entier function, greatest integer function, integral part function
The function of a real variable that assigns to a real number the largest integer . The modern notation is ; the classical notation is . In computer science and computer languages it is often denoted by .
The related ceiling function gives the smallest integer . The fractional part function is defined as
The nearest integer function is
|[a1]||R.L. Graham, D.E. Knuth, O. Patashnik, "Concrete mathematics: a foundation for computer science" , Addison-Wesley (1990)|
|[a2]||S. Wolfram, "Mathematica: Version 3" , Addison-Wesley (1996) pp. 718–719|
Floor function. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Floor_function&oldid=33154