Vector Negate

Collaboration diagram for Vector Negate:

Functions
void	tpt_negate_f32 (f32_t *__restrict aOutData, const f32_t *__restrict aInData, uint32_t aCount)
	Negates the elements of a floating-point vector.
void	tpt_negate_f64 (f64_t *__restrict aOutData, const f64_t *__restrict aInData, uint32_t aCount)
	Negates the elements of a floating-point vector.
void	tpt_negate_q15 (q15_t *__restrict aOutData, const q15_t *__restrict aInData, uint32_t aCount)
	Negates the elements of a Q15 vector.
void	tpt_negate_q31 (q31_t *__restrict aOutData, const q31_t *__restrict aInData, uint32_t aCount)
	Negates the elements of a Q31 vector.
void	tpt_negate_q7 (q7_t *__restrict aOutData, const q7_t *__restrict aInData, uint32_t aCount)
	Negates the elements of a Q7 vector.

Detailed Description

Negates the elements of a vector.

   aOutData[n] = -aInData[n],    0 <= n < aCount;
 

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.

Function Documentation

tpt_negate_f32()

void tpt_negate_f32	(	f32_t *__restrict	aOutData,
		const f32_t *__restrict	aInData,
		uint32_t	aCount )

Negates the elements of a floating-point vector.

Parameters

[out]	aOutData	points to the output vector
[in]	aInData	points to the input vector
[in]	aCount	number of samples in the vector

Returns

none

tpt_negate_f64()

void tpt_negate_f64	(	f64_t *__restrict	aOutData,
		const f64_t *__restrict	aInData,
		uint32_t	aCount )

Negates the elements of a floating-point vector.

Parameters

[out]	aOutData	points to the output vector
[in]	aInData	points to the input vector
[in]	aCount	number of samples in the vector

Returns

none

tpt_negate_q15()

void tpt_negate_q15	(	q15_t *__restrict	aOutData,
		const q15_t *__restrict	aInData,
		uint32_t	aCount )

Negates the elements of a Q15 vector.

Parameters

[out]	aOutData	points to the output vector
[in]	aInData	points to the input vector
[in]	aCount	number of samples in the vector

Returns

none

Scaling and Overflow Behavior

The function uses saturating arithmetic. The Q15 value -1 (0x8000) is saturated to the maximum allowable positive value 0x7FFF.

tpt_negate_q31()

void tpt_negate_q31	(	q31_t *__restrict	aOutData,
		const q31_t *__restrict	aInData,
		uint32_t	aCount )

Negates the elements of a Q31 vector.

Parameters

[out]	aOutData	points to the output vector
[in]	aInData	points to the input vector
[in]	aCount	number of samples in the vector

Returns

none

Scaling and Overflow Behavior

The function uses saturating arithmetic. The Q31 value -1 (0x80000000) is saturated to the maximum allowable positive value 0x7FFFFFFF.

tpt_negate_q7()

void tpt_negate_q7	(	q7_t *__restrict	aOutData,
		const q7_t *__restrict	aInData,
		uint32_t	aCount )

Negates the elements of a Q7 vector.

Parameters

[out]	aOutData	points to the output vector
[in]	aInData	points to the input vector
[in]	aCount	number of samples in the vector

Returns

none

Scaling and Overflow Behavior

The function uses saturating arithmetic. The Q7 value -1 (0x80) is saturated to the maximum allowable positive value 0x7F.