= List of desired functions internal to the new modeling language =

 * exponential: exp(x)
 * natural logarithm: ln(x)
 * base 10 logarithm: log10(x)
 * square root: sqrt(x)
 * trigonometric functions: sin(x), cos(x), tan(x), asin(x), acos(x), atan(x)
 * maximum and minimum: max(a), b), min(a, b)
 * absolute value abs(x)
 * gaussian cumulative distribution function: normcdf(x, mu, sigma)
 * gaussian probability density function: normpdf(x, mu, sigma)
 * gauss error function: erf(x)