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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
commit | 3d08cd331c1adcf0d917392f7e527b3f00511748 (patch) | |
tree | 312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man/man3/strcasecmp.3 | |
parent | Adding debian version 6.7-2. (diff) | |
download | manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man/man3/strcasecmp.3')
-rw-r--r-- | man/man3/strcasecmp.3 | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/man/man3/strcasecmp.3 b/man/man3/strcasecmp.3 new file mode 100644 index 0000000..647f211 --- /dev/null +++ b/man/man3/strcasecmp.3 @@ -0,0 +1,112 @@ +'\" 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 18:12:45 1993 by Rik Faith (faith@cs.unc.edu) +.TH strcasecmp 3 2024-05-02 "Linux man-pages (unreleased)" +.SH NAME +strcasecmp, strncasecmp \- compare two strings ignoring case +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <strings.h> +.P +.BI "int strcasecmp(const char *" s1 ", const char *" s2 ); +.BI "int strncasecmp(const char " s1 [. n "], const char " s2 [. n "], \ +size_t " n ); +.fi +.SH DESCRIPTION +The +.BR strcasecmp () +function performs a byte-by-byte comparison of the strings +.I s1 +and +.IR s2 , +ignoring the case of the characters. +It returns an integer +less than, equal to, or greater than zero if +.I s1 +is found, +respectively, to be less than, to match, or be greater than +.IR s2 . +.P +The +.BR strncasecmp () +function is similar, except that it compares +no more than +.I n +bytes of +.I s1 +and +.IR s2 . +.SH RETURN VALUE +The +.BR strcasecmp () +and +.BR strncasecmp () +functions return +an integer less than, equal to, or greater than zero if +.I s1 +is, after ignoring case, found to be +less than, to match, or be greater than +.IR s2 , +respectively. +.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 strcasecmp (), +.BR strncasecmp () +T} Thread safety MT-Safe locale +.TE +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +4.4BSD, POSIX.1-2001. +.P +The +.BR strcasecmp () +and +.BR strncasecmp () +functions first appeared in 4.4BSD, where they were declared in +.IR <string.h> . +Thus, for reasons of historical compatibility, the glibc +.I <string.h> +header file also declares these functions, if the +.B _DEFAULT_SOURCE +(or, in glibc 2.19 and earlier, +.BR _BSD_SOURCE ) +feature test macro is defined. +.P +The POSIX.1-2008 standard says of these functions: +.P +.RS +When the +.B LC_CTYPE +category of the locale being used is from the POSIX locale, +these functions shall behave as if the strings had been converted +to lowercase and then a byte comparison performed. +Otherwise, the results are unspecified. +.RE +.SH SEE ALSO +.BR memcmp (3), +.BR strcmp (3), +.BR strcoll (3), +.BR string (3), +.BR strncmp (3), +.BR wcscasecmp (3), +.BR wcsncasecmp (3) |