.Dd January 15, 2017 .Dt GZGETC 3 .Os . .Sh NAME .Nm gzgetc .Nd get character from compressed file . .Sh LIBRARY .Lb libz . .Sh SYNOPSIS .In zlib.h .Ft int .Fn gzgetc "gzFile file" . .Sh DESCRIPTION Reads one byte from the compressed file. This is implemented as a macro for speed. As such, it does not do all of the checking the other functions do. I.e.\& it does not check to see if .Fa file is .Dv NULL , nor whether the structure .Fa file points to has been clobbered or not. . .Sh RETURN VALUES .Fn gzgetc returns the byte or -1 in case of end of file or error.