBUTE void riscv_f64_to_q31 (const float64_t *pSrc, q31_t *pDst, uint32_t blockSize)

Converts the elements of the 64 bit floating-point vector to Q31 vector.

Details

The equation used for the conversion process is:

Scaling and Overflow Behavior

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

Note

In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options.

Parameters

  • pSrc – [in] points to the 64 bit floating-point input vector

  • pDst – [out] points to the Q31 output vector

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

RISCV_DSP_ATTRIBUTE void riscv_f64_to_q7 (const float64_t *pSrc, q7_t *pDst, uint32_t blockSize)

Converts the elements of the 64 bit floating-point vector to Q7 vector.

Description:

The equation used for the conversion process is:

Scaling and Overflow Behavior:

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

Note

In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options.

Parameters

  • *pSrc – [in] points to the 64 bit floating-point input vector

  • *pDst – [out] points to the Q7 output vector

  • blockSize – [in] length of the input vector