24 lines
500 B
Matlab
Executable File
24 lines
500 B
Matlab
Executable File
function ret = crc32(bits)
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poly = [1 de2bi(hex2dec('EDB88320'), 32)]';
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bits = bits(:);
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% Flip first 32 bits
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bits(1:32) = 1 - bits(1:32);
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% Add 32 zeros at the back
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bits = [bits; zeros(32,1)];
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% Initialize remainder to 0
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rem = zeros(32,1);
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% Main compution loop for the CRC32
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for i = 1:length(bits)
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rem = [rem; bits(i)]; %#ok<AGROW>
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if rem(1) == 1
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rem = xor(rem,poly);%mod(rem + poly, 2);
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end
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rem = rem(2:33);
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end
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% Flip the remainder before returning it
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ret = 1 - rem;
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end
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