Operations: +  –  *  /  ^

Constants: e, epsilon, phi, pi

Functions: abs, sqrt, sgn, H, Pi, floor, ceil, min, max,

Functions: sin, cos, tan, csc, sec, cot,

Functions: asin, acos, atan, acsc, asec, acot,

Functions: exp, ln, log, log2, log10, sinh, cosh