[Octave-bug-tracker] [bug #39314] convn(x, y, "valid") produces results that are different from Matlab

[Rik]

Follow-up Comment #2, bug #39314 (project octave):

Convolution has been no end of trouble...

For reference, can the original reporter also upload the matrices for "full"
and "same"?


conv2full = convn (zzz, hhh, 'full');
conv2same = convn (zzz, hhh, 'same');


I took a look at the code and we are doing something different for the 'valid'
parameter.  It may be that we are not calling the Fortran correctly, or maybe
the underlying BLAS call isn't right.  At least superficially 'valid' seems to
work, but the test cases I have are with integer values for the two matrices A
and B.


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