Why the of decimal?

[ghost]

I'm wondering why the library uses decimal instead of float (or even double) which would have the range to represent any physically plausible dimension. As decimal isn't hardware-native performance of operations can reasonably be expected to be significantly slower.

A (very) quick search for some backing evidence suggests...

"Addition, subtraction, multiplication, comparison operations on decimal are ~15 times slower than operations on long or double; division is ~30 times slower."
https://stackoverflow.com/questions/366852/c-sharp-decimal-datatype-performance

(As the library code is around a few 1000 LOC I may try this...)