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<?php $n = 0 - 0.0000000000000001; var_dump($n); // float(-1.0E-33) var_dump(round($n)); // float(-0) -- huh?! var_dump(abs($n)); // float(1.0E-33) var_dump(abs(round($n))); // float(0) var_dump(round($n) == 0); // bool(true) var_dump(round($n) === 0); // bool(false)
Output for git.master, git.master_jit, rfc.property-hooks
float(-1.0E-16) float(-0) float(1.0E-16) float(0) bool(true) bool(false)

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