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%% Copyright: 2010 Integrated Sytems Laboratory, ETH Zurich
%%            http://www.iis.ee.ethz.ch/~sha3
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function not=complement(a)
tmp0=uint64(bitcmp(uint32(bitand(bitshift(a,-32),2^32-1)),32));
tmp1=uint64(bitcmp(uint32(bitand(a,2^32-1)))); 
not= bitor(bitshift(tmp0,32),tmp1);
end