Mathematica can efficiently exchange data in all standard numerical formats—allowing convenient symbolic specification of data subsets and data elements.
ExponentStep is an option for NumberForm and related functions that determines in what steps exponents are taken to increase when scientific notation is used.
$ProcessID gives the ID assigned to the Mathematica kernel process by the operating system under which it is run.
$Version is a string that gives the version of the Mathematica kernel you are running.
Round
(Built-in Mathematica Symbol) Round[x] gives the integer closest to x. Round[x, a] rounds to the nearest multiple of a.
LogicalExpand[expr] expands out logical combinations of equations, inequalities, and other functions.
Not
(Built-in Mathematica Symbol) ! expr is the logical NOT function. It gives False if expr is True, and True if it is False.
SetPrecision[expr, p] yields a version of expr in which all numbers have been set to have precision p.
BernoulliB[n] gives the Bernoulli number B_n. BernoulliB[n, x] gives the Bernoulli polynomial B_n (x).
GaussianIntegers is an option for FactorInteger, PrimeQ, Factor, and related functions that specifies whether factorization should be done over Gaussian integers.