rtruncated_normal: Truncated Normal Distribution Sampling Algorithm
In SMAC-Group/gmwm: Generalized Method of Wavelet Moments

Enables sampling from a truncated normal

1	rtruncated_normal(n, mu, sigma, a, b)

`n`	An `unsigned int` indicating the number of observations to generate.
`mu`	A `double` indicating the mean of the normal.
`sigma`	A `double` indicating the standard deviation of the normal.
`a`	A `double` that is the lower bound of the truncated normal.
`b`	A `double` that is the upper bound of the truncated normal.