view target-utils/libc/strncpy.c @ 425:7eddc2578fdb

fcup-atinterf: added 20 ms serial flush
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 28 Oct 2018 20:03:06 +0000
parents 7fb62fc724dc
children
line wrap: on
line source

/*
 * Copy s2 to s1, truncating or null-padding to always copy n bytes
 * return s1
 */

char *
strncpy(s1, s2, n)
	register char *s1, *s2;
{
	register i;
	register char *os1;

	os1 = s1;
	for (i = 0; i < n; i++)
		if ((*s1++ = *s2++) == '\0') {
			while (++i < n)
				*s1++ = '\0';
			return(os1);
		}
	return(os1);
}