Convert 32-bit floating point value

Collaboration diagram for Convert 32-bit floating point value:

Functions
void	tpt_f32_to_q15 (q15_t *aOutData, const f32_t *aInData, uint32_t aCount)
	Converts the elements of the floating-point vector to Q15 vector. More...
void	tpt_f32_to_q31 (q31_t *aOutData, const f32_t *aInData, uint32_t aCount)
	Converts the elements of the floating-point vector to Q31 vector. More...
void	tpt_f32_to_q7 (q7_t *aOutData, const f32_t *aInData, uint32_t aCount)
	Converts the elements of the floating-point vector to Q7 vector. More...
void	tpt_f64_to_q15 (q15_t *aOutData, const f64_t *aInData, uint32_t aCount)
	Converts the elements of the floating-point vector to Q15 vector. More...
void	tpt_f64_to_q31 (q31_t *aOutData, const f64_t *aInData, uint32_t aCount)
	Converts the elements of the floating-point vector to Q31 vector. More...
void	tpt_f64_to_q7 (q7_t *aOutData, const f64_t *aInData, uint32_t aCount)
	Converts the elements of the floating-point vector to Q7 vector. More...

Detailed Description

Function Documentation

tpt_f32_to_q15()

void tpt_f32_to_q15	(	q15_t *	aOutData,
		const f32_t *	aInData,
		uint32_t	aCount
	)

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

Parameters

[out]	aOutData	points to the Q15 output vector
[in]	aInData	points to the floating-point input vector
[in]	aCount	number of samples in each vector

Returns

none

Details

The equation used for the conversion process is:

   aOutData[n] = (q15_t)(aInData[n] * 32768);   0 <= n < aCount.
 

Scaling and Overflow Behavior

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

tpt_f32_to_q31()

void tpt_f32_to_q31	(	q31_t *	aOutData,
		const f32_t *	aInData,
		uint32_t	aCount
	)

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

Parameters

[out]	aOutData	points to the Q31 output vector
[in]	aInData	points to the floating-point input vector
[in]	aCount	number of samples in each vector

Returns

none

Details

The equation used for the conversion process is:

    aOutData[n] = (q31_t)(aInData[n] * 2147483648);   0 <= n < aCount.
  

Scaling and Overflow Behavior

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

tpt_f32_to_q7()

void tpt_f32_to_q7	(	q7_t *	aOutData,
		const f32_t *	aInData,
		uint32_t	aCount
	)

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

Parameters

[out]	aOutData	points to the Q7 output vector
[in]	aInData	points to the floating-point input vector
[in]	aCount	length of the input vector

Returns

none.

Description:

The equation used for the conversion process is:

    aOutData[n] = (q7_t)(aInData[n] * 128);   0 <= n < aCount.
  

Scaling and Overflow Behavior:

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

tpt_f64_to_q15()

void tpt_f64_to_q15	(	q15_t *	aOutData,
		const f64_t *	aInData,
		uint32_t	aCount
	)

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

Parameters

[out]	aOutData	points to the Q15 output vector
[in]	aInData	points to the floating-point input vector
[in]	aCount	number of samples in each vector

Returns

none

Details

The equation used for the conversion process is:

   aOutData[n] = (q15_t)(aInData[n] * 32768);   0 <= n < aCount.
 

Scaling and Overflow Behavior

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

tpt_f64_to_q31()

void tpt_f64_to_q31	(	q31_t *	aOutData,
		const f64_t *	aInData,
		uint32_t	aCount
	)

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

Parameters

[out]	aOutData	points to the Q31 output vector
[in]	aInData	points to the floating-point input vector
[in]	aCount	number of samples in each vector

Returns

none

Details

The equation used for the conversion process is:

    aOutData[n] = (q31_t)(aInData[n] * 2147483648);   0 <= n < aCount.
  

Scaling and Overflow Behavior

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

tpt_f64_to_q7()

void tpt_f64_to_q7	(	q7_t *	aOutData,
		const f64_t *	aInData,
		uint32_t	aCount
	)

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

Parameters

[out]	aOutData	points to the Q7 output vector
[in]	aInData	points to the floating-point input vector
[in]	aCount	length of the input vector

Returns

none.

Description:

The equation used for the conversion process is:

    aOutData[n] = (q7_t)(aInData[n] * 128);   0 <= n < aCount.
  

Scaling and Overflow Behavior:

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