[Numpy-discussion] Re: indexing problem
oliphant at ee.byu.edu
Mon Feb 13 14:08:03 CST 2006
Tim Hochberg wrote:
> I've been trying to look into the problem described below, but I just
> can't find where complex multiplication is being done (all the other
> multiplication, but not complex). Could someone with a grasp of the
> innards of numpy please point me in the right direction?
Look in the build directory for __umath_generated.c. In there you will
see that multiplication for complex numbers is done using PyUFunc_FF_F
and friends (i.e. using a generic interface for wrapping a "scalar"
function). The scalar function wrapped into a ufunc vectorized
function is given in multiply_data. In that file you should see it
present as nc_prodf, nc_prod, nc_prodl.
nc_prod and friends are implemented in umathmodule.c.src
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