| 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,result] = rpUnitsConvertObjDbl(fromObjHandle, toObjHandle, value) |
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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] = rpUnitsConvertObjDbl(fromObjHandle,toObjHandle,value) |
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| 20 | /// Convert between RpUnits return a double value without units |
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| 21 | /** |
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| 22 | * Convert @var{value} from the units represented by the RpUnits object |
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| 23 | * @var{fromObjHandle} to the units represented by the RpUnits object |
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| 24 | * @var{toObjHandle}. On success, the converted value is returned through |
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| 25 | * @var{retVal}. The second return value, @var{err}, specifies whether` |
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| 26 | * there was an error during conversion. |
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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 result = 0; |
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| 34 | double retVal = 0; |
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| 35 | int fromObjHandle = 0; |
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| 36 | int toObjHandle = 0; |
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| 37 | const RpUnits* fromObj = NULL; |
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| 38 | const RpUnits* toObj = NULL; |
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| 39 | double value = 0; |
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| 40 | |
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| 41 | /* Check for proper number of arguments. */ |
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| 42 | if (nrhs != 3) |
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| 43 | mexErrMsgTxt("Two input required."); |
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| 44 | else if (nlhs > 2) |
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| 45 | mexErrMsgTxt("Too many output arguments."); |
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| 46 | |
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| 47 | fromObjHandle = getIntInput(prhs[0]); |
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| 48 | toObjHandle = getIntInput(prhs[1]); |
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| 49 | value = getDoubleInput(prhs[2]); |
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| 50 | |
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| 51 | // grab the RpUnits objects from the dictionary |
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| 52 | if ( (fromObjHandle > 0) && (toObjHandle > 0) ){ |
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| 53 | fromObj = getObject_UnitsStr(fromObjHandle); |
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| 54 | toObj = getObject_UnitsStr(toObjHandle); |
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| 55 | |
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| 56 | /* Call the C subroutine. */ |
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| 57 | if (fromObj && toObj) { |
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| 58 | retVal = fromObj->convert(toObj,value,&result); |
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| 59 | } |
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| 60 | } |
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| 61 | |
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| 62 | /* Set C-style string output_buf to MATLAB mexFunction output*/ |
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| 63 | plhs[0] = mxCreateDoubleScalar(retVal); |
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| 64 | plhs[1] = mxCreateDoubleScalar((double)result); |
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| 65 | |
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| 66 | return; |
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| 67 | } |
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