This mrbgem provides complex number support for mruby, offering mathematical functions that can handle complex numbers, similar to Ruby's standard cmath library.

This gem utilizes C99 _Complex features. Therefore, you will need a C compiler that supports C99 or a later version to build and use this gem.

The CMath module includes the following mathematical functions:

• exp(z): Computes the exponential of z.
• log(z): Computes the natural logarithm of z.
• log(z, b): Computes the logarithm of z with base b.
• log2(z): Computes the base-2 logarithm of z.
• log10(z): Computes the base-10 logarithm of z.
• sqrt(z): Computes the square root of z.
• sin(z): Computes the sine of z.
• cos(z): Computes the cosine of z.
• tan(z): Computes the tangent of z.
• asin(z): Computes the arc sine of z.
• acos(z): Computes the arc cosine of z.
• atan(z): Computes the arc tangent of z.
• sinh(z): Computes the hyperbolic sine of z.
• cosh(z): Computes the hyperbolic cosine of z.
• tanh(z): Computes the hyperbolic tangent of z.
• asinh(z): Computes the inverse hyperbolic sine of z.
• acosh(z): Computes the inverse hyperbolic cosine of z.
• atanh(z): Computes the inverse hyperbolic tangent of z.

Here's a simple example of how to use CMath to calculate the square root of a negative number:

# Assuming mruby is built with mruby-cmath

# Calculate the square root of -4
result = CMath.sqrt(-4)

# result will be a Complex number (0+2i)
puts result.real      # Output: 0.0
puts result.imaginary # Output: 2.0