double is_computer_on_fire( void )
BeOS kernel function, returns the temperature of the motherboard if the computer is currently on fire. Smoldering doesn't count. If the computer isn't on fire, the function returns some other value. (Be Book)

see also: is_computer_on()

to be consistent with the naming conventions used in the rest of the BeOS API, this function should really be
        static bool BComputer::isOnFire();
and should return false if the computer is not on fire. I guess it's okay to return an undefined value when the computer is on fire.