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/usr/include/scilab/api_stack_handle.h is in scilab-include 6.0.1-1ubuntu1.

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/*
 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) 2012 - Scilab Enterprises - 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.
 *
 * Please note that piece of code will be rewrited for the Scilab 6 family
 * However, the API (profile of the functions in the header files) will be
 * still available and supported in Scilab 6.
 */

#ifndef __STACK_HANDLE_API__
#define __STACK_HANDLE_API__

#if !defined(__INTERNAL_API_SCILAB__)
#error Do not include api_stack_handle.h. Include api_scilab.h instead.
#endif
#ifdef __cplusplus
extern "C" {
#endif

/**
 * Get handle variable
 * @param[in] _piAddress variable address
 * @param[out] _piRows return number of rows
 * @param[out] _piCols return number of columns
 * @param[out] _pllHandle return pointer to data
 * @return if the operation succeeded (0) or not ( !0 )
 */
SciErr getMatrixOfHandle(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, long long** _pllHandle);

/**
 * Allocate handle variable
 * @param[in] _iVar variable number
 * @param[in] _iRows number of rows
 * @param[in] _iCols number of columns
 * @param[out] _pllHandle return pointer to data
 * @return if the operation succeeded (0) or not ( !0 )
 */
SciErr allocMatrixOfHandle(void* _pvCtx, int _iVar, int _iRows, int _iCols, long long** _pllHandle);

/**
 * Create handle variable
 * @param[in] _iVar variable number
 * @param[in] _iRows number of rows
 * @param[in] _iCols number of columns
 * @param[in] _pllHandle pointer to data
 * @return if the operation succeeded (0) or not ( !0 )
 */
SciErr createMatrixOfHandle(void* _pvCtx, int _iVar, int _iRows, int _iCols, long long* _pllHandle);

/*shortcut functions*/

/**
 * Check if the variable type is handle
 * @param[in] _piAddress variable address
 * @return 1 for true and 0 for false
 */
int isHandleType(void* _pvCtx, int* _piAddress);

/**
 * Get scalar handle variable data
 * @param[in] _piAddress variable address
 * @param[out] _pllHandle return handle value
 * @return if the operation succeeded (0) or not ( !0 )
 */
int getScalarHandle(void* _pvCtx, int* _piAddress, long long* _pllHandle);

/**
 * Create scalar handle
 * @param[in] _iVar variable number
 * @param[in] _llHandle value
 * @return if the operation succeeded (0) or not ( !0 )
 */
int createScalarHandle(void* _pvCtx, int _iVar, long long _llHandle);

#ifdef __cplusplus
}
#endif
#endif /* !__STACK_HANDLE_API__ */