libpngpf(3) on macOS
The text e5906093d12c, as Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.5.4, Mac OS X 10.5.3 shipped it.
Portable Network Graphics (PNG) Reference Library 1.2.24 (private functions)
The text e5906093d12c, as Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.5.4, Mac OS X 10.5.3 shipped it.
Portable Network Graphics (PNG) Reference Library 1.2.24 (private functions)