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_memmove 274887Schin 284887Schin NoN(memmove) 294887Schin 304887Schin #else 314887Schin 324887Schin void* 334887Schin memmove(void* to, const void* from, register size_t n) 344887Schin { 354887Schin register char* out = (char*)to; 364887Schin register char* in = (char*)from; 374887Schin 384887Schin if (n <= 0) /* works if size_t is signed or not */ 394887Schin ; 404887Schin else if (in + n <= out || out + n <= in) 414887Schin return(memcpy(to, from, n)); /* hope it's fast*/ 424887Schin else if (out < in) 434887Schin do *out++ = *in++; while (--n > 0); 444887Schin else 454887Schin { 464887Schin out += n; 474887Schin in += n; 484887Schin do *--out = *--in; while(--n > 0); 494887Schin } 504887Schin return(to); 514887Schin } 524887Schin 534887Schin #endif 54