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Diffstat (limited to 'man3/strlen.3')
| -rw-r--r-- | man3/strlen.3 | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/man3/strlen.3 b/man3/strlen.3 new file mode 100644 index 0000000..c5820ba --- /dev/null +++ b/man3/strlen.3 @@ -0,0 +1,62 @@ +'\" t +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" References consulted: +.\" Linux libc source code +.\" 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 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +strlen \- calculate the length of a string +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <string.h> +.PP +.BI "size_t strlen(const char *" s ); +.fi +.SH DESCRIPTION +The +.BR strlen () +function calculates the length of the string pointed to by +.IR s , +excluding the terminating null byte (\[aq]\e0\[aq]). +.SH RETURN VALUE +The +.BR strlen () +function returns the number of bytes in the string 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 strlen () +T} Thread safety MT-Safe +.TE +.sp 1 +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +POSIX.1-2001, C89, SVr4, 4.3BSD. +.SH NOTES +In cases where the input buffer may not contain +a terminating null byte, +.BR strnlen (3) +should be used instead. +.SH SEE ALSO +.BR string (3), +.BR strnlen (3), +.BR wcslen (3), +.BR wcsnlen (3) |