Re: Realtime cost of call by value

[Geraint Paul Bevan]

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Glenn Golden wrote:

| in a DLD.  The moment you put an Octave object on the LHS of
| an assignment -- even in C++ code, dereferencing the object through
| a pointer -- the copy down occurs, and your lunch is eaten.

Hi Glenn,

sorry, I must have misunderstood what you were trying to do. I thought
you were just trying to pass large "const" objects betweem .oct
functions and the Octave interpreter without having them copied during
the function call. You are quite right, of course, that the use of
pointers will not change the way that Octave performs operations when
you manipulate the data by placing it on the left hand side of an
assignment.

Geraint.

- --
Geraint Bevan
http://homepage.ntlworld.com/geraint.bevan

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