[expect php]

[file]



<?php



function dump($n)

{

 if (is_float($n)) echo "double: ";

 else if (is_int($n)) echo "Int: ";

 else echo "???: ";

 echo round($n,5) . "\n";

}



dump(pow(2, 8)); // int(256)

//dump(pow(10, 12)); // double(1000000000000)

dump(pow(15, 7));



dump(pow(-1, 20)); // 1

dump(pow(0, 0)); // 1



echo is_infinite(pow(0, -5.5)) ? "INF":"NUMBER"; // error

echo is_infinite(pow(0, 5.5)) ? "INF":"NUMBER"; // error

echo is_nan(pow(-1, 5.5)) ? "NaN":"NUMBER"; // error



dump(pow(2, -5.5)); // 0.0221

dump(pow(2, -5)); // 0.3125





?>