gztell

gztell -- tell gz-file pointer read/write position

Description

int gztell(int zp);

Returns the position of the file pointer referenced by zp; i.e., its offset into the file stream.

If an error occurs, returns false.

The file pointer must be valid, and must point to a file successfully opened by gzopen().

See also gzopen(), gzseek() and gzrewind().