?? memmove.c
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/* memmove.c - memory move file for string *//* Copyright 1992-1993 Wind River Systems, Inc. *//*modification history--------------------01c,25feb93,jdi documentation cleanup for 5.1.01b,20sep92,smb documentation additions01a,08jul92,smb written and documented.*//*DESCRIPTIONINCLUDE FILES: string.hSEE ALSO: American National Standard X3.159-1989NOMANUAL*/#include "vxWorks.h"#include "string.h"/********************************************************************************* memmove - copy memory from one location to another (ANSI)** This routine copies <size> characters from the memory location <source> to* the location <destination>. It ensures that the memory is not corrupted* even if <source> and <destination> overlap.** INCLUDE FILES: string.h** RETURNS: A pointer to <destination>.*/void * memmove ( void * destination, /* destination of copy */ const void * source, /* source of copy */ size_t size /* size of memory to copy */ ) { char * dest; const char *src; dest = destination; src = source; if ((src < dest) && (dest < (src + size))) { for (dest += size, src += size; size > 0; --size) *--dest = *--src; } else { while (size > 0) { size--; *dest++ = *src++; } } return (destination); }
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