cupyx.scipy.fft.next_fast_len#

cupyx.scipy.fft.next_fast_len(target, real=False)[source]#

Find the next fast size to fft.

Parameters:

  • target (int) – The size of input array.

  • real (bool) – True if the FFT involves real input or output. This parameter is of no use, and only for compatibility to SciPy’s interface.

Returns:

The smallest fast length greater than or equal to the input value.

Return type:

int

See also

scipy.fft.next_fast_len()

Note

It may return a different value to scipy.fft.next_fast_len() as pocketfft’s prime factors are different from cuFFT’s factors. For details, see the cuFFT documentation.