MathIntegerLibrary of Integer mathematical functions as input/output blocks 
Set Integer expression that is associated with the first active input signal 

Sum of Integers: y = k[1]*u[1] + k[2]*u[2] + ... + k[n]*u[n] 

Product of Integer: y = u[1]*u[2]* ... *u[n] 

Add input to previous value of output, if rising edge of trigger port 
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This package contains basic mathematical operations on Integer signals.