operator + method
Returns this + addition
The resulting scale is the larger scale of the two operands.
Implementation
Fixed operator +(Fixed addition) {
final targetScale = max(scale, addition.scale);
final scaledThis =
_rescale(minorUnits, existingScale: scale, targetScale: targetScale);
final scaledAddition = _rescale(addition.minorUnits,
existingScale: addition.scale, targetScale: targetScale);
return Fixed.fromBigInt(scaledThis + scaledAddition, scale: targetScale);
}