/usr/share/freemat/toolbox/array/isspace.m is in freemat-data 4.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | % ISSPACE ISSPACE Test for Space Characters in a String
%
% Usage
%
% The isspace functions returns a logical array that is 1
% for characters in the argument string that are spaces, and
% is a logical 0 for characters in the argument that are not
% spaces. The syntax for its use is
%
% x = isspace(s)
%
% where s is a string. A blank character is considered
% a space, newline, tab, carriage return, formfeed, and vertical
% tab.
% Copyright (c) 2002-2007 Samit Basu
% Licensed under the GPL
function x = isspace(s)
s = int32(string(s));
x = ((s >=9 ) & (s <= 13)) | (s == 32);
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