cupy.fft.irfft#

cupy.fft.irfft(a, n=None, axis=-1, norm=None)[source]#

Compute the one-dimensional inverse FFT for real input.

Parameters:

a (cupy.ndarray) – Array to be transform.
n (None or int) – Length of the transformed axis of the output. For n output points, n//2+1 input points are necessary. If n is not given, it is determined from the length of the input along the axis specified by axis.
axis (int) – Axis over which to compute the FFT.
norm ("backward", "ortho", or "forward") – Optional keyword to specify the normalization mode. Default is None, which is an alias of "backward".

Returns:

The transformed array which shape is specified by n and type will convert to complex if the input is other. If n is not given, the length of the transformed axis is`2*(m-1)` where m is the length of the transformed axis of the input.

Return type:

cupy.ndarray