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run code in 150+ php & hhvm versions
Bugs & Features
<?php foreach (array(0.1, -0.1, 1.0, 123.4, -123.4, -5.45, 5.46) as $i) { $b=sprintf("%.1e\n", $i); echo $i.' => '.(float)$b. "\n"; }
Output for 5.2.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
0.1 => 0.1 -0.1 => -0.1 1 => 1 123.4 => 120 -123.4 => -120 -5.45 => -5.5 5.46 => 5.5
Output for 4.3.0 - 5.2.0
0.1 => 0.1 -0.1 => -0.1 1 => 1 123.4 => 100 -123.4 => -100 -5.45 => -5 5.46 => 5