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-'\" t
-.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
-.\"
-.\" SPDX-License-Identifier: GPL-2.0-or-later
-.\"
-.\" References consulted:
-.\" GNU glibc-2 source code and manual
-.\"
-.TH strnlen 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-strnlen \- determine the length of a fixed-size string
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <string.h>
-.P
-.BI "size_t strnlen(const char " s [. maxlen "], size_t " maxlen );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR strnlen ():
-.nf
- Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
- Before glibc 2.10:
- _GNU_SOURCE
-.fi
-.SH DESCRIPTION
-The
-.BR strnlen ()
-function returns the number of bytes in the string
-pointed to by
-.IR s ,
-excluding the terminating null byte (\[aq]\e0\[aq]),
-but at most
-.IR maxlen .
-In doing this,
-.BR strnlen ()
-looks only at the first
-.I maxlen
-characters in the string pointed to by
-.I s
-and never beyond
-.IR s[maxlen\-1] .
-.SH RETURN VALUE
-The
-.BR strnlen ()
-function returns
-.IR strlen(s) ,
-if that is less than
-.IR maxlen ,
-or
-.I maxlen
-if there is no null terminating (\[aq]\e0\[aq]) among the first
-.I maxlen
-characters pointed to by
-.IR s .
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR strnlen ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-POSIX.1-2008.
-.SH SEE ALSO
-.BR strlen (3)