User's Guide
Page 191
... are provided by owner of the copyright to the "libpng". Hence arithmetic coding cannot legally be used without even the implied warranty of the JPEG spec is copyright by IBM , AT&T, and Mitsubishi. In case of any discrepancy between this copy and the notices in the file png.h that "The Graphics...
... are provided by owner of the copyright to the "libpng". Hence arithmetic coding cannot legally be used without even the implied warranty of the JPEG spec is copyright by IBM , AT&T, and Mitsubishi. In case of any discrepancy between this copy and the notices in the file png.h that "The Graphics...