ack/lang/cem/libcc.ansi/core/string/memcmp.c
David Given d1cdb07719 Realise that the libc core can safely call other libc core functions, even if
they're not defined in the core: so putw() can call stdio stuff, for example.
So the earlier concept of pureness isn't necessary. Rename accordingly.
2018-06-21 23:24:23 +02:00

25 lines
425 B
C

/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* $Id$ */
#include <string.h>
int memcmp(const void* s1, const void* s2, size_t n)
{
register const unsigned char *p1 = s1, *p2 = s2;
if (n)
{
n++;
while (--n > 0)
{
if (*p1++ == *p2++)
continue;
return *--p1 - *--p2;
}
}
return 0;
}