abs, sign absolute value, arithmetic sign
sqrt square root
floor, ceil round down, round up to integer
conj complex conjugation
pi the constant 3.14159265358979323846...
sin, cos, tan trigonometric functions (of radians)
asin, acos, atan inverse trigonometric functions
sinh, cosh, tanh, sech, csch hyperbolic functions
asinh, acosh, atanh inverse hyperbolic functions
exp, log, log10 exponential and logarithmic functions
min, max find minimum, maximum of array
sum, avg find sum, average of array
random random number generator
The atan function takes one or two arguments; atan(t) returns a value in the range (-p/2,p/2]), while atan(y,x) returns the counterclockwise angle from (1,0) to (x,y) in the range (-p,p]).
The abs function allows any number of arguments; for example, abs(x,y,z) is the same as sqrt(x^2+y^2+z^2). The sign satisfies sign(0)==1 and abs(z)*sign(z)==z always (even when z is complex).
The min and max functions return a scalar result when presented with a single argument, but the pointwise minimum or maximum when presented with multiple arguments.
The min, max, sum, and single argument abs functions return integer results when presented integer arguments; the other functions will promote their arguments to a real type and return reals.