Legendre Backward transformation.
| Call | DclLegendreTransform_B | (A m, sm, wm ,isw, idx) | 
| M | < I > | The band state wave number that does conversion. | 
| Sm | < R (:) > | Spectrum data | 
| Wm | < R (:) > | Wave data | 
| Isw | < I > | Kind of conversion | 
| Idx | < I > | Work area number. /Td> | 
None