@param fp Pointer to the source file @param h Pointer to the header previously read (fully or partially) @param b Pointer to the record placeholder @return >= 0 on successfully reading a new record, -1 on end of stream, < -1 on error
See Implementation
@param fp Pointer to the source file @param h Pointer to the header previously read (fully or partially) @param b Pointer to the record placeholder @return >= 0 on successfully reading a new record, -1 on end of stream, < -1 on error