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+.Dd January 15, 2017
+.Dt GZWRITE 3
+.Os
+.
+.Sh NAME
+.Nm gzwrite
+.Nd write to compressed file
+.
+.Sh LIBRARY
+.Lb libz
+.
+.Sh SYNOPSIS
+.In zlib.h
+.Ft int
+.Fn gzwrite "gzFile file" "voidpc buf" "unsigned len"
+.
+.Sh DESCRIPTION
+Writes the given number of uncompressed bytes
+into the compressed file.
+.
+.Sh RETURN VALUES
+.Fn gzwrite
+returns the number of uncompressed bytes written
+or 0 in case of error.
+.
+.Sh SEE ALSO
+.Xr gzerror 3 ,
+.Xr gzfwrite 3 ,
+.Xr gzopen 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