png_handle_hIST   364 pngpread.c           png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length);
png_handle_hIST  1301 pngpriv.h      PNG_INTERNAL_FUNCTION(void,png_handle_hIST,(png_structrp png_ptr,
png_handle_hIST   182 pngread.c               png_handle_hIST(png_ptr, info_ptr, length);
png_handle_hIST   839 pngread.c               png_handle_hIST(png_ptr, info_ptr, length);