Re: Unexpected result in floor function

ruben wrote:

Hi: Why is the "floor" function returning 27564 instead of 27565 in this script? PHP version is 4.2.2. Thanks! Ruben. #!/usr/bin/php -q <?php $b = 275.65 * 100;

$b = (int)$b; /* $b was a floating point number with value something like 27564.9999989, when displayed it shows correctly 27565, but in calculations 27564.9999989 is used. Q: Do you know why pentiums are faster than 486 processors? A: Because 486 computes, pentium guesses. */

echo "\n\nb= ".$b;

echo "\nfloor(b)= ".floor($b);    // Incorrect. why 27564?

$b = 27565; echo "\n\nb= ".$b;

echo "\nfloor(b)= ".floor($b)."\n\n";    // Correct

?>