mirror of https://github.com/mkerrisk/man-pages
63 lines
2.0 KiB
Plaintext
63 lines
2.0 KiB
Plaintext
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
|
|
.TH "STRNCMP" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
|
|
.\" strncmp
|
|
.SH NAME
|
|
strncmp \- compare part of two strings
|
|
.SH SYNOPSIS
|
|
.LP
|
|
\fB#include <string.h>
|
|
.br
|
|
.sp
|
|
int strncmp(const char *\fP\fIs1\fP\fB, const char *\fP\fIs2\fP\fB,
|
|
size_t\fP \fIn\fP\fB);
|
|
.br
|
|
\fP
|
|
.SH DESCRIPTION
|
|
.LP
|
|
The \fIstrncmp\fP() function shall compare not more than \fIn\fP bytes
|
|
(bytes that follow a null byte are not compared) from
|
|
the array pointed to by \fIs1\fP to the array pointed to by \fIs2\fP.
|
|
.LP
|
|
The sign of a non-zero return value is determined by the sign of the
|
|
difference between the values of the first pair of bytes
|
|
(both interpreted as type \fBunsigned char\fP) that differ in the
|
|
strings being compared.
|
|
.SH RETURN VALUE
|
|
.LP
|
|
Upon successful completion, \fIstrncmp\fP() shall return an integer
|
|
greater than, equal to, or less than 0, if the possibly
|
|
null-terminated array pointed to by \fIs1\fP is greater than, equal
|
|
to, or less than the possibly null-terminated array pointed to
|
|
by \fIs2\fP respectively.
|
|
.SH ERRORS
|
|
.LP
|
|
No errors are defined.
|
|
.LP
|
|
\fIThe following sections are informative.\fP
|
|
.SH EXAMPLES
|
|
.LP
|
|
None.
|
|
.SH APPLICATION USAGE
|
|
.LP
|
|
None.
|
|
.SH RATIONALE
|
|
.LP
|
|
None.
|
|
.SH FUTURE DIRECTIONS
|
|
.LP
|
|
None.
|
|
.SH SEE ALSO
|
|
.LP
|
|
\fIstrcmp\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
|
|
\fI<string.h>\fP
|
|
.SH COPYRIGHT
|
|
Portions of this text are reprinted and reproduced in electronic form
|
|
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
|
|
-- Portable Operating System Interface (POSIX), The Open Group Base
|
|
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
|
|
Electrical and Electronics Engineers, Inc and The Open Group. In the
|
|
event of any discrepancy between this version and the original IEEE and
|
|
The Open Group Standard, the original IEEE and The Open Group Standard
|
|
is the referee document. The original Standard can be obtained online at
|
|
http://www.opengroup.org/unix/online.html .
|