| 1 | /* |
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| 2 | * ---------------------------------------------------------------------- |
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| 3 | * INTERFACE: Matlab Rappture Library Source |
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| 4 | * |
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| 5 | * [unitsHandle,err] = rpUnitsDefineUnit(unitSymbol, basisHandle) |
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| 6 | * |
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| 7 | * ====================================================================== |
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| 8 | * AUTHOR: Derrick Kearney, Purdue University |
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| 9 | * Copyright (c) 2004-2005 Purdue Research Foundation |
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| 10 | * |
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| 11 | * See the file "license.terms" for information on usage and |
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| 12 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 13 | * ====================================================================== |
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| 14 | */ |
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| 15 | |
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| 16 | #include "RpMatlabInterface.h" |
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| 17 | |
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| 18 | /**********************************************************************/ |
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| 19 | // METHOD: [unitsHandle,err] = rpUnitsDefineUnit(unitSymbol, basisHandle) |
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| 20 | /// Define a new Rappture Units type. |
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| 21 | /** |
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| 22 | * Define a new Rappture Units type which can be searched for using |
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| 23 | * @var{unitSymbol} and has a basis of @var{basisHandle}. Because of |
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| 24 | * the way the Rappture Units module parses unit names, complex units must |
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| 25 | * be defined as multiple basic units. See the RpUnits Howto for more |
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| 26 | * information on this topic. A @var{basisHandle} equal to 0 means that |
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| 27 | * the unit being defined should be considered as a basis. Unit names must |
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| 28 | * not be empty strings. |
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| 29 | * |
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| 30 | * The first return value, @var{unitsHandle} represents the handle of the |
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| 31 | * instance of the RpUnits object inside the internal dictionary. On |
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| 32 | * success this value will be greater than zero (0), any other value is |
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| 33 | * represents failure within the function. The second return value |
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| 34 | * @var{err} represents the error code returned from the function. |
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| 35 | * |
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| 36 | * Error code, err=0 on success, anything else is failure. |
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| 37 | */ |
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| 38 | |
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| 39 | void mexFunction(int nlhs, mxArray *plhs[], |
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| 40 | int nrhs, const mxArray *prhs[]) |
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| 41 | { |
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| 42 | char *unitSymbol = NULL; |
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| 43 | const RpUnits* basis = NULL; |
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| 44 | RpUnits* myUnit = NULL; |
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| 45 | int retHandle = 0; |
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| 46 | int basisHandle = 0; |
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| 47 | int retIndex = 0; |
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| 48 | int err = 1; |
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| 49 | |
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| 50 | /* Check for proper number of arguments. */ |
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| 51 | if (nrhs != 2) |
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| 52 | mexErrMsgTxt("Two input required."); |
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| 53 | else if (nlhs > 2) |
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| 54 | mexErrMsgTxt("Too many output arguments."); |
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| 55 | |
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| 56 | unitSymbol = getStringInput(prhs[0]); |
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| 57 | basisHandle = getIntInput(prhs[1]); |
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| 58 | |
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| 59 | /* Call the C subroutine. */ |
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| 60 | if (basisHandle > 0) { |
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| 61 | basis = getObject_UnitsStr(basisHandle); |
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| 62 | } |
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| 63 | |
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| 64 | if (unitSymbol) { |
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| 65 | myUnit = RpUnits::define(unitSymbol,basis); |
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| 66 | |
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| 67 | if (myUnit) { |
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| 68 | retHandle = storeObject_UnitsStr(myUnit->getUnitsName()); |
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| 69 | if (retHandle) { |
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| 70 | err = 0; |
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| 71 | } |
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| 72 | } |
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| 73 | } |
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| 74 | |
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| 75 | /* Set C-style string output_buf to MATLAB mexFunction output*/ |
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| 76 | plhs[0] = mxCreateDoubleScalar(retHandle); |
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| 77 | plhs[1] = mxCreateDoubleScalar(err); |
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| 78 | |
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| 79 | return; |
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| 80 | } |
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