PGAGetRealFromGrayCode(3) on Linux
The text 4be942963eb1, as Debian 3.1 (Sarge), Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm), Debian 1.3 (Bo), Debian 1.2 (Rex) shipped it. The page shows this text now.
interpets a binary reflected Gray code sequence in a binary string as encoding a real value and returns the real value it represents.