calc_gammastar          Calculates the CO2 compensation point
calc_kmm                Calculates the Michaelis Menten coefficient for
                        Rubisco-limited photosynthesis
calc_patm               Calculates atmospheric pressure
calc_soilmstress        Calculates an empirical soil moisture stress
                        factor
co2_to_ca               CO2 partial pressure
dampen_vec              Dampen inputs of rpmodel
density_h2o             Density of water
ftemp_arrh              Calculates the Arrhenius-type temperature
                        response
ftemp_inst_jmax         Calculates the instantaneous temperature
                        response of Jmax
ftemp_inst_rd           Calculates the temperature response of dark
                        respiration
ftemp_inst_vcmax        Calculates the instantaneous temperature
                        response of Vcmax
ftemp_kphio             Calculates the temperature dependence of the
                        quantum yield efficiency
rpmodel                 Invokes a P-model function call
viscosity_h2o           Viscosity of water
