Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  J  |  K  |  L  |  M  |  N  |  O  |  P  |  Q  |  R  |  S  |  T  |  U  |  V  |  W  |  X  |  Y  |  Z

### ⎾x⏋

Definitions:

The ceiling of x; the smallest integer ≥ x. For example,⎾5⏋= 5 and⎾5.2⏋= 6.
Sources:
For a real number x, ⌈x⌉ is the least integer that is not strictly less than x. For example, ⌈3.2⌉ = 4, ⌈−3.2⌉ = −3, and ⌈6⌉=6.
Sources:
The ceiling of x; the smallest integer \(\geq\) x. For example, \(\lceil\)5\(\rceil\) = 5 and \(\lceil\)5.3\(\rceil\) = 6.
Sources:
NIST SP 800-56B Rev. 2 under ┌x┐

The smallest integer that is larger than or equal to X. The ceiling of X. For example, \(\lceil\)8.2\(\rceil\) = 9.
Sources:
NIST SP 800-108r1 [August 2022 (Includes updates as of 02-02-2024)] under \(\lceil\)X\(\rceil\)