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<?php function calculateAccuracy($txPower, $rssi){ if ($rssi == 0) { return -1.0; // if we cannot determine accuracy, return -1. } $ratio = $rssi*1.0/$txPower; if ($ratio < 1.0) { return pow($ratio,10); } else { $accuracy = (0.89976)*pow($ratio,7.7095) + 0.111; return $accuracy; } } echo(calculateAccuracy(-10, -70).PHP_EOL); echo(calculateAccuracy(-20, -70).PHP_EOL); echo(calculateAccuracy(-40, -70).PHP_EOL); echo(calculateAccuracy(-60, -70).PHP_EOL); echo(calculateAccuracy(-80, -70).PHP_EOL); echo(calculateAccuracy(-90, -70).PHP_EOL); echo(calculateAccuracy(-100, -70).PHP_EOL);
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 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, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
2947202.9144146 14080.649683179 67.382098337306 3.0639286725642 0.26307557616383 0.081013110222412 0.0282475249
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/oYaiT on line 18 2947202.9144146PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/oYaiT on line 19 14080.649683179PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/oYaiT on line 20 67.382098337306PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/oYaiT on line 21 3.0639286725642PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/oYaiT on line 22 0.26307557616383PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/oYaiT on line 23 0.081013110222412PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/oYaiT on line 24 0.0282475249PHP_EOL

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253.28 ms | 403 KiB | 322 Q