ack/lang/cem/libcc.ansi/core/string/strncpy.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

27 lines
474 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>
char* strncpy(char* ret, register const char* s2, register size_t n)
{
register char* s1 = ret;
if (n > 0)
{
while ((*s1++ = *s2++) && --n > 0)
/* EMPTY */;
if ((*--s2 == '\0') && --n > 0)
{
do
{
*s1++ = '\0';
} while (--n > 0);
}
}
return ret;
}