#ifdef ALLOW_HFLUX_COST_CONTRIBUTION
#if (defined (ALLOW_HFLUX_COST_CONTRIBUTION)
#if (defined (ALLOW_HFLUX_COST_CONTRIBUTION))
#if (defined (ALLOW_HFLUX_COST_CONTRIBUTION) defined (ALLOW_HFLUX_CONTROL))
# undef ALLOW_HFLUX_COST_CONTRIBUTION
# define ALLOW_HFLUX_COST_CONTRIBUTION
defined (ALLOW_HFLUX_COST_CONTRIBUTION)))