Round a double-precision floating-point number toward positive infinity.
Round a number to a specific number of decimal places: 1.234 → 1.2
The exact-math is a set of methods for addition, subtraction, multiplication, division, rounding, ceiling, flooring and powering calculations. It can be used with big number as it handles the floating point problem.
A rounding library for JavaScript that behaves predictably (unlike Math.round, Math.floor, Math.ceil).