#! /usr/local/bin/php
pass: 4611686018427387904
pass: -6917529027641081856
pass: -3458764513820540928
pass: -1729382256910270464
pass: -864691128455135232
pass: -432345564227567616
pass: -216172782113783808
pass: -108086391056891904
pass: -54043195528445952
pass: -27021597764222976
pass: -13510798882111488
pass: -6755399441055744
pass: -3377699720527872
pass: -1688849860263936
pass: -844424930131968
pass: -422212465065984
pass: -211106232532992
pass: -105553116266496
pass: -52776558133248
pass: -26388279066624
pass: -13194139533312
pass: -6597069766656
pass: -3298534883328
pass: -1649267441664
pass: -824633720832
pass: -412316860416
pass: -206158430208
pass: -103079215104
pass: -51539607552
pass: -25769803776
pass: -12884901888
pass: -6442450944
pass: -3221225472
pass: -1610612736
pass: -805306368
pass: -402653184
pass: -201326592
pass: -100663296
pass: -50331648
pass: -25165824
pass: -12582912
pass: -6291456
pass: -3145728
pass: -1572864
pass: -786432
pass: -393216
pass: -196608
pass: -98304
pass: -49152
pass: -24576
pass: -12288
pass: -6144
pass: -4096
pass: -2048
FAIL: 0

END fail equal after 54 iterations
current: 0
last_pass: 1.844674407371E+19
last_fail: 1.844674407371E+19

current power: (2 ^ 64)
power double check: 18446744073709551616.000000