[PyCUDA] complementary error function erfc

[Andreas Klöckner]

On Sonntag 14 März 2010, Faisal Moledina wrote:
> Hello PyCUDA list,
> 
> I'm just starting out with PyCUDA and have not used much more than
> gpuarray and cumath. In fact, I have yet to program my own CUDA
> kernel. I'm wondering if there is a built-in erfc method for a
> gpuarray. If PyCUDA doesn't have one built-in, how would I implement a
> CUDA kernel for erfc? Prior to PyCUDA, I was using scipy.special.erfc
> on NumPy arrays.

You could use to pycuda.elementwise to shield you from any actual CUDA
programming--and use [1] as a (high-quality) implementation guideline.
Maybe you could even tweak that header directly (add a few __device__
specs).

[1]
https://svn.boost.org/trac/boost/browser/trunk/boost/math/special_functions/erf.hpp

Andreas
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