APIs for MATHLIB

Introduction

This module contains FastRTS APIs for optimized trignometric and math functions.

Functions
float	FastRTS_cosf (const float theta)
	The Cosine Function. More...
float	FastRTS_sinf (const float theta)
	The Sine Function. More...
void	FastRTS_sincos (const float theta, float *retValues)
	The Sine/Cosine Function. More...
float	FastRTS_acosf (const float theta)
	The Arccosine Function. More...
float	FastRTS_asinf (const float theta)
	The Arcsine Function. More...
float	FastRTS_atanf (const float x)
	The Arctangent function. More...
float	FastRTS_atan2f (const float y, const float x)
	The Arctangent(y,x) function. More...
float	FastRTS_expf (const float x)
	The Exponent function. More...
float	FastRTS_logf (const float x)
	The Natural Logarithm function. More...
static RTS_TEXT_SECTION float	FastRTS_sqrtf (const float x)

Macros
#define	RTS_TEXT_SECTION   __attribute__((section(".trigText"))) __attribute__((always_inline))
#define	RTS_DATA_SECTION   __attribute__((aligned(8), section(".trigData")))

Macro Definition Documentation

RTS_TEXT_SECTION

#define RTS_TEXT_SECTION   __attribute__((section(".trigText"))) __attribute__((always_inline))

RTS_DATA_SECTION

#define RTS_DATA_SECTION   __attribute__((aligned(8), section(".trigData")))

Function Documentation

FastRTS_cosf()

float FastRTS_cosf

(

const float

theta

)

The Cosine Function.

Parameters

[in]

theta

- Angle in radians

Returns

The cosine of the angle

FastRTS_sinf()

float FastRTS_sinf

(

const float

theta

)

The Sine Function.

Parameters

[in]

theta

- Angle in radians

Returns

The sine of the angle

FastRTS_sincos()

void FastRTS_sincos	(	const float	theta,
		float *	retValues
	)

The Sine/Cosine Function.

Parameters

[in]	theta	- Angle in radians
[in]	retValues	- pointer that stores return sine and cosine values

FastRTS_acosf()

float FastRTS_acosf

(

const float

theta

)

The Arccosine Function.

Parameters

[in]

theta

- Angle in radians

Returns

The cosine of the angle

FastRTS_asinf()

float FastRTS_asinf

(

const float

theta

)

The Arcsine Function.

Parameters

[in]

theta

- Angle in radians

Returns

The sine of the angle

FastRTS_atanf()

float FastRTS_atanf

(

const float

x

)

The Arctangent function.

Parameters

[in]

x

the arc subtended by the angle theta

Returns

theta , the angle subtended by the arc of length x

FastRTS_atan2f()

float FastRTS_atan2f	(	const float	y,
		const float	x
	)

The Arctangent(y,x) function.

Parameters

[in]	y	- numerator of the ratio y/x which is the length of the arc subtended by the angle theta
[in]	x	- denominator of the ratio y/x which is the length of the arc subtended by the angle theta

Returns

theta , the angle subtended by the arc of length y/x

FastRTS_expf()

float FastRTS_expf

(

const float

x

)

The Exponent function.

Parameters

[in]

x

- argument whose exponent is to be calculated

Note

due to the allowable range of 32-bit float, the maximum exponent allowed is +/-88

Returns

e^x , the exponent of the argument

FastRTS_logf()

float FastRTS_logf

(

const float

x

)

The Natural Logarithm function.

Parameters

[in]

x

- argument whose logarithm is to be calculated

Returns

log(x) , the natural logarithm of the argument

FastRTS_sqrtf()

static RTS_TEXT_SECTION float FastRTS_sqrtf ( const float  x )

static