Fxp_trig.c File Reference

Fixed-point trigenometry tables and routines. More...

#include <stdio.h>
#include <math.h>
#include "Fxp.h"

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Defines
#define	TABLE_SIZE   2048
	# of elements in trig tables
#define	TABLEPOS_TO_ANGLE(n)   ((Afxp)((AFXP_MAX*n)/TABLE_SIZE))
	Converts a table-index to an angle.
#define	ANGLE_TO_TABLEPOS(a)   (((TABLE_SIZE*(int)a)/AFXP_MAX)%TABLE_SIZE)
	Converts an angle to a table pos.
#define	AVERAGE(x, y)   ((x+y)/2)
	Returns average of two values.
Functions
int	FindInTable (Sfxp val, int min, int max, const Sfxp table[TABLE_SIZE])
	Binary search for specified area, sorted in increasing order.
int	FXP_DumpTrig (const char *fname)
	Prints contents of trig tables to a C file.
Variables
const Sfxp	__SIN_TABLE []
	Table of sin values vs angle.
const Sfxp	__COS_TABLE []
	Table of cos values vs angle.
const Sfxp	__TAN_TABLE []
	Table of tan values vs angle.

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Detailed Description

Definition in file Fxp_trig.c.

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