.Dd January 15, 2017 .Dt ZLIBVERSION 3 .Os . .Sh NAME .Nm zlibVersion .Nd check zlib version . .Sh LIBRARY .Lb libz . .Sh SYNOPSIS .In zlib.h .Fd #define ZLIB_VERSION \(dq1.2.11\(dq .Ft "const char *" .Fn zlibVersion void . .Sh DESCRIPTION The application can compare .Fn zlibVersion and .Dv ZLIB_VERSION for consistency. If the first character differs, the library code actually used is not compatible with the .In zlib.h header file used by the application. This check is automatically made by .Xr deflateInit 3 and .Xr inflateInit 3 . . .Sh SEE ALSO .Xr zlibCompileFlags 3 . .Sh HISTORY This manual page was converted from .In zlib.h to mdoc format by .An C. McEnroe Aq Mt june@causal.agency . . .Sh AUTHORS .An Jean-loup Gailly Aq Mt jloup@gzip.org .An Mark Adler Aq Mt madler@alumni.caltech.edu