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<?php $var = (float)1; $lat2 = 56.6404468; $lon2 = 22.4747625; $lat1 = 56.6404468; $lon1 = 22.4747622; $theta = $lon1 - $lon2; $var = sin( deg2rad( $lat1 ) ) * sin( deg2rad( $lat2 ) ) + cos( deg2rad( $lat1 ) ) * cos( deg2rad( $lat2 ) ) * cos( deg2rad( $theta ) ); var_dump( acos( $var ) ); // float NAN
Output for 4.3.4 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 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 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
float(NAN)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/RCskd on line 12
Process exited with code 255.
Output for 4.3.3

Process exited with code 137.
Output for 4.3.0 - 4.3.2
float(0.E+79)

preferences:
282.96 ms | 401 KiB | 350 Q