/usr/share/calc/help/strcasecmp is in apcalc-common 2.12.5.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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strcasecmp - compare two strings, case independent
SYNOPSIS
strcasecmp(s1, s2)
TYPES
s1 string
s2 string
return integer (1, 0 or -1)
DESCRIPTION
Let n1 = size(s1), n2 = size(s2) and m = min(n1, n2).
This function compares up to m values of consecutive characters
in the strings s1 and s2. If an inequality is encountered, the
function returns 1 or -1 according as the greater character is
in s1 or s2. If there has been no inequality, the function
returns 1, 0, or -1 according as n1 is greater than, equal to,
or less than n2.
Note that null characters within the strings are included in the
comparison.
This function is case independent
EXAMPLE
strcasecmp("ab", "aBc") == -1
strcasecmp("abc", "aBb") == 1
strcasecmp("abc", "abc") == 0
strcasecmp("abc", "aBc") == 0
strcasecmp("abc", "aBd") == -1
strcasecmp("abc\0", "aBc") == 1
strcasecmp("a\0b", "A\0c") == -1
LIMITS
none
LINK LIBRARY
FLAG stringcaserel(STRING *s1, STRING *s2)
SEE ALSO
strcat, strcpy, strerror, strlen, strncmp, strncasecmp strncpy, strpos,
strprintf, strscan, strscanf, substr
## Copyright (C) 2013 Christoph Zurnieden
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL. You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## @(#) $Revision: 30.3 $
## @(#) $Id: strcasecmp,v 30.3 2013/09/01 21:23:25 chongo Exp $
## @(#) $Source: /usr/local/src/bin/calc/help/RCS/strcasecmp,v $
##
## Under source code control: 2013/09/01 18:10:53
## File existed as early as: 2013
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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