Java Math Floor Vs Cast To Int

The java lang math ceil returns the double value that is greater than or equal to the argument and is equal to the nearest mathematical integer.

Java math floor vs cast to int.

The java lang math floor double a returns the largest closest to positive infinity double value that is less than or equal to the argument and is equal to a mathematical integer. By the way you must remember that type casting just get rid of anything after the decimal point they don t perform any rounding or flooring. 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. With a method like truncatesafely we can combine math ceil and math floor to avoid problems with casting to int.

If the argument is integer then the result is integer. For important numeric applications i would use math floor math round or math ceil. Note that as a practical matter you may need to cast the math round result to an int like this. Towards the lesser value.

If the argument is nan or an infinity or positive zero or negative zero. Int x int math round 2 6. Since a float is a bigger than int you can convert a float to an int by simply down casting it e g. Java floor method the method floor gives the largest integer that is less than or equal to the argument.

It is the value which is to be tested for math floor. For cases where a simple truncation of a small value is needed an int cast is sufficient. This is because math round is overloaded and one version of the method returns an int and the other version returns a long. Int 4 0f will give you integer 4.

If the argument is nan or an infinity or positive zero or negative zero then the result is the same as the argument. If the argument value is less than zero but greater than 1 0 then. If the argument value is already equal to a mathematical integer then the result is the same as the argument.