MirOS Manual: strlen(3), strnlen(3)

STRLEN(3)                  BSD Programmer's Manual                   STRLEN(3)

NAME

     strlen, strnlen - find length of a string

SYNOPSIS

     #include <string.h>

     size_t
     strlen(const char *s);

     size_t
     strnlen(const char *s, size_t maxlen);

DESCRIPTION

     The strlen() function computes the length of the string s.

     The strnlen() function computes the length of the string s, up to maxlen
     characters. The strnlen() function will never attempt to address more
     than maxlen characters, making it suitable for use with character arrays
     that are not guaranteed to be NUL-terminated.

RETURN VALUES

     The strlen() function returns the number of characters that precede the
     terminating NUL character.

     The strnlen() function returns the number of characters that precede the
     terminating NUL or maxlen, whichever is smaller.

SEE ALSO

     string(3), wcslen(3)

STANDARDS

     The strlen() function conforms to ANSI X3.159-1989 ("ANSI C").

     The strlen() and strnlen() functions conform to IEEE Std 1003.1-2008
     ("POSIX").

HISTORY

     The strlen() function first appeared in the Programmer's Workbench
     (PWB/UNIX) and was ported to Version 7 AT&T UNIX. The strnlen() function
     appeared in glibc 2.0 and was reimplemented for OpenBSD 4.8.

MirOS BSD #10-current         November 30, 2014                              1

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