11.3 Epsilon necessary in compare method?

[theconnorpower]

I thought it was always best practice to compare using an epsilon when comparing float values in C. Am I wrong? No one else seems to have implemented this approach. Example below.

Code: (Objective-C)

-(int) compare: (Fraction *)f
{
	double selfNum = [self convertToNum];
	double fNum = [f convertToNum];
	
	if (fabs(selfNum - fNum) < DBL_EPSILON)
		return 0;
	else if (selfNum > fNum)
		return 1;
	else
		return -1;
}

[theconnorpower]

Bumpitty bump?

[skochan]

Yeah, I do think it's a good idea to compare floats against some epsilon due to the inherent inaccuracy of representing floating point numbers.

Cheers,

Steve

[theconnorpower]

Awesome.

Thanks Steve.