Command: floor
  
Syntax: 
  x2 = floor(x1)
  
Description: 
  Return the greatest integer less than or equal to x1. (Round
  down to an integer.)
  
Comments: 
  This function may be applied to an atom or to all elements
  of a sequence.
  
Example: 
     y = floor({0.5, -1.6, 9.99, 100})
       -- y is {0, -2, 9, 100}
 
See Also: 
  remainder
  
