xref: /onnv-gate/usr/src/lib/libast/common/comp/memcpy.c (revision 12068:08a39a083754)
14887Schin /***********************************************************************
24887Schin *                                                                      *
34887Schin *               This software is part of the ast package               *
4*12068SRoger.Faulkner@Oracle.COM *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
54887Schin *                      and is licensed under the                       *
64887Schin *                  Common Public License, Version 1.0                  *
78462SApril.Chin@Sun.COM *                    by AT&T Intellectual Property                     *
84887Schin *                                                                      *
94887Schin *                A copy of the License is available at                 *
104887Schin *            http://www.opensource.org/licenses/cpl1.0.txt             *
114887Schin *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
124887Schin *                                                                      *
134887Schin *              Information and Software Systems Research               *
144887Schin *                            AT&T Research                             *
154887Schin *                           Florham Park NJ                            *
164887Schin *                                                                      *
174887Schin *                 Glenn Fowler <gsf@research.att.com>                  *
184887Schin *                  David Korn <dgk@research.att.com>                   *
194887Schin *                   Phong Vo <kpv@research.att.com>                    *
204887Schin *                                                                      *
214887Schin ***********************************************************************/
224887Schin #pragma prototyped
234887Schin 
244887Schin #include <ast.h>
254887Schin 
264887Schin #if _lib_memcpy
274887Schin 
284887Schin NoN(memcpy)
294887Schin 
304887Schin #else
314887Schin 
324887Schin #undef	memcpy
334887Schin 
344887Schin #if _lib_bcopy
354887Schin 
364887Schin extern void	bcopy(void*, void*, size_t);
374887Schin 
384887Schin void*
394887Schin memcpy(void* s1, void* s2, size_t n)
404887Schin {
414887Schin 	bcopy(s2, s1, n);
424887Schin 	return(s1);
434887Schin }
444887Schin 
454887Schin #else
464887Schin 
474887Schin void*
484887Schin memcpy(void* as1, const void* as2, register size_t n)
494887Schin {
504887Schin 	register char*		s1 = (char*)as1;
514887Schin 	register const char*	s2 = (const char*)as2;
524887Schin 
534887Schin 	while (n-- > 0)
544887Schin 		*s1++ = *s2++;
554887Schin 	return(as1);
564887Schin }
574887Schin 
584887Schin #endif
594887Schin 
604887Schin #endif
61