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X

Definition(s):

  The smallest integer that is larger than or equal to X. The ceiling of X.
Source(s):
NIST SP 800-108

  Byte string to be converted to or from an integer; the output of conversion from an ASCII string.
Source(s):
NIST SP 800-56B Rev. 2
NIST SP 800-56B Rev. 1 [Superseded]