function package contains function objects that wrap the
      methods contained in Math, as well as common
      mathematical functions such as the gaussian and sinc functions.See: Description
| Class | Description | 
|---|---|
| Abs | Absolute value function. | 
| Acos | Arc-cosine function. | 
| Acosh | Hyperbolic arc-cosine function. | 
| Add | Add the two operands. | 
| Asin | Arc-sine function. | 
| Asinh | Hyperbolic arc-sine function. | 
| Atan | Arc-tangent function. | 
| Atan2 | Arc-tangent function. | 
| Atanh | Hyperbolic arc-tangent function. | 
| Cbrt | Cube root function. | 
| Ceil | ceilfunction. | 
| Constant | Constant function. | 
| Cos | Cosine function. | 
| Cosh | Hyperbolic cosine function. | 
| Divide | Divide the first operand by the second. | 
| Exp | Exponential function. | 
| Expm1 | ex-1function. | 
| Floor | floorfunction. | 
| Gaussian | 
  Gaussian function. | 
| Gaussian.Parametric | Parametric function where the input array contains the parameters of
 the Gaussian, ordered as follows:
 
  Norm
  Mean
  Standard deviation
  | 
| HarmonicOscillator | 
  simple harmonic oscillator function. | 
| HarmonicOscillator.Parametric | Parametric function where the input array contains the parameters of
 the harmonic oscillator function, ordered as follows:
 
  Amplitude
  Angular frequency
  Phase
  | 
| Identity | Identity function. | 
| Inverse | Inverse function. | 
| Log | Natural logarithm function. | 
| Log10 | Base 10 logarithm function. | 
| Log1p | log(1 + p)function. | 
| Logistic | 
  Generalised logistic function. | 
| Logistic.Parametric | Parametric function where the input array contains the parameters of
 the  logistic function, ordered as follows:
 
  k
  m
  b
  q
  a
  n | 
| Logit | 
  Logit function. | 
| Logit.Parametric | Parametric function where the input array contains the parameters of
 the logit function, ordered as follows:
 
  Lower bound
  Higher bound
  | 
| Max | Maximum function. | 
| Min | Minimum function. | 
| Minus | Minus function. | 
| Multiply | Multiply the two operands. | 
| Pow | Power function. | 
| Power | Power function. | 
| Rint | rintfunction. | 
| Sigmoid | 
  Sigmoid function. | 
| Sigmoid.Parametric | Parametric function where the input array contains the parameters of
 the  sigmoid function, ordered
 as follows:
 
  Lower asymptote
  Higher asymptote | 
| Signum | signumfunction. | 
| Sin | Sine function. | 
| Sinc | Sinc function,
 defined by | 
| Sinh | Hyperbolic sine function. | 
| Sqrt | Square-root function. | 
| StepFunction | |
| Subtract | Subtract the second operand from the first. | 
| Tan | Tangent function. | 
| Tanh | Hyperbolic tangent function. | 
| Ulp | ulpfunction. | 
      The function package contains function objects that wrap the
      methods contained in Math, as well as common
      mathematical functions such as the gaussian and sinc functions.
    
Copyright © 2003–2016 The Apache Software Foundation. All rights reserved.