[Octave-bug-tracker] [bug #40813] atan2, fmod, hypot returns no results for sparse matrices

[Rik]

Update of bug #40813 (project octave):

                 Summary: atan2 returns no results for sparse matrices =>
atan2, fmod, hypot returns no results for sparse matrices

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Follow-up Comment #3:

Using Mercurial I have traced the problem back to changeset 6a271334750c.  In
that changeset the implementation of atan2, fmod, and hypot were switched over
to binmap().

Indeed, the first problem that I reported with atan2 also exists for fmod.


fmod (sparse (11), sparse ([2 3]))
ans =

Compressed Column Sparse (rows = 1, cols = 2, nnz = 0 [0%])

BUT

fmod (sparse ([11 11]), sparse ([2 3]))
ans =

Compressed Column Sparse (rows = 1, cols = 2, nnz = 2 [100%])

  (1, 1) ->  1
  (1, 2) ->  2


So part of the problem seems to be that a scalar is not expanded in the same
way as it would be for a full matrix.  I won't have time to look at this or
the submitted patch until the weekend.




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