#include <string.h>

int fmemcmp (
  const void far *buf1,   /* first buffer */
  const void far *buf2,   /* second buffer */
  unsigned int len);      /* bytes to compare */

The fmemcmp function compares the first len bytes from buf1 and buf2 and returns a value indicating their relationship as follows:

Note

• This function uses far pointers to objects and may be used in any memory model other than Tiny Model.

The fmemcmp function returns a positive, negative, or zero value indicating the relationship of buf1 and buf2.

fmemccpy, fmemchr, fmemcpy, fmemmove, fmemset, hmemcmp, memcmp, xmemcmp

#include <string.h>
#include <stdio.h> /* for printf */

void tst_memcmp (
  char far *buf1,
  char far *buf2,
  unsigned int len)
{
char i;

  i = fmemcmp (buf1, buf2, len);

  if (i < 0)
    printf ("buf1 < buf2\n");
  else if (i > 0)
    printf ("buf1 > buf2\n");
  else
    printf ("buf1 == buf2\n");
}