conversion releted

convert digit to string
enum	ePOW { SHEX, SBINARY, SDECIMAL }
	Specific hex,binary or decimal. More...
U8	RBS_Number2String (U32 value, ePOW ePow, U8 length, char *pText)
	Convert unsigned digit to ASCII string. More...

trigonometric releted
int	RBS_sin (int angle)
	Calculate sine. More...
int	RBS_cos (int angle)
	Calculate cosine. More...
int	RBS_tan (int angle)
	Calculate tangent. More...
int	RBS_ctan (int angle)
	Calculate cotangent. More...
#define	ANG_45DEG   1024
#define	ANG_90DEG   (2*ANG_45DEG)
#define	ANG_135DEG   (3*ANG_45DEG)
#define	ANG_180DEG   (4*ANG_45DEG)
#define	ANG_225DEG   (5*ANG_45DEG)
#define	ANG_270DEG   (6*ANG_45DEG)
#define	ANG_315DEG   (7*ANG_45DEG)
#define	ANG_360DEG   (8*ANG_45DEG)

Detailed Description

Enumeration Type Documentation

enum ePOW

Enumerator
SHEX	hex
SBINARY	binary
SDECIMAL	decimal

Function Documentation

int RBS_cos

(

int

angle

)

This function calculates cosine without using float-point numbers.It use a constant table to look up for the appropriate value.

Parameters

[in]

angle

angle=degrees*ANG_45DEG/45,degrees=angle*45/ANG_45DEG.

Returns

cos(degrees)*1024.

int RBS_ctan

(

int

angle

)

This function calculates cotangent without using float-point numbers.It use a constant table to look up for the appropriate value.

Parameters

[in]

angle

angle=degrees*ANG_45DEG/45,degrees=angle*45/ANG_45DEG.

Returns

cotan(degrees)*1024.

U8 RBS_Number2String	(	U32	value,
		ePOW	ePow,
		U8	length,
		char *	pText
	)

Parameters

[in]	value	unsigned digit.
[in]	ePow	choose hex,binary or decimal.
[in]	length	Max.bits from lowest bit.If Len is 0,choosing Min.characters automatically.
[out]	pText	output string buffer.

Returns

character number.

See also

ePOW

int RBS_sin

(

int

angle

)

This function calculates sine without using float-point numbers. It use a constant table to look up for the approximate value.

Parameters

[in]

angle

angle=degrees*ANG_45DEG/45,degrees=angle*45/ANG_45DEG.

Returns

sin(degrees)*1024.

Example:

//calculate sine of 30 degrees,the return value is 511 which
//is approximately equal to sin30*1024 which is 512.
int value = RBS_sin(30*ANG_45DEG/45);

int RBS_tan

(

int

angle

)

This function calculates tangent without using float-point numbers.It use a constant table to look up for the appropriate value.

Parameters

[in]

angle

angle=degrees*ANG_45DEG/45,degrees=angle*45/ANG_45DEG.

Returns

tan(degrees)*1024.