What is the precision of ASiCalc?
ASiCalc performs all internal operations with a precision of 17 digits. Still only 15 significant digits are displayed to compensate for internal errors. The actual precision depends upon complexity of the expression being calculated. Not all the digits of the displayed result will be accurate. Each operation on any floating point unit introduces some error (due to rounding and some other factors). For complex operations this error can multiply resulting in reduced precision. Roughly you can assume the first 10 significant digits to be accurate, though not in all cases.