diff options
Diffstat (limited to 'numpy/fft/__init__.py')
| -rw-r--r-- | numpy/fft/__init__.py | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/numpy/fft/__init__.py b/numpy/fft/__init__.py index fe95d8b17..36cfe81b3 100644 --- a/numpy/fft/__init__.py +++ b/numpy/fft/__init__.py @@ -118,8 +118,16 @@ The inverse DFT is defined as It differs from the forward transform by the sign of the exponential argument and the default normalization by :math:`1/n`. +Type Promotion +-------------- + +`numpy.fft` promotes ``float32`` and ``complex64`` arrays to ``float64`` and +``complex128`` arrays respectively. For an FFT implementation that does not +promote input arrays, see `scipy.fftpack`. + Normalization ------------- + The default normalization has the direct transforms unscaled and the inverse transforms are scaled by :math:`1/n`. It is possible to obtain unitary transforms by setting the keyword argument ``norm`` to ``"ortho"`` (default is @@ -183,8 +191,6 @@ For examples, see the various functions. """ -from __future__ import division, absolute_import, print_function - from ._pocketfft import * from .helper import * |