<?php $a = INF; $n = pow(2,64); var_dump( $a/$n ); // floating point div with non-zero value echo $a - ($n * (int) ($a/$n) ),"\n"; // INF but s/b NAN echo fmod(INF,pow(2,64)),"\n"; // NAN correct! echo INF % pow(2,64); // integer div b/c % so pow(2,64) becomes 0
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