## Description

# Trigonometric and transcendental functions for complex numbers.¶ ↑

CMath is a library that provides trigonometric and
transcendental functions for complex numbers. The functions in this module
accept integers, floating-point numbers or complex numbers as arguments.

Note that the selection of functions is similar, but not identical, to that
in module math. The reason for having two modules is that some users
aren't interested in complex numbers, and perhaps don't even know
what they are. They would rather have Math.sqrt(-1) raise an exception than
return a complex number.

For more information you can see Complex class.

## Usage¶ ↑

To start using this library, simply require cmath library:

require "cmath"