Scalar nonlinear functions

Functions
float	_sqrtf (float a)
	Square Root.
float	inv (float a)
	Inverse.
int	inv (int a, int sft1, int sft2)
	Inverse.
float	invsqrt (float a)
	Inverse Square Root.
int	invsqrt (int a, int sft1, int sft2)
	Inverse Square Root.
int	sqrt (int a, int sft1, int sft2)
	Square Root.

Detailed Description

Function Documentation

_sqrtf()

float _sqrtf

(

float

a

)

Square Root.

Parameters

a	Single precision floating-point input value

Returns

Single precision floating-point result

inv() [1/2]

float inv

(

float

a

)

Inverse.

Parameters

a	Single precision floating-point input value

Returns

Single precision floating point inverse

inv() [2/2]

int inv	(	int	a,
		int	sft1,
		int	sft2 )

Inverse.

Equivalent to float2fix(inv(fix2float(a,sft1)),sft2).

Parameters

a	Fixed-point input value
sft1	Decimal point of input value
sft2	Decimal point of output value

Returns

Fixed-point result

invsqrt() [1/2]

float invsqrt

(

float

a

)

Inverse Square Root.

Parameters

a	Single precision floating-point input value

Returns

Single precision floating point inverse square root

invsqrt() [2/2]

int invsqrt	(	int	a,
		int	sft1,
		int	sft2 )

Inverse Square Root.

Equivalent to float2fix(invsqrt(fix2float(a,sft1)),sft2).

Parameters

a	Fixed-point input value
sft1	Decimal point of input value
sft2	Decimal point of output value

Returns

Fixed-point result

sqrt()

int sqrt	(	int	a,
		int	sft1,
		int	sft2 )

Square Root.

Equivalent to float2fix(sqrt(fix2float(a,sft1)),sft2).

Parameters

a	Fixed-point input value
sft1	Decimal point of input value
sft2	Decimal point of output value

Returns

Fixed-point result