The main factor determining the precision of KCalc is whether your libc and libmath
supports the C data type long double. If this is the case, KCalc will detect this
at compile time and use it as its fundamental data type to represent numbers.
Adjust the Precision in KCalc's
Configure dialog so that the above computations
work correctly. I recommend a precision of 14 if the fundamental data type
for your copy of KCalc is long double, otherwise 8 or 10. Higher precision doesn't necessarily lead to better results. Play with
the precision and you will see what I mean. |