HWBType           331 ext/gd/libgd/gd.c static HWBType * RGB_to_HWB (RGBType RGB, HWBType * HWB)
HWBType           356 ext/gd/libgd/gd.c 	HWBType HWB1, HWB2;
HWBType           390 ext/gd/libgd/gd.c static RGBType * HWB_to_RGB (HWBType HWB, RGBType * RGB)