2006/03/13 (月) 21:45:37　 ◆　 ▼　 ◇　 [qwerty]
0x999999999999999 to decimal
  0x999999999999999 = 6.91752903 × 10^17

log(0x999999999999999)
  log(0x999999999999999) = 17.839951

Google Clacは便利だな