Integer reading (Scilab gateway)

void* create_output(int _iCoeff, int _iSize, int _iRows, int _iCols, void* _pvDataIn);

int read_integer(char *fname,unsigned long fname_len)
{
    SciErr sciErr;
    //output variable info
    int iRows8                    = 0;
    int iCols8                    = 0;
    int iRows16                    = 0;
    int iCols16                    = 0;
    int iRows32                    = 0;
    int iCols32                    = 0;
    int iRowsu8                    = 0;
    int iColsu8                    = 0;
    int iRowsu16                = 0;
    int iColsu16                = 0;
    int iRowsu32                = 0;
    int iColsu32                = 0;
    int iPrec                    = 0;

    int* piAddr8                = NULL;
    int* piAddr16                = NULL;
    int* piAddr32                = NULL;
    int* piAddru8                = NULL;
    int* piAddru16                = NULL;
    int* piAddru32                = NULL;

    char* pcData                = NULL;
    short* psData                = NULL;
    int* piData                    = NULL;
    unsigned char* pucData        = NULL;
    unsigned short* pusData        = NULL;
    unsigned int* puiData        = NULL;

    char* pcDataOut                = NULL;
    short* psDataOut            = NULL;
    int* piDataOut                = NULL;
    unsigned char* pucDataOut    = NULL;
    unsigned short* pusDataOut    = NULL;
    unsigned int* puiDataOut    = NULL;

    //check input/ouput arguments count
    CheckRhs(6,6);
    CheckLhs(6,6);

    //get varialbe address
    sciErr = getVarAddressFromPosition(pvApiCtx, 1, &piAddr8);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    sciErr = getVarAddressFromPosition(pvApiCtx, 2, &piAddru8);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    sciErr = getVarAddressFromPosition(pvApiCtx, 3, &piAddr16);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    sciErr = getVarAddressFromPosition(pvApiCtx, 4, &piAddru16);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    sciErr = getVarAddressFromPosition(pvApiCtx, 5, &piAddr32);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    sciErr = getVarAddressFromPosition(pvApiCtx, 6, &piAddru32);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //check variable precision
    sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddr8, &iPrec);
    if(sciErr.iErr || iPrec != SCI_INT8)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //check variable precision
    sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddru8, &iPrec);
    if(sciErr.iErr || iPrec != SCI_UINT8)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //check variable precision
    sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddr16, &iPrec);
    if(sciErr.iErr || iPrec != SCI_INT16)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //check variable precision
    sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddru16, &iPrec);
    if(sciErr.iErr || iPrec != SCI_UINT16)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //check variable precision
    sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddr32, &iPrec);
    if(sciErr.iErr || iPrec != SCI_INT32)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //check variable precision
    sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddru32, &iPrec);
    if(sciErr.iErr || iPrec != SCI_UINT32)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //retrieve dimensions and data
    sciErr = getMatrixOfInteger8(pvApiCtx, piAddr8, &iRows8, &iCols8, &pcData);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //retrieve dimensions and data
    sciErr = getMatrixOfUnsignedInteger8(pvApiCtx, piAddru8, &iRowsu8, &iColsu8, &pucData);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //retrieve dimensions and data
    sciErr = getMatrixOfInteger16(pvApiCtx, piAddr16, &iRows16, &iCols16, &psData);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //retrieve dimensions and data
    sciErr = getMatrixOfUnsignedInteger16(pvApiCtx, piAddru16, &iRowsu16, &iColsu16, &pusData);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //retrieve dimensions and data
    sciErr = getMatrixOfInteger32(pvApiCtx, piAddr32, &iRows32, &iCols32, &piData);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //retrieve dimensions and data
    sciErr = getMatrixOfUnsignedInteger32(pvApiCtx, piAddru32, &iRowsu32, &iColsu32, &puiData);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //alloc and fill new variable
    pcDataOut   = (char*)create_output(2, 1, iRows8, iCols8, (void*)pcData);
    pucDataOut  = (unsigned char*)create_output(4, 1, iRowsu8, iColsu8, (void*)pucData);
    psDataOut   = (short*)create_output(8, 2, iRows16, iCols16, (void*)psData);
    pusDataOut  = (unsigned short*)create_output(16, 2, iRowsu16, iColsu16, (void*)pusData);
    piDataOut   = (int*)create_output(32, 4, iRows32, iCols32, (void*)piData);
    puiDataOut  = (unsigned int*)create_output(64, 4, iRowsu32, iColsu32, (void*)puiData);

    //create new variable
    sciErr = createMatrixOfInteger8(pvApiCtx, Rhs + 1, iRows8, iCols8, pcDataOut);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //create new variable
    sciErr = createMatrixOfUnsignedInteger8(pvApiCtx, Rhs + 2, iRowsu8, iColsu8, pucDataOut);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //create new variable
    sciErr = createMatrixOfInteger16(pvApiCtx, Rhs + 3, iRows16, iCols16, psDataOut);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //create new variable
    sciErr = createMatrixOfUnsignedInteger16(pvApiCtx, Rhs + 4, iRowsu16, iColsu16, pusDataOut);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //create new variable
    sciErr = createMatrixOfInteger32(pvApiCtx, Rhs + 5, iRows32, iCols32, piDataOut);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //create new variable
    sciErr = createMatrixOfUnsignedInteger32(pvApiCtx, Rhs + 6, iRowsu32, iColsu32, puiDataOut);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    //assign allocated variables to Lhs position
    LhsVar(1) = Rhs + 1;
    LhsVar(2) = Rhs + 2;
    LhsVar(3) = Rhs + 3;
    LhsVar(4) = Rhs + 4;
    LhsVar(5) = Rhs + 5;
    LhsVar(6) = Rhs + 6;
    return 0;
}

void* create_output(int _iCoeff, int _iSize, int _iRows, int _iCols, void* _pvDataIn)
{
    int i = 0;
    void* pvDataOut = (void*)malloc(_iSize * _iRows * _iCols);
    for(i = 0 ; i < _iRows * _iCols ; i++)
    {
        int iVal = 0;
        memcpy(&iVal, (char*)_pvDataIn + i * _iSize, _iSize);
        iVal *= _iCoeff;
        memcpy((char*)pvDataOut + i * _iSize, &iVal, _iSize);
    }
    return pvDataOut;
}

a8  = int8([    1   -2  3   -4  5; ..
                -6  7   -8  9   -10; ..
                11  -12 13  -14 15]);

au8 = uint8([   1   2   3   4   5; ..
                6   7   8   9   10; ..
                11  12  13  14  15]);

a16  = int16([  1   -2  3   -4  5; ..
                -6  7   -8  9   -10; ..
                11  -12 13  -14 15]);

au16 = uint16([ 1   2   3   4   5; ..
                6   7   8   9   10; ..
                11  12  13  14  15]);

a32 = int32([   1   -2  3   -4  5; ..
                -6  7   -8  9   -10; ..
                11  -12 13  -14 15]);

au32 = uint32([ 1   2   3   4   5; ..
                6   7   8   9   10; ..
                11  12  13  14  15]);

[c8, cu8, c16, cu16, c32, cu32] = read_integer(a8, au8, a16, au16, a32, au32);

if or(c8 <> a8 * 2) then error("failed"), end
if or(cu8 <> au8 * 4) then error("failed"), end
if or(c16 <> a16 * 8) then error("failed"), end
if or(cu16 <> au16 * 16) then error("failed"), end
if or(c32 <> a32 * 32) then error("failed"), end
if or(cu32 <> au32 * 64) then error("failed"), end