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/**
* \file address.c
*
* \brief Address routines.
*
* This program is free software under the GNU General Public License
* (>=v2). Read the file COPYING that comes with GRASS for details.
*
* \author GRASS GIS Development Team
*
* \date 2005-2006
*/
#include <grass/segment.h>
/**
* \fn int segment_address (SEGMENT *SEG, int row, int col, int *n, int *index)
*
* \brief Gets segment address and returns <b>n</b> and <b>index</b>.
*
* \param[in] SEG segment
* \param[in] row
* \param[in] col
* \param[in,out] n
* \param[in,out] index
* \return always returns 0
*/
int segment_address(const SEGMENT * SEG, int row, int col, int *n, int *index)
{
*n = row / SEG->srows * SEG->spr + col / SEG->scols;
*index = (row % SEG->srows * SEG->scols + col % SEG->scols) * SEG->len;
return 0;
}
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