@node bcmp, memory
@findex bcmp
@subheading Syntax

@example
#include <string.h>

int bcmp(const void *ptr1, const void *ptr2, int length);
@end example

@subheading Description

Compare memory pointed to by @var{ptr1} and @var{ptr2} for at most
@var{length} bytes. 

@subheading Return Value

The number of bytes remaining when the first mismatch occurred, or zero
if all bytes were equal. 

@subheading Portability

@portability !ansi, !posix

@subheading Example

@example
void f(char *s1, char *s2)
@{
  int l = bcmp(s1, s2, strlen(s1));
  printf("Difference: %s, %s\n", s1+strlen(s1)-l, s2+strlen(s1)-l);
@}

@end example