.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\" 386BSD man pages
.\" Modified Sat Jul 24 18:02:26 1993 by Rik Faith (faith@cs.unc.edu)
-.TH STRLEN 3 2012-05-04 "GNU" "Linux Programmer's Manual"
+.TH STRLEN 3 2014-02-25 "GNU" "Linux Programmer's Manual"
.SH NAME
strlen \- calculate the length of a string
.SH SYNOPSIS
The
.BR strlen ()
function calculates the length of the string
-\fIs\fP, excluding the terminating null byte (\(aq\\0\(aq).
+.IR s ,
+excluding the terminating null byte (\(aq\\0\(aq).
.SH RETURN VALUE
The
.BR strlen ()
-function returns the number of bytes in the string \fIs\fP.
+function returns the number of bytes in the string
+.IR s .
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR strlen ()
+function is thread-safe.
.SH CONFORMING TO
SVr4, 4.3BSD, C89, C99.
.SH SEE ALSO
.BR strnlen (3),
.BR wcslen (3),
.BR wcsnlen (3)
+.SH COLOPHON
+This page is part of release 3.79 of the Linux
+.I man-pages
+project.
+A description of the project,
+information about reporting bugs,
+and the latest version of this page,
+can be found at
+\%http://www.kernel.org/doc/man\-pages/.