[Octave-bug-tracker] [bug #47063] computation between single and double performed with single precision

[John W. Eaton]

Follow-up Comment #3, bug #47063 (project octave):

You are on the right track, but "demotion" means to reduce the rank of
something, so that seems like the wrong word for a function that promotes
float to double.  It also makes no sense to have a demotion or promotion
function that just makes a new value of the same type.  Instead, if we are
going to promote singles to doubles, we should remove the function that used
to demote doubles to singles and add a promotion function for singles to
doubles.  And rename all of them, if we only need to do promotion.  And you
need to do it for matrix types as well, not just scalars.

But I'm still not sure this is a good idea.  I'm not sure we should follow
Matlab in this case.


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