CODEWITHSUNDEEP
c++iteratoropenmp
viz12
viz12

Reputation: 725

OMP for loop with no initialization

I am trying to run a code snippet using openmp, but it gives compile error as there is no initialization in the for loop. The iterator class is defined here. I am not able to figure out how can I initialize inside the for loop.

I am not an expert in C++, so I would appreciate any help. 

ntHashIterator itr(seq, h, k);
#pragma omp parallel for  
for(; itr != itr.end(); ++itr){ 
   std::cout << (*itr)[0] << std::endl; 
}

Upvotes: 0

Views: 609

Answers (1)

Daniel Langr
Daniel Langr

Reputation: 23547

OpenMP requires loops to be in so-called canonical loop form. Moreover, it can works with iterators, but they have to be of a random-access iterator type. Which doesn't seem to be your case, since your nHashIterator does not support + and += operators. See the OpenMP specifications for more details.

Anyway, it's hard to tell more, since you are not providing enough details such as a compiler and OpenMP version which it supports.

Upvotes: 2

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