<?php
function roundDownToHalf($number) {
$remainder = ($number * 10) % 10;
$half = $remainder >= 5 ? 0.5 : 0;
$value = floatval(intval($number) + $half);
return number_format($value, 1, '.', '');
}
define("ENDL", "\n");
print roundDownToHalf(4.9) . ENDL;
print roundDownToHalf(4.8) . ENDL;
print roundDownToHalf(4.5) . ENDL;
print roundDownToHalf(3.8) . ENDL;
print roundDownToHalf(2.3) . ENDL;
print roundDownToHalf(1.0) . ENDL;
?>
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- 4.5
4.5
4.5
3.5
2.0
1.0
preferences:
267.86 ms | 406 KiB | 424 Q