Fft.inverseFft

Complex!F[] inverseFft(F =  double,  R)(R range) if (isRandomAccessRange!R &&  isComplexLike!(ElementType!R)  &&  isFloatingPoint!F)

const

Computes the inverse Fourier transform of a range. The range must be a random access range with slicing, have a length equal to the size provided at construction of this object, and contain elements that are either of type std.complex.Complex or have essentially the same compile-time interface.

Returns

The time-domain signal.

Conventions: The exponent is positive and the factor is 1/N, i.e., output[j] := (1 / N) sum[ exp(+2 PI i j k / N) input[k] ].

void inverseFft(Ret,  R)(R range,  Ret buf) if (isRandomAccessRange!Ret &&  isComplexLike!(ElementType!Ret)  &&  hasSlicing!Ret)

const

Inverse FFT that allows a user-supplied buffer to be provided. The buffer must be a random access range with slicing, and its elements must be some complex-like type.