isSmallerD function
Compares two doubles and determines if the first value is smaller than the second value to within the specified number of decimal places or not.
Implementation
bool isSmallerD(double a, double b, double maximumAbsoluteError) {
// If A or B are a NAN, return false. NANs are equal to nothing,
// not even themselves, and thus they're not bigger or
// smaller than anything either
if (a.isNaN || b.isNaN) {
return false;
}
return compareToD(a, b, maximumAbsoluteError) < 0;
}