[FlopCpp] Constraint index with '-' operation

[Marcos Roberto Silva]

Hi all.
I'm trying to write a constraint like this:

balanco2(I,T_) = sum(J, (X(I,J,T_) + Y(I,J,T_))) - Y(I,I,T_-1) - sum(K,
(X(K,I,(T_-tij(K,I))) + Y(K,I, (T_-tij(K,I)) )) ) == mit(I,T_);

but when I try to compile the source code I get the following error:

marcos at marcos-Infoway:~/Documentos/FlopC++-1.0.6/FlopCpp/examples$ make vap2
g++ -g -I../../include/coin vap2.cpp -L../../lib -Wl,-rpath,../../lib
-lFlopCpp -lOsiCbc -lCbc -lOsiClp -lClp -lCgl -lOsi -lCoinUtils -o vap2
vap2.cpp: In function ‘int main(int, char**)’:
vap2.cpp:179:92: error: no match for ‘operator-’ in ‘T_ -
tij.flopc::MP_data::operator()(((const flopc::MP_index_exp&)(&
flopc::MP_index_exp(((flopc::MP_index&)(&
K.flopc::MP_set::<anonymous>.flopc::MP_set_base::<anonymous>))))), ((const
flopc::MP_index_exp&)(& flopc::MP_index_exp(((flopc::MP_index&)(&
I.flopc::MP_set::<anonymous>.flopc::MP_set_base::<anonymous>))))), ((const
flopc::MP_index_exp&)((const
flopc::MP_index_exp*)flopc::MP_index_exp::getEmpty())), ((const
flopc::MP_index_exp&)((const
flopc::MP_index_exp*)flopc::MP_index_exp::getEmpty())), ((const
flopc::MP_index_exp&)((const
flopc::MP_index_exp*)flopc::MP_index_exp::getEmpty())))’
../../include/coin/MP_constant.hpp:60:12: note: candidates are:
flopc::Constant flopc::operator-(const flopc::Constant&)
../../include/coin/MP_constant.hpp:130:12: note:
flopc::Constant flopc::operator-(const flopc::Constant&, const
flopc::Constant&)
../../include/coin/MP_index.hpp:107:12: note:
flopc::Constant flopc::operator-(flopc::MP_index&, flopc::MP_index&)
../../include/coin/MP_index.hpp:217:25: note:
flopc::MP_index_exp flopc::operator-(flopc::MP_index&, const int&)
../../include/coin/MP_expression.hpp:177:17: note:
flopc::MP_expression flopc::operator-(const flopc::MP_expression&, const
flopc::MP_expression&)
../../include/coin/MP_expression.hpp:179:17: note:
flopc::MP_expression flopc::operator-(const flopc::MP_expression&, const
flopc::Constant&)
../../include/coin/MP_expression.hpp:181:17: note:
flopc::MP_expression flopc::operator-(const flopc::Constant&, const
flopc::MP_expression&)
/usr/include/c++/4.5/bits/stl_bvector.h:179:3: note:
ptrdiff_t std::operator-(const std::_Bit_iterator_base&, const
std::_Bit_iterator_base&)
../../include/coin/CoinPackedVector.hpp:602:1: note:
CoinPackedVector operator-(double, const CoinPackedVectorBase&)
../../include/coin/CoinPackedVector.hpp:564:1: note:
CoinPackedVector operator-(const CoinPackedVectorBase&, double)
../../include/coin/CoinPackedVector.hpp:462:25: note:
CoinPackedVector operator-(const CoinPackedVectorBase&, const
CoinPackedVectorBase&)
vap2.cpp:179:116: error: no match for ‘operator-’ in ‘T_ -
tij.flopc::MP_data::operator()(((const flopc::MP_index_exp&)(&
flopc::MP_index_exp(((flopc::MP_index&)(&
K.flopc::MP_set::<anonymous>.flopc::MP_set_base::<anonymous>))))), ((const
flopc::MP_index_exp&)(& flopc::MP_index_exp(((flopc::MP_index&)(&
I.flopc::MP_set::<anonymous>.flopc::MP_set_base::<anonymous>))))), ((const
flopc::MP_index_exp&)((const
flopc::MP_index_exp*)flopc::MP_index_exp::getEmpty())), ((const
flopc::MP_index_exp&)((const
flopc::MP_index_exp*)flopc::MP_index_exp::getEmpty())), ((const
flopc::MP_index_exp&)((const
flopc::MP_index_exp*)flopc::MP_index_exp::getEmpty())))’
../../include/coin/MP_constant.hpp:60:12: note: candidates are:
flopc::Constant flopc::operator-(const flopc::Constant&)
../../include/coin/MP_constant.hpp:130:12: note:
flopc::Constant flopc::operator-(const flopc::Constant&, const
flopc::Constant&)
../../include/coin/MP_index.hpp:107:12: note:
flopc::Constant flopc::operator-(flopc::MP_index&, flopc::MP_index&)
../../include/coin/MP_index.hpp:217:25: note:
flopc::MP_index_exp flopc::operator-(flopc::MP_index&, const int&)
../../include/coin/MP_expression.hpp:177:17: note:
flopc::MP_expression flopc::operator-(const flopc::MP_expression&, const
flopc::MP_expression&)
../../include/coin/MP_expression.hpp:179:17: note:
flopc::MP_expression flopc::operator-(const flopc::MP_expression&, const
flopc::Constant&)
../../include/coin/MP_expression.hpp:181:17: note:
flopc::MP_expression flopc::operator-(const flopc::Constant&, const
flopc::MP_expression&)
/usr/include/c++/4.5/bits/stl_bvector.h:179:3: note:
ptrdiff_t std::operator-(const std::_Bit_iterator_base&, const
std::_Bit_iterator_base&)
../../include/coin/CoinPackedVector.hpp:602:1: note:
CoinPackedVector operator-(double, const CoinPackedVectorBase&)
../../include/coin/CoinPackedVector.hpp:564:1: note:
CoinPackedVector operator-(const CoinPackedVectorBase&, double)
../../include/coin/CoinPackedVector.hpp:462:25: note:
CoinPackedVector operator-(const CoinPackedVectorBase&, const
CoinPackedVectorBase&)
make: ** [vap2] Erro 1
marcos at marcos-Infoway:~/Documentos/FlopC++-1.0.6/FlopCpp/examples$


When I remove the term:

... - sum(K, (X(K,I,(T_-tij(K,I))) + Y(K,I, (T_-tij(K,I)) )) )

I can compile without problems. It seems that the problem is when I try to
do T_-tij(K,I).

Do you have any idea of how can I write this constraint?

Thank you very much.

Marcos Roberto Silva
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