What is the difference between floor() and rint() functions.

Question

Can anyone pls help me to understand the differences between them

Answer 1

I hadn’t heard of rint() so I will start with floor()

In maths, the floor and ceiling functions are used to round to the nearest whole number. Think of a room: the floor will be my lowest point and the ceiling the highest

floor(4.95) = 4
ceiling(4.95) = 5
floor(8.05) = 8
ceiling(8.05) = 9
floor(10) = ceiling(10) = 10

(ceiling in Java and JavaScript is ceil() )

As for rint(): this appears to round down but to the nearest even integer

Math.rint(4.2) = 4.0
Math.round(4.2) = 4
Math.rint(4.5) = 4.0
Math.round(4.5) = 5
Math.rint(4.501) = 5.0
Math.round(4.501) = 5

which i agree with a commenter asking here why would you want that :’) stackoverflow.com/questions/37256550/difference-between-math-rint-and-math-round-in-java/37257027