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Floor rounds X to negative infinity and returns the nearest whole integer nubmer.
The absolute value of X must be less than MaxInt.

var x1,x2,x3 : integer;
	
x1 := Floor(-1.9);
x2 := Floor(1.9);
x3 := Floor(-5.0);

//x1 = -2
//x2 = 1
//x3 = -5