Fixed point division

RISCV_DSP_ATTRIBUTE riscv_status riscv_divide_q15 (q15_t numerator, q15_t denominator, q15_t *quotient, int16_t *shift)
RISCV_DSP_ATTRIBUTE riscv_status riscv_divide_q31 (q31_t numerator, q31_t denominator, q31_t *quotient, int16_t *shift)
group divide

Functions

RISCV_DSP_ATTRIBUTE riscv_status riscv_divide_q15 (q15_t numerator, q15_t denominator, q15_t *quotient, int16_t *shift)

Fixed point division.

When dividing by 0, an error RISCV_MATH_NANINF is returned. And the quotient is forced to the saturated negative or positive value.

Parameters

  • numerator – [in] Numerator

  • denominator – [in] Denominator

  • quotient – [out] Quotient value normalized between -1.0 and 1.0

  • shift – [out] Shift left value to get the unnormalized quotient

Returns

error status

RISCV_DSP_ATTRIBUTE riscv_status riscv_divide_q31 (q31_t numerator, q31_t denominator, q31_t *quotient, int16_t *shift)

Fixed point division.

When dividing by 0, an error RISCV_MATH_NANINF is returned. And the quotient is forced to the saturated negative or positive value.

Parameters

  • numerator – [in] Numerator

  • denominator – [in] Denominator

  • quotient – [out] Quotient value normalized between -1.0 and 1.0

  • shift – [out] Shift left value to get the unnormalized quotient

Returns

error status