Constants
math-related constants (pi, e, logarithm constants, ...),
computer-related constants (MinDouble, MaxDouble. ...)

General Math Functions
arithmetic functions (ceil, floor, hypot, muldiv, poly, round, trunc, ...),
logarithm/exponential functions (ln, log, log2, exp, power, ...),
trigonometric functions (sin, cos, tan, arcsin, arccos, arctan, atan2, ...)
conversions and formatting (FloatToStr, IntToStr, Format, Trim, ...),
financial functions (NetPresentValue, Payment, SLNDepreciation, ...),
sorting, discrete math (quicksort, insertion sort, equivalence classes, ...),
miscellaneous (IsNaN, Get/Set87ControlWord, GetRoundMode, ...)

Engineering Mathematics
hyperbolic functions (sinh, cosh, tanh, inverse functions, ...),
special functions (bessel functions, beta, gamma, erf, ...),
complex math and functions,
linear algebra, matrices, eigenvalues, eigenvectors,
digital signal processing, fourier transforms, FFTs
ordinary and partial differential equations

Numerical Methods
interpolation, extrapolation,
numerical integration/derivatives,
polynomials, functional evaluation, Chebyshev approximation,
optimization (simplex, powell, ...),
root finding, non-linear equations

Statistics and Probability
statistics (min, max, sum, mean, stddev, skew, kurtosis, ...),
probability (binomial, pnorm, randg, factorial, Stirling, ...)
curve fitting, regression, least squares, data modeling

Cryptography and Multiple-Precision Arithmetic

Parsers and Mathematical Expression Evaluators