# Math

## InverseBlockConstraints

Construct inverse model by requiring that two inputs and two outputs are identical

## Gain

Output the product of a gain value with the input signal

## MatrixGain

Output the product of a gain matrix with the input signal vector

## Sum

Output the sum of the elements of the input vector

## Feedback

Output difference between commanded and feedback input

Output the sum of the two inputs

Output the sum of the three inputs

## Product

Output product of the two inputs

## Division

Output first input divided by second input

## Abs

Output the absolute value of the input

## Sign

Output the sign of the input

## Sqrt

Output the square root of the input (input >= 0 required)

## Sin

Output the sine of the input

## Cos

Output the cosine of the input

## Tan

Output the tangent of the input

## Asin

Output the arc sine of the input

## Acos

Output the arc cosine of the input

## Atan

Output the arc tangent of the input

## Atan2

Output atan(u1/u2) of the inputs u1 and u2

## Sinh

Output the hyperbolic sine of the input

## Cosh

Output the hyperbolic cosine of the input

## Tanh

Output the hyperbolic tangent of the input

## Exp

Output the exponential (base e) of the input

## Power

Output the power to a base of the input

## Log

Output the logarithm (default base e) of the input (input > 0 required)

## Log10

Output the base 10 logarithm of the input (input > 0 required)

## WrapAngle

Wrap angle to interval ]-pi,pi] or [0,2*pi[

## Mean

Calculate mean over period 1/f

## RootMeanSquare

Calculate root mean square over period 1/f

## Variance

Calculates the empirical variance of its input signal

## Max

Pass through the largest signal

## Min

Pass through the smallest signal