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<?php $x = 0.0; $y = -0.0; printf("%.08f == %.08f: %d\n", atan2($x, $y), atan2($y, $y), atan2($x, $y) == atan2($y, $y));
Output for 7.0.2 - 7.0.20, 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 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
3.14159265 == -3.14159265: 0
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 - 5.6.28, 7.0.0 - 7.0.1
0.00000000 == 0.00000000: 1
preferences:
115.49 ms | 2288 KiB | 4 Q