mirror of https://github.com/mkerrisk/man-pages
87 lines
2.5 KiB
Groff
87 lines
2.5 KiB
Groff
.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
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.\"
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.\" %%%LICENSE_START(VERBATIM)
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\" %%%LICENSE_END
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.\"
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.\" References consulted:
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.\" Linux libc source code
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.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
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.\" 386BSD man pages
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.\" Modified Sat Jul 24 18:12:45 1993 by Rik Faith (faith@cs.unc.edu)
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.TH STRCASECMP 3 2012-05-10 "" "Linux Programmer's Manual"
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.SH NAME
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strcasecmp, strncasecmp \- compare two strings ignoring case
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.SH SYNOPSIS
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.nf
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.B #include <strings.h>
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.sp
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.BI "int strcasecmp(const char *" s1 ", const char *" s2 );
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.sp
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.BI "int strncasecmp(const char *" s1 ", const char *" s2 ", size_t " n );
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.fi
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.SH DESCRIPTION
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The
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.BR strcasecmp ()
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function compares the two strings
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.I s1
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and
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.IR s2 ,
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ignoring the case of the characters.
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It returns an integer
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less than, equal to, or greater than zero if
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.I s1
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is found,
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respectively, to be less than, to match, or be greater than
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.IR s2 .
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.PP
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The
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.BR strncasecmp ()
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function is similar, except it compares
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the only first
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.I n
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bytes of
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.IR s1 .
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.SH RETURN VALUE
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The
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.BR strcasecmp ()
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and
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.BR strncasecmp ()
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functions return
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an integer less than, equal to, or greater than zero if
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.I s1
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(or the first
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.I n
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bytes thereof) is found, respectively, to be
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less than, to match, or be greater than
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.IR s2 .
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.SH CONFORMING TO
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4.4BSD, POSIX.1-2001.
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.SH SEE ALSO
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.BR bcmp (3),
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.BR memcmp (3),
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.BR strcmp (3),
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.BR strcoll (3),
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.BR string (3),
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.BR strncmp (3),
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.BR wcscasecmp (3),
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.BR wcsncasecmp (3)
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