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strcasecmp.3: Clarify that strcasecmp() does a byte-wise comparison 

Reported-0by: Jonny Grant <jg@jguk.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-04-12 09:43:27 +02:00
parent cad62ef6ab
commit e20476d370
1 changed files with 12 additions and 1 deletions
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13
man3/strcasecmp.3
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@ -41,7 +41,7 @@ strcasecmp, strncasecmp \- compare two strings ignoring case
.SH DESCRIPTION
The
.BR strcasecmp ()
function compares the two strings
function performs a byte-by-byte comparison of the strings
.I s1
and
.IR s2 ,
@ -102,6 +102,17 @@ header file also declares these functions, if the
(or, in glibc 2.19 and earlier,
.BR _BSD_SOURCE )
feature test macro is defined.
The POSIX.1-2008 standard says of these functions:
.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 bcmp (3),
.BR memcmp (3),