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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(sprintf('%.15f', -9.341+2.111));
based on h3TvB
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
string(18) "-7.229999999999999"