<?xml version="1.0" encoding="utf-8"?>
<!--
 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) 2009  - DIGITEO - Antoine ELIAS
 *
 * Copyright (C) 2012 - 2016 - Scilab Enterprises
 *
 * This file is hereby licensed under the terms of the GNU GPL v2.0,
 * pursuant to article 5.3.4 of the CeCILL v.2.1.
 * This file was originally licensed under the terms of the CeCILL v2.1,
 * and continues to be available under such terms.
 * For more information, see the COPYING file which you should have received
 * along with this program.
 *
 -->
<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:ns5="http://www.w3.org/1999/xhtml" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:id="list_pointer_writing_API" xml:lang="en">
    <refnamediv>
        <refname>Pointer writing (Scilab gateway)</refname>
        <refpurpose>
            How to add pointer in a list.
        </refpurpose>
    </refnamediv>
    <refsynopsisdiv>
        <title>Syntax</title>
        <para>Input argument profile:</para>
        <synopsis>SciErr createPointerInList(void* _pvCtx, int _iVar, int* _piParent, int _iItemPos, void* _pvPtr)</synopsis>
        <para>Named variable profile:</para>
        <synopsis>SciErr createPointerInNamedList(void* _pvCtx, const char* _pstName, int* _piParent, int _iItemPos, void* _pvPtr)</synopsis>
    </refsynopsisdiv>
    <refsection>
        <title>Arguments</title>
        <variablelist>
            <varlistentry>
                <term>_pvCtx</term>
                <listitem>
                    <para>
                        Scilab environment pointer, pass in "pvApiCtx" provided by api_scilab.h.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>_iVar</term>
                <listitem>
                    <para>
                        Position in the Scilab memory where you want to put the variable.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>_pstName</term>
                <listitem>
                    <para>
                        Name of the variable for "named" functions.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>_piParent</term>
                <listitem>
                    <para>
                        Address of the parent of the new item.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>_iItemPos</term>
                <listitem>
                    <para>
                        Position of the new item in the list.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>_pvPtr</term>
                <listitem>
                    <para>
                        Address of the pointer.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>SciErr</term>
                <listitem>
                    <para>
                        Error structure where is stored errors messages history and first error number.
                    </para>
                </listitem>
            </varlistentry>
        </variablelist>
    </refsection>
    <refsection>
        <title>Description</title>
        <para>This help describes how to add pointer in a list.</para>
    </refsection>
    <refsection>
        <!--File_gateway: SCI/modules/api_scilab/tests/unit_tests/list_createlist_api.c-->
        <!--File_scilab: SCI/modules/api_scilab/tests/unit_tests/list_createlist_api.tst-->
        <!--Lib_name: list_createlist-->
        <!--Func_list: list_createlist-->
        <title>Gateway Source</title>
        <programlisting role="code_gateway"><![CDATA[
#include "api_scilab.h"
int list_createlist(char *fname,void* pvApiCtx)
{
	SciErr sciErr;
	int *piAddr             = NULL;
	int* piChild            = NULL;
	double pdblData1[]      = {1,3,5,2,4,6};
	double pdblData2[]      = {6,4,2,5,3,1};
	char *pstData[]         = {"may","be","the","with","puffin","you"};
	short psData[]          = {1,4,2,5,3,6};
	double pdblPoly1[]      = {1};
	double pdblPoly2[]      = {-2,-1};
	double pdblPoly3[]      = {1,2,3};
	double pdblPoly4[]      = {-4,-3,-2,-1};
	double pdblPoly5[]      = {1,2,3,4,5};
	double pdblPoly6[]      = {-6,-5,-4,-3,-2,-1};
	double *pdblPoly[]      = {pdblPoly1, pdblPoly3, pdblPoly5, pdblPoly2, pdblPoly4, pdblPoly6};
	int piCoef[]            = {1,3,5,2,4,6};
	int piNbItemRow[]       = {1,2,1};
	int piColPos[]          = {8,4,7,2};
	double pdblSReal[]      = {1,2,3,4};
	double pdblSImg[]       = {4,3,2,1};
	int piBool[]            = {1,0,1,0,1,0,1,0,1};
	double* pdblDataPtr     = NULL;

	sciErr = createList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, 8, &piAddr);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	sciErr = createComplexMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piAddr, 1, 3, 2, pdblData1, pdblData2);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	sciErr = createMatrixOfStringInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piAddr, 2, 2, 3, pstData);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	sciErr = createMatrixOfInteger16InList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piAddr, 3, 2, 3, psData);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	sciErr = createMatrixOfPolyInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piAddr, 4, "x", 3, 2, piCoef, pdblPoly);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}
	sciErr = createComplexSparseMatrixInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piAddr, 5, 3, 10, 4, piNbItemRow, piColPos, pdblSReal, pdblSImg);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	sciErr = createMatrixOfBooleanInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piAddr, 6, 3, 3, piBool);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}
	sciErr = createBooleanSparseMatrixInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piAddr, 7, 3, 10, 4, piNbItemRow, piColPos);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	//add list in list
	sciErr = createListInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piAddr, 8, 3, &piChild);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	sciErr = createMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piChild, 1, 3, 2, pdblData1);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	sciErr = createSparseMatrixInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piChild, 2, 3, 10, 4, piNbItemRow, piColPos, pdblSReal);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	pdblDataPtr     = (double*)malloc(sizeof(double) * 4);
	pdblDataPtr[0]  = 1;
	pdblDataPtr[1]  = 2;
	pdblDataPtr[2]  = 3;
	pdblDataPtr[3]  = 4;

	sciErr = createPointerInList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, piChild, 3, pdblDataPtr);
	if(sciErr.iErr)
	{
		printError(&sciErr, 0);
		return 0;
	}

	AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
	return 0;
}
 ]]></programlisting>
    </refsection>
    <refsection>
        <title>Scilab test script</title>
        <programlisting role="code_scilab"><![CDATA[
size_ref    = 8;
type_ref    = ["constant","string","int16","polynomial", "sparse", "boolean", "boolean sparse", "list"];
dim_ref     = list([3,2],[2,3],[2,3],[3,2],[3,10],[3,3],[3,10],3);

l = list_createlist();
if size(l) <> size_ref then error("failed"), end
for i = 1 : size_ref
    if typeof(l(i)) <> type_ref(i) then error("failed"), end
    if size(l(i)) <> dim_ref(i) then error("failed"), end
end
 ]]></programlisting>
    </refsection>
</refentry>
