Javascript Math Floor Vs Round

Math round vs math ceil vs math floor javascript performance comparison.

Javascript math floor vs round.

Floor will always round down. Math floor always rounds down to the nearest integer while math round will round up or down depending on what side of 5 the number falls on. If you want to generate a random number between 0 and 2 take the following examples. Test case created by on 2011 12 8.

Because floor is a static method of math you always use it as math floor rather than as a method of a math object you created math is not a constructor. When you feed math round a 500000 value it will round to the nearest even integer if i recall correctly. For accurate results please disable firebug before running the tests. The math floor method is used to round off the number passed as a parameter to its nearest integer in downward direction of rounding i e.

A number representing the largest integer less than or equal to the specified number. So the basic answer is that you use which one gets the result you expect. Java math class provides useful methods for performing the math s operations like exponential logarithm roots and trigonometric equations too. This tutorial teaches java math class with examples.

Math floor x parameters x a number. If the passed argument is an integer the value will not be rounded. Math floor rounds the number generated by math random down to the last integer meaning that it would always just round down to 0. In essence it is floor number number modulus 1.

This method accepts single parameter asmentioned above and described below. Towards the lesser value. When it comes to generating random numbers though math floor has a more even distribution than math round. It is the value which is to be tested for math floor.

The floor method rounds a number downwards to the nearest integer and returns the result. Math floor just rounds down to the nearest integerer while math round searches for the nearest integer.