Canonicalize CIDR: Difference between revisions
Add MATLAB implementation
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(Add MATLAB implementation) |
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161.214.74.0/24
184.232.128.0/18</pre>
=={{header|MATLAB}}==
{{trans|Python}}
<syntaxhighlight lang="MATLAB">
clear all;close all;clc;
cidrCanonicalizer();
function cidrCanonicalizer
% Main function to test CIDR canonicalization
% Define test cases
testCases = {
'36.18.154.103/12', '36.16.0.0/12';
'62.62.197.11/29', '62.62.197.8/29';
'67.137.119.181/4', '64.0.0.0/4';
'161.214.74.21/24', '161.214.74.0/24';
'184.232.176.184/18', '184.232.128.0/18'
};
% Run test cases
for i = 1:size(testCases, 1)
ip = testCases{i, 1};
expected = testCases{i, 2};
result = canonicalize(ip);
fprintf('%s -> %s\n', ip, result);
assert(strcmp(result, expected));
end
end
function result = dottedToInt(dotted)
% Convert dotted IP to integer representation
parts = str2double(strsplit(dotted, '.'));
result = sum(parts .* (256 .^ (3:-1:0)));
end
function result = intToDotted(ip)
% Convert integer IP to dotted representation
result = strjoin(arrayfun(@(x) num2str(bitshift(bitand(ip, bitshift(255, x)), -x)), [24 16 8 0], 'UniformOutput', false), '.');
end
function result = networkMask(numberOfBits)
% Create a network mask for the given number of bits
result = bitshift((bitshift(1, numberOfBits) - 1), (32 - numberOfBits));
end
function result = canonicalize(ip)
% Canonicalize the given CIDR IP
[dotted, networkBits] = strtok(ip, '/');
networkBits = str2double(strrep(networkBits, '/', ''));
i = dottedToInt(dotted);
mask = networkMask(networkBits);
result = strcat(intToDotted(bitand(i, mask)), '/', num2str(networkBits));
end
</syntaxhighlight>
{{out}}
<pre>
36.18.154.103/12 -> 36.16.0.0/12
62.62.197.11/29 -> 62.62.197.8/29
67.137.119.181/4 -> 64.0.0.0/4
161.214.74.21/24 -> 161.214.74.0/24
184.232.176.184/18 -> 184.232.128.0/18
</pre>
=={{header|Nim}}==
Using the IpAddress type from standard module “net”.
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