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strncpy.c
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1991-05-15
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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* HISTORY
* $Log: strncpy.c,v $
* Revision 2.3 91/05/14 17:55:39 mrt
* Correcting copyright
*
* Revision 2.2 91/02/14 14:19:07 mrt
* Added new Mach copyright
* [91/02/13 12:45:18 mrt]
*
*/
/*
* 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);
}