libpng - Portable Network Graphics (PNG) Reference Library 1.6.37 (private
functions)
#include "pngpriv.h"
As of libpng version 1.5.1, this section is no
longer maintained, now that the private function
prototypes are hidden in pngpriv.h and not accessible
to applications. Look in pngpriv.h for the prototypes
and a short description of each function.
The functions previously listed here are used privately by libpng and are not
available for use by applications. They are not "exported" to
applications using shared libraries.
png(5), libpng(3), zlib(3), deflate(5),
and zlib(5)
Cosmin Truta, Glenn Randers-Pehrson