#include <simgear/compiler.h>
-#include <Main/fgfs.hxx>
-
#ifdef SG_HAVE_STD_INCLUDES
# include <cmath>
#else
virtual double get_temperature_sea_level_degc () const;
virtual double get_temperature_degc () const;
+ virtual double get_temperature_degf () const;
virtual double get_dewpoint_sea_level_degc () const;
virtual double get_dewpoint_degc () const;
virtual double get_pressure_sea_level_inhg () const;