Java Math floor functions to get highest double value of a number

Math.floor()

Returns the highest double value lower or equal to the input number and equal to an integer.
Syntax

Math.floor(double input_number)

Output is a double value .

	System.out.println(Math.floor(-20));   // -20.0
	System.out.println(Math.floor(-20.56));// -21.0
	System.out.println(Math.floor(-20.12));// -21.0
	System.out.println(Math.floor(20));    // 20.0
	System.out.println(Math.floor(20.56)); // 20.0
	System.out.println(Math.floor(20.12)); // 20.0

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Math.floor()

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