This is because math round is overloaded and one version of the method returns an int and the other version returns a long.
Math floor java int.
Since the definition of floor function has double datatype as argument you can pass int float or long as arguments.
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The java lang math floor is used to find the largest integer value which is less than or equal to the argument and is equal to the mathematical integer of a double value.
The java lang math floor returns the double value that is less than or equal to the argument and is equal to the nearest mathematical integer.
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Round round10 55 55 1.
Because these datatypes could implicitly promote to double.
Int x int math round 2 6.
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This java math floor function is to return the closest double value which is less than or equal to the specified expression or value and equal to a mathematical integer.
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This method has the following variants double floor double d double floor float f parameters.
The java floor function is one of the math or mathematical functions available in java math library.
Here is the detail of parameters a double or float primitive data type.
If the argument value is already equal to a mathematical integer then the result is the same as the argument.
Syntax public static double floor double a.
The method floor gives the largest integer that is less than or equal to the argument.
Decimal floor const floor10 value exp decimaladjust floor value exp.
Public static double floor double a.
Note that as a practical matter you may need to cast the math round result to an int like this.
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If the argument is integer then the result is integer.
Cast to an int.
Exp decimal round const round10 value exp decimaladjust round value exp.
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.
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Java math floor floor accepts double value as an argument and returns the largest integer which is less than or equal to the argument.
If the argument is nan or an infinity or positive zero or negative zero then the result is the same as the argument.
Value 1 exp.
Floor 返回不大于的最大整数 round 则是 4 舍 5 入的计算 入的时候是到大于它的整数 round 表示 四舍五入 算法为math floor x 0 5 即将原来的数字加上 0 5 后再向下取整 所以 math round 11 5 的结果为 12 math round 11 5 的结果为 11 我们先通过以下实例来看看 java math floor ceil rint 及 round 各个.
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Java floor function syntax.
Following is the syntax of floor method.