[Insight-developers] a small bug in itkConjugateGradientOptimizer

[Ashish Poddar]

hi,

I am not sure whether it qualifies as a bug or not, but surely affects
the re-usability and pluggability model of ITK Library.

the GetValue() function in ConjugateGradientOptimizer class currently is

MeasureType GetValue();

but in case of RegularStepGradientDescentOptimizer class its defined by macro as

MeasureType GetValue() const;

which is an interface mis-match... This I encountered when i replaced
regular step gradient descent optimizer by conjugate gradient
optimizer. In the observer I was using a const reference of the
optimizer and displaying the value (just the example which is
available for the same nothing new =D)...

with regards,
Ashish.

-- 
Ashish Poddar
Have an acceptable reason for accepting anything.
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