HIST_C1_BITS      249 ext/gd/libgd/gd_topal.c #define HIST_C1_ELEMS  (1<<HIST_C1_BITS)
HIST_C1_BITS      254 ext/gd/libgd/gd_topal.c #define C1_SHIFT  (BITS_IN_JSAMPLE-HIST_C1_BITS)
HIST_C1_BITS      902 ext/gd/libgd/gd_topal.c #define BOX_C1_LOG  (HIST_C1_BITS-3)