| 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] = rpUnitsConvertDbl(fromVal, toUnitsName) |
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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) 2004-2012 HUBzero Foundation, LLC |
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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] = rpUnitsConvertDbl(fromVal,toUnitsName) |
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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 the value and units in the string @var{fromVal} to units specified |
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| 23 | * in string @var{toUnitsName}. Units will not be shown in @var{retVal}. |
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| 24 | * The second return value @var{err} specifies whether there was an error |
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| 25 | * during conversion. |
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| 26 | * Error code, err=0 on success, anything else is failure. |
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| 27 | */ |
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| 28 | |
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| 29 | void mexFunction(int nlhs, mxArray *plhs[], |
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| 30 | int nrhs, const mxArray *prhs[]) |
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| 31 | { |
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| 32 | const char* fromVal = NULL; |
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| 33 | const char* toUnitsName = NULL; |
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| 34 | int showUnits = 0; |
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| 35 | int result = 0; |
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| 36 | std::string retStr = ""; |
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| 37 | double retVal = 0; |
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| 38 | |
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| 39 | /* Check for proper number of arguments. */ |
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| 40 | if (nrhs != 2) |
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| 41 | mexErrMsgTxt("Two input required."); |
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| 42 | else if (nlhs > 2) |
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| 43 | mexErrMsgTxt("Too many output arguments."); |
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| 44 | |
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| 45 | fromVal = getStringInput(prhs[0]); |
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| 46 | toUnitsName = getStringInput(prhs[1]); |
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| 47 | |
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| 48 | /* Call the C subroutine. */ |
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| 49 | if (fromVal && toUnitsName) { |
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| 50 | retStr = RpUnits::convert(fromVal,toUnitsName,showUnits,&result); |
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| 51 | |
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| 52 | if ( !retStr.empty() ) { |
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| 53 | retVal = atof(retStr.c_str()); |
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| 54 | } |
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| 55 | } |
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| 56 | |
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| 57 | /* Set C-style string output_buf to MATLAB mexFunction output*/ |
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| 58 | plhs[0] = mxCreateDoubleScalar(retVal); |
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| 59 | plhs[1] = mxCreateDoubleScalar((double)result); |
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| 60 | |
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| 61 | return; |
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| 62 | } |
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