| 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 | * [retVal,err] = rpLibGetDouble(libHandle,path) |
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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: [retVal,err] = rpLibGetDouble(libHandle,path) |
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| 20 | /// Query the value of a node. |
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| 21 | /** |
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| 22 | * Clients use this to query the value of a node. If the path |
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| 23 | * is not specified, it returns the value associated with the |
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| 24 | * root node. Otherwise, it returns the value for the element |
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| 25 | * specified by the path. The return value is returned as a double. |
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| 26 | * |
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| 27 | * Error code, err=0 on success, anything else is failure. |
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| 28 | */ |
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| 29 | |
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| 30 | void mexFunction(int nlhs, mxArray *plhs[], |
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| 31 | int nrhs, const mxArray *prhs[]) |
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| 32 | { |
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| 33 | int libIndex = 0; |
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| 34 | int retLibIndex = 0; |
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| 35 | int err = 1; |
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| 36 | RpLibrary* lib = NULL; |
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| 37 | std::string path = ""; |
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| 38 | double retVal = 0.0; |
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| 39 | |
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| 40 | /* Check for proper number of arguments. */ |
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| 41 | if (nrhs != 2) { |
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| 42 | mexErrMsgTxt("Two input required."); |
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| 43 | } |
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| 44 | |
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| 45 | libIndex = getIntInput(prhs[0]); |
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| 46 | path = getStringInput(prhs[1]); |
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| 47 | |
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| 48 | /* Call the C subroutine. */ |
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| 49 | if ( (libIndex > 0) && (!path.empty()) ) { |
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| 50 | lib = (RpLibrary*) getObject_Void(libIndex); |
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| 51 | |
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| 52 | if (lib) { |
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| 53 | retVal = lib->getDouble(path); |
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| 54 | err = 0; |
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| 55 | } |
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| 56 | } |
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| 57 | |
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| 58 | /* Set double scalar to MATLAB mexFunction output*/ |
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| 59 | plhs[0] = mxCreateDoubleScalar(retVal); |
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| 60 | plhs[1] = mxCreateDoubleScalar(err); |
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| 61 | |
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| 62 | return; |
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| 63 | } |
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