# libpngpf - Portable Network Graphics (PNG) Reference Library 1.6.... - man(3) - [phpMan]

[_LIBPNGPF_(3)](https://www.chedong.com/phpMan.php/man/LIBPNGPF/3/markdown)                           Library Functions Manual                           [_LIBPNGPF_(3)](https://www.chedong.com/phpMan.php/man/LIBPNGPF/3/markdown)

## NAME
       libpng - Portable Network Graphics (PNG) Reference Library 1.6.43 (private functions)


## SYNOPSIS
       **#include _**"pngpriv.h"_

       **As  of libpng version _**1.5.1_**, this section is no longer _**maintained_**, now that the private func‐**
       **tion 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.


## DESCRIPTION
       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.


## SEE ALSO
       [**png**(5)](https://www.chedong.com/phpMan.php/man/png/5/markdown), [**libpng**(3)](https://www.chedong.com/phpMan.php/man/libpng/3/markdown), [**zlib**(3)](https://www.chedong.com/phpMan.php/man/zlib/3/markdown), [**deflate**(5)](https://www.chedong.com/phpMan.php/man/deflate/5/markdown), and [**zlib**(5)](https://www.chedong.com/phpMan.php/man/zlib/5/markdown)


## AUTHORS
       Cosmin Truta, Glenn Randers-Pehrson

                                          February 23, 2024                              [_LIBPNGPF_(3)](https://www.chedong.com/phpMan.php/man/LIBPNGPF/3/markdown)