| strlen.3 (165903) | strlen.3 (189136) |
|---|---|
| 1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Chris Torek and the American National Standards Committee X3, 6.\" on Information Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)strlen.3 8.1 (Berkeley) 6/4/93 | 1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Chris Torek and the American National Standards Committee X3, 6.\" on Information Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)strlen.3 8.1 (Berkeley) 6/4/93 |
| 33.\" $FreeBSD: head/lib/libc/string/strlen.3 165903 2007-01-09 00:28:16Z imp $ | 33.\" $FreeBSD: head/lib/libc/string/strlen.3 189136 2009-02-28 06:00:58Z das $ |
| 34.\" | 34.\" |
| 35.Dd June 4, 1993 | 35.Dd February 28, 2009 |
| 36.Dt STRLEN 3 37.Os 38.Sh NAME | 36.Dt STRLEN 3 37.Os 38.Sh NAME |
| 39.Nm strlen | 39.Nm strlen, strnlen |
| 40.Nd find length of string 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In string.h 45.Ft size_t 46.Fn strlen "const char *s" | 40.Nd find length of string 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In string.h 45.Ft size_t 46.Fn strlen "const char *s" |
| 47.Ft size_t 48.Fn strnlen "const char *s" "size_t maxlen" |
|
| 47.Sh DESCRIPTION 48The 49.Fn strlen 50function 51computes the length of the string 52.Fa s . | 49.Sh DESCRIPTION 50The 51.Fn strlen 52function 53computes the length of the string 54.Fa s . |
| 55The 56.Fn strnlen 57function attempts to compute the length of 58.Fa s , 59but never scans beyond the first 60.Fa maxlen 61bytes of 62.Fa s . |
|
| 53.Sh RETURN VALUES 54The 55.Fn strlen 56function 57returns 58the number of characters that precede the 59terminating 60.Dv NUL 61character. | 63.Sh RETURN VALUES 64The 65.Fn strlen 66function 67returns 68the number of characters that precede the 69terminating 70.Dv NUL 71character. |
| 72The 73.Fn strnlen 74function returns either the same result as 75.Fn strlen 76or 77.Fa maxlen , 78whichever is smaller. |
|
| 62.Sh SEE ALSO 63.Xr string 3 64.Sh STANDARDS 65The 66.Fn strlen 67function 68conforms to 69.St -isoC . | 79.Sh SEE ALSO 80.Xr string 3 81.Sh STANDARDS 82The 83.Fn strlen 84function 85conforms to 86.St -isoC . |
| 87The 88.Fn strnlen 89function conforms to 90.St -p1003.1-2008 . |
|