`(y)=ifft2(x)`

Inputs | |

`x` |
A two dimensional array of real or complex numbers. |

Outputs | |

`y` |
A two dimensional array of complex numbers. |

The output of

`ifft2`

is the inverse Fast Fourier Transform of the input.
Prior
to the computation of the transform, the input is
padded with sufficient number of rows and columns with zeros so that
both the row-size and the column size of the array is a power of 2.