Hello,

I need to use Vector FullMatrix, BlockVector and BlockSparseMatrix with 
different datatype than what is already provided and instantiated (float, 
double...). I have the following problem when instantiating with a 
different type: the linking fails due to the multiple definitions of the 
following functions:
vector.cc:-1: error: multiple definition of 
`dealii::Vector<std::complex<float> >::operator=(std::complex<float>)'
vector.cc:-1: error: multiple definition of 
`dealii::Vector<int>::lp_norm(int) const'

These two functions are explicitly instantiated in vector.templates.h for 
float and int types. But, if I instantiate Vector<myNumber> in my code 
these two definitions will appear in both files (vector.cc and my source 
file) even though I use a different type.
Could you please let me know if there is a reason to instantiate them in 
the header file rather than in the source vector.cc file?
Thank you.

Dragan

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