NAME

       xdf_seek - move the sample pointer of a xDF file

SYNOPSIS

       #include <xdfio.h>

       off_t xdf_seek(struct xdf* xdf, off_t offset, int whence);

DESCRIPTION

       xdf_seek()  repositions  the  current sample pointer according to the couple (offset,whence) where whence
       can be:

       SEEK_SET
              The offset is set to offset bytes.

       SEEK_CUR
              The offset is set to its current location plus offset bytes.

       SEEK_END
              The offset is set to the size of the file plus offset bytes.

       The file referenced by xdf should have been opened with mode XDF_READ  and  xdf_prepare_arrays(3)  should
       have been successfully called on it.

RETURN VALUE

       Upon  successful  completion,  xdf_seek()  returns the resulting offset location as measured in number of
       samples from the beginning of the recording. Otherwise, a value of -1 is returned and  errno  is  set  to
       indicate the error.

ERRORS

       EINVAL xdf is NULL or whence is none of the allowed values.

       EPERM  No  successfull  call to xdf_prepare_transfer(3) have been done on xdf or it has been opened using
              the mode XDF_WRITE.

       ERANGE The requested offset is out of the range of the recording.

       EINTR  The call was interrupted by a signal before any data was read; see signal(7).

       EIO    A low-level I/O error occurred while reading from the inode.

       ESTALE Stale file handle. This error can occur for NFS and for other file systems

SEE ALSO

       xdf_define_arrays(3), xdf_prepare_transfer(3)