function s = int2str(x)

%INT2STR Represent integers as character array

%   S = INT2STR(X) rounds the elements of numeric matrix X to integers and 

%   converts the result into a character array that represents the numbers.

%

%   INT2STR returns NaN and Inf elements as 'NaN' and 'Inf', respectively.

%

%   See also NUM2STR, SPRINTF, FPRINTF, MAT2STR.

%   Copyright 1984-2016 The MathWorks, Inc.

% only work with real portion of x

x = real(x); 

% create a copy of x to use to calculate maximum width in digits

widthCopy = x; 

if isfloat(x) 

    x = 0+round(x); %remove negative zero 

    % replace Inf and NaN with a number of equivalent length for width

    % calcultion

    widthCopy(~isfinite(widthCopy)) = 314; 

    formatConversion = '.0f'; 

elseif isa(x, 'uint64')

    formatConversion = 'lu';

else

    formatConversion = 'ld';

end

if isempty(x) 

    s = '';

elseif isscalar(x) 

    s = sprintf(['%', formatConversion], x); 

else

    % determine the variable text field width quantity

    widthMax = double(max(abs(widthCopy(:))));

    if widthMax == 0

        width = 3;

    else

        width = floor(log10(widthMax)) + 3;

    end

    format = sprintf('%%%d%s', width, formatConversion);

    [rows, cols] = size(x);

    s = char(zeros(rows, width*cols));

    for row = 1:rows

        % use vectorized version of sprintf for each row

        s(row,:) = sprintf(format, x(row,:));

    end

    % trim leading spaces from string array within constraints of rectangularity.

    s = strtrim(s);

end