MAKE_COOLER 100 gc/include/private/gc_priv.h # define MAKE_COOLER(x,y) if ((word)(x)+(y) > (word)(x)) {(x) += (y);} \ MAKE_COOLER 106 gc/include/private/gc_priv.h # define MAKE_COOLER(x,y) if ((word)(x)-(y) < (word)(x)) {(x) -= (y);} else {(x) = 0;}