append append_n_null append_null has init initSeq insert insert_n_null insert_n_null insert_null read read_all_names read_buffer_row_count read_column_count read_index read_info read_n read_n read_n_indices read_n_segments read_n_segments read_n_segments_to read_n_segments_to read_n_segments_to read_n_segments_to read_n_to read_n_to read_n_to read_n_to read_name read_row_count read_segment read_segment_to read_segment_to read_to read_to readAllNames readBufferRowCount readColumnCount readIndex readIndices readInfo readName readRowCount readSegment readSegmentSeq readSegmentSeq readSegmentSeqTo readSegmentTo readSeq readSeq readSeqTo readTo remove remove_n removeSeq rename update_name write write_n write_n write_n_segments write_n_segments write_segment writeSegment writeSegmentSeq writeSeq

read_buffer_row_count() long read_buffer_row_count ( ) const Get the number of rows in the internal buffer. CFITSIO internally implements a buffer to read and write data units efficiently. To optimize its usage, columns should be read and written by chunks of the buffer size at most.