floor [function]
floor( x )
returns the largest integer that is not bigger than x, as real
floor( 3.4 ); // real (3) floor( 3.8 ); // real (3) floor( 4.2 ); // real (4) floor( -3.1 ); // real (-4)
x, as realfloor( 3.4 ); // real (3) floor( 3.8 ); // real (3) floor( 4.2 ); // real (4) floor( -3.1 ); // real (-4)