Fixed.cpp File Reference

#include "precompiled.h"
#include "Fixed.h"
#include "ps/CStr.h"
#include <sstream>

Include dependency graph for Fixed.cpp:

Functions
CFixed_15_16	atan2_approx (CFixed_15_16 y, CFixed_15_16 x)
	Inaccurate approximation of atan2 over fixed-point numbers. More...
void	sincos_approx (CFixed_15_16 a, CFixed_15_16 &sin_out, CFixed_15_16 &cos_out)
	Compute sin(a) and cos(a). More...

Function Documentation

atan2_approx()

CFixed_15_16 atan2_approx	(	CFixed_15_16	y,
		CFixed_15_16	x
	)

Inaccurate approximation of atan2 over fixed-point numbers.

Maximum error is almost 0.08 radians (4.5 degrees).

sincos_approx()

void sincos_approx	(	CFixed_15_16	a,
		CFixed_15_16 &	sin_out,
		CFixed_15_16 &	cos_out
	)

Compute sin(a) and cos(a).

Maximum error for -2pi < a < 2pi is almost 0.0005.