cupyx.scipy.fftpack.rfft¶

cupyx.scipy.fftpack.rfft(x, n=None, axis=-1, overwrite_x=False)¶

Compute the one-dimensional FFT for real input.

The returned real array contains

[y(0),Re(y(1)),Im(y(1)),...,Re(y(n/2))]  # if n is even
[y(0),Re(y(1)),Im(y(1)),...,Re(y(n/2)),Im(y(n/2))]  # if n is odd

Parameters:	x (cupy.ndarray) – Array to be transformed. n (None or int) – Length of the transformed axis of the output. If `n` is not given, the length of the input along the axis specified by `axis` is used. axis (int) – Axis over which to compute the FFT. overwrite_x (bool) – If True, the contents of `x` can be destroyed.
Returns:	The transformed array.
Return type:	cupy.ndarray