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<?php printf("%f", (bcpow("2","4",0) - 1) );
Output for 4.3.0 - 5.5.33, 5.5.35 - 5.6.19, 5.6.21 - 7.0.4, 7.0.6 - 7.1.0
15.000000
Output for 7.0.5
Fatal error: Uncaught Error: Call to undefined function bcpow() in /in/2QkoU:2 Stack trace: #0 {main} thrown in /in/2QkoU on line 2
Process exited with code 255.
Output for 5.5.34, 5.6.20
Fatal error: Call to undefined function bcpow() in /in/2QkoU on line 2
Process exited with code 255.