1 | #*------------------------------------------------------------------- |
---|

2 | * EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC. |
---|

3 | * |
---|

4 | * This LIBRARY is free software; you can distribute it and/or modify |
---|

5 | * it under the therms of the ALSOC FREE LICENSE as available at |
---|

6 | * http://www.enq.ufrgs.br/alsoc. |
---|

7 | * |
---|

8 | * EMSO is distributed under the terms of the ALSOC LICENSE as |
---|

9 | * available at http://www.enq.ufrgs.br/alsoc. |
---|

10 | *----------------------------------------------------------------------- |
---|

11 | * Author: Jonathan Ospino P. |
---|

12 | * $Id: Math_Fcns.mso 2012$ |
---|

13 | *---------------------------------------------------------------------*# |
---|

14 | |
---|

15 | using "types"; |
---|

16 | |
---|

17 | Model Math_Fcns |
---|

18 | |
---|

19 | ATTRIBUTES |
---|

20 | Pallete=true; |
---|

21 | Icon="icon/Math_Fcns"; |
---|

22 | Info="== Math functions block == |
---|

23 | |
---|

24 | It computes the functions abs(x), sign(x), ln(x), log10(x), x^N, or Nth-Root(x), |
---|

25 | where x is the input signal. |
---|

26 | The resulting value is assigned to the output variable"; |
---|

27 | |
---|

28 | PARAMETERS |
---|

29 | Select_function as Switcher(Valid=["|x|","sign(x)","e^x","ln(x)","log10(x)","x^n","Nth-Root(x)"],Default="|x|"); |
---|

30 | n as Real(Brief="Only to be used in the x^n computation",Default=2); |
---|

31 | N as positive(Brief="Only to be used in Nth-Root(x) computation",Default=2); |
---|

32 | |
---|

33 | VARIABLES |
---|

34 | in In as Real(Brief="Input signal",PosX=0,PosY=0.5); |
---|

35 | out Out as Real(Brief="Output signal",Protected=true,PosX=1,PosY=0.5); |
---|

36 | |
---|

37 | EQUATIONS |
---|

38 | |
---|

39 | switch Select_function |
---|

40 | case "|x|": |
---|

41 | Out=abs(In); |
---|

42 | case "sign(x)": |
---|

43 | Out=sign(In); |
---|

44 | case "e^x": |
---|

45 | Out=exp(In); |
---|

46 | case "ln(x)": |
---|

47 | Out=ln(In); |
---|

48 | case "log10(x)": |
---|

49 | Out=log(In); |
---|

50 | case "x^n": |
---|

51 | Out=In^n; |
---|

52 | case "Nth-Root(x)": |
---|

53 | Out=In^(1/N); |
---|

54 | end |
---|

55 | |
---|

56 | end |
---|