Re:Show HN: Advanced Mathematics Library for Node.js and Jav...
by Xcelerate on Tuesday December 11, 2012 @03:32PM
(#4906642)
Ah, ok. Thank you. This isn't a problem for me then. It appears to be just typical floating-point math. I was thinking perhaps JavaScript did something else weird that I didn't know about.
It is the same as trying to store 1/3 = 0.333... as a finite decimal. Basically, a floating point number only has a finite space to put the component after the decimal point, so it gets truncated and made inaccurate, just like truncating 1/3 to 0.3333 will mean that calculations become wrong: 3*0.3333 = 0.9999 ≠ 1.