numutil.cpp File Reference

#include <cmath>

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Macros
#define	_NUMUTIL_CPP

Functions
bool	almostEqual (float x, float y, float epsilon)
bool	almostEqual (double x, double y, double epsilon)
bool	almostEqual (long double x, long double y, long double epsilon)

Macro Definition Documentation

#define _NUMUTIL_CPP

Definition at line 19 of file numutil.cpp.

Function Documentation

bool almostEqual	(	float	x,
		float	y,
		float	epsilon
	)

Definition at line 27 of file numutil.cpp.

Referenced by Interpol::setXmax(), and Interpol::setXmin().

{
    if (x == 0.0 && y == 0.0) {
        return true;
    }

    if (fabs(x) > fabs(y)) {
        return fabs((x - y) / x) < epsilon;
    } else {
        return fabs((x - y) / y) < epsilon;
    }
}

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bool almostEqual	(	double	x,
		double	y,
		double	epsilon
	)

Definition at line 40 of file numutil.cpp.

{
    if (x == 0.0 && y == 0.0){
        return true;
    }
    if (fabs(x) > fabs(y)){
        return fabs((x - y) / x) < epsilon;
    } else {
        return fabs((x - y) / y) < epsilon;
    }
}

bool almostEqual	(	long double	x,
		long double	y,
		long double	epsilon
	)

Definition at line 52 of file numutil.cpp.

{
    if (x == 0.0 && y == 0.0){
        return true;
    }
    if (std::fabs(x) > std::fabs(y)){
        return std::fabs((x - y) / x) < epsilon;
    } else {
        return std::fabs((x - y) / y) < epsilon;
    }
}