runtime/Intrinsic/memmove.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

//===-- memmove.c ---------------------------------------------------------===//
//
//                     The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include <stdlib.h>

void *memmove(void *dst, const void *src, size_t count) {
  char *a = dst;
  const char *b = src;

  if (src == dst)
    return dst;

  if (src>dst) {
    while (count--) *a++ = *b++;
  } else {
    a+=count-1;
    b+=count-1;
    while (count--) *a-- = *b--;
  }

  return dst;
}