Computer Security Resource Center

Computer Security Resource Center

Computer Security
Resource Center

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⎾x⏋

Abbreviation(s) and Synonym(s):

None

Definition(s):

  The least integer that is not less than the real number x.
Source(s):
NIST SP 800-38B
NIST SP 800-38C
NIST SP 800-38D

  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.
Source(s):
NIST SP 800-185

  The ceiling of x; the smallest integer ≥ x. For example,⎾5⏋= 5 and⎾5.2⏋= 6.
Source(s):
NIST SP 800-135 Rev. 1
NIST SP 800-90A Rev. 1

  The ceiling of x; the smallest integer ≥ x. For example,⎾5⏋= 5 and⎾5.3⏋= 6.
Source(s):
NIST SP 800-56A Rev. 2
NIST SP 800-56B Rev. 1