Any Java function can be called. Those from the sources below are automatically statically imported for easy access. We only show the most useful ones.
From java.lang.Math: (note that all trigonometric operations use angles expressed in radian)
                double abs(double value),
              
                double  acos(double a) (arc cosine),
              
                double  asin(double a),
              
                double  atan(double a),
              
                double  cbrt(double a) (cube root),
              
                double  ceil(double a) (ceiling),
              
                double  cos(double a) (cosine),
              
                double  cosh(double x) (hyperbolic cosine),
              
                double  exp(double a) (exponential base e),
              
                double  floor(double a) (floor),
              
                double  log(double a) (logarithm base e),
              
                double  log10(double a) (logarithm base 10),
              
                double  max(double a, double b),
              
                double  min(double a, double b),
              
                double  pow(double a, double b) (a to the power b),
              
                double  signum(double d),
              
                double  sin(double a),
              
                double  sinh(double x),
              
                double  sqrt(double a) (square root),
              
                double  tan(double a),
              
                double  tanh(double x),
              
                E,
              
                PI.
              
                double erf(double x) (error function),
              
                double inverseErf(double z),
              
                double logistic(double x),
              
                double logit(double x),
              
                double logBinomial(int n, int k),
              
                double lnGamma(double alpha),
              
                double logFactorial(int input),
              
                double multivariateLogGamma(int dim, double a) (Multivariate Gamma function).
              
Some common operations are also defined as methods or extensions and are documented in the page on built-in types.