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* \brief GIS Library - Memory copy functions.
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* (C) 2001-2008 by the GRASS Development Team
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* This program is free software under the GNU General Public License
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* (>=v2). Read the file COPYING that comes with GRASS for details.
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* \author GRASS GIS Development Team
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#include <grass/gis.h>
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* \brief Copies <b>n</b> bytes starting at address <b>b</b> into
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* \param[out] a destination (to)
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* \param[in] b source (from)
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* \param[in] n number of bytes to copy
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* \return always returns 0
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int G_copy(void *a, const void *b, int n)