[944] | 1 | #*------------------------------------------------------------------- |
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| 2 | * EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC. |
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| 3 | * |
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| 4 | * This LIBRARY is free software; you can distribute it and/or modify |
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| 5 | * it under the therms of the ALSOC FREE LICENSE as available at |
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| 6 | * http://www.enq.ufrgs.br/alsoc. |
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| 7 | * |
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| 8 | * EMSO is distributed under the terms of the ALSOC LICENSE as |
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| 9 | * available at http://www.enq.ufrgs.br/alsoc. |
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| 10 | *----------------------------------------------------------------------- |
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| 11 | * Author: Jonathan Ospino P. |
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| 12 | * $Id: Math_Fcns.mso 2012$ |
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| 13 | *---------------------------------------------------------------------*# |
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| 14 | |
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| 15 | using "types"; |
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| 16 | |
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| 17 | Model Math_Fcns |
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| 18 | |
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| 19 | ATTRIBUTES |
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| 20 | Pallete=true; |
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| 21 | Icon="icon/Math_Fcns"; |
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| 22 | Info="== Math functions block == |
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| 23 | |
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| 24 | It computes the functions abs(x), sign(x), ln(x), log10(x), x^N, or Nth-Root(x), |
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| 25 | where x is the input signal. |
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| 26 | The resulting value is assigned to the output variable"; |
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| 27 | |
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| 28 | PARAMETERS |
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| 29 | Select_function as Switcher(Valid=["|x|","sign(x)","e^x","ln(x)","log10(x)","x^n","Nth-Root(x)"],Default="|x|"); |
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| 30 | n as Real(Brief="Only to be used in the x^n computation",Default=2); |
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| 31 | N as positive(Brief="Only to be used in Nth-Root(x) computation",Default=2); |
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| 32 | |
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| 33 | VARIABLES |
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| 34 | in In as Real(Brief="Input signal",PosX=0,PosY=0.5); |
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| 35 | out Out as Real(Brief="Output signal",Protected=true,PosX=1,PosY=0.5); |
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| 36 | |
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| 37 | EQUATIONS |
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| 38 | |
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| 39 | switch Select_function |
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| 40 | case "|x|": |
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| 41 | Out=abs(In); |
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| 42 | case "sign(x)": |
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| 43 | Out=sign(In); |
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| 44 | case "e^x": |
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| 45 | Out=exp(In); |
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| 46 | case "ln(x)": |
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| 47 | Out=ln(In); |
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| 48 | case "log10(x)": |
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| 49 | Out=log(In); |
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| 50 | case "x^n": |
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| 51 | Out=In^n; |
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| 52 | case "Nth-Root(x)": |
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| 53 | Out=In^(1/N); |
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| 54 | end |
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| 55 | |
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| 56 | end |
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