Returns the complex conjugate of z.
Returns the hyperbolic cosine of z.
Approximation of Euler's number, equivalent to (exp .1.0)
Approximation of pi, equivalent to (.atan 0.0 -1.0)
Returns the hyperbolic sine of z.
Returns 1 if n is positive, -1 if n is
negative, and 0 otherwise. If n is exact, the result is
exact, otherwise the result is inexact.
Returns (* z z)).