png_set_hIST     1089 contrib/libtests/makepng.c    png_set_hIST(png_ptr, info_ptr, freq);
png_set_hIST     2159 png.h          PNG_EXPORT(142, void, png_set_hIST, (png_const_structrp png_ptr,
png_set_hIST     1996 pngrutil.c        png_set_hIST(png_ptr, info_ptr, readbuf);
png_set_hIST     1170 pngtest.c               png_set_hIST(write_ptr, write_info_ptr, hist);