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hfossli/CGFloatEqual.m

Created May 14, 2014 11:24
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CGFloatEqual
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CGFloatEqual.m
BOOL CGFloatEqual(CGFloat a, CGFloat b, CGFloat accuracy)
{
#if CGFLOAT_IS_DOUBLE
if (fabs(a-b) < accuracy * DBL_EPSILON * fabs(a+b) || fabs(a-b) < DBL_MIN)
{
return YES;
}
#else
if (fabs(a-b) < accuracy * FLT_EPSILON * fabs(a+b) || fabs(a-b) < FLT_MIN)
{
return YES;
}
#endif
return NO;
}
@AlbertRenshaw
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AlbertRenshaw commented Apr 22, 2019 •
edited

What is a suggested value for accuracy? Should it be like 0.9999f and we add more 9s to lower the tolerance?

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