Run Fourier Backward transformation (the simple version) of cycle real numeric data.
| Call | DclEasyFFT_B | ( x ,a0, a, b, [index]) |
| X | < R (:) > | Output data. |
| A0 | < R > | The 0th cos component. |
| A | < R (:) > | A cos component. |
| B | < R (:) > | A sin component. |
| Index | < I > | Work area number. |
None