ReturnArguments

A C gateway function which returns the various variables.

Calling Sequence

ReturnArguments();

Description

ReturnArguments() will return the various variables declared through AssignOutputVariable(X).

Examples

This example takes a matrix of doubles as input and returns:

• the number of lines (first output argument)
• the number of rows (second output argument)

#include "api_scilab.h"
`int`_ sci_mysizedouble(char * fname, unsigned long fname_len)
{
    SciErr      sciErr;
    `int`_         m_in_row;
    `int`_         n_in_col;
    `int`_*        piAddr = NULL;
    `double`_*     pdblData = NULL;

    sciErr = getVarAddressFromPosition(pvApiCtx, 1, &piAddr);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    /* `get`_ dimensions */
    sciErr = getMatrixOfDouble(pvApiCtx, piAddr, &m_in_row, &n_in_col, &pdblData);
    if(sciErr.iErr)
    {
        printError(&sciErr, 0);
        return 0;
    }

    sciErr = createMatrixOfInteger32(pvApiCtx, nbInputArgument + 1, 1, 1, &m_in_row); // the m_in_row parameter handles the number of lines of the matrix sent as argument
    sciErr = createMatrixOfInteger32(pvApiCtx, nbInputArgument + 2, 1, 1, &m_in_row); // store a same value, but will neither be used nor returned to Scilab
    sciErr = createMatrixOfInteger32(pvApiCtx, nbInputArgument + 3, 1, 1, &n_in_col); // the n_in_col parameter handles the number of columns of the matrix sent as argument

    AssignOutputVariable(1) = nbInputArgument + 1; // We set the parameter "nbInputArgument + 1" as an output argument
    AssignOutputVariable(2) = nbInputArgument + 3; // We set the parameter "nbInputArgument + 3" as an output argument
    ReturnArguments();
    return 0;
}