Reverted copy - to squash

Author: JohanMabille

proteus/mprans/RANS2P2D.h

@@ -1965,10 +1965,18 @@ namespace proteus
                   ck.gradTrialFromRef(&p_grad_trial_ref.data()[k*nDOF_trial_element*nSpace],jacInv,p_grad_trial);
                   ck_v.gradTrialFromRef(&vel_grad_trial_ref.data()[k*nDOF_v_trial_element*nSpace],jacInv,vel_grad_trial);
 
-                  std::copy_n(p_trial_ref.data() + k*nDOF_trial_element, nDOF_trial_element, p_trial);
-                  std::copy(std::begin(p_grad_trial), std::end(p_grad_trial), std::begin(p_grad_trial_ib));
-                  std::copy_n(vel_trial_ref.data() + k*nDOF_v_trial_element, nDOF_v_trial_element, p_trial);
-                  std::copy(std::begin(vel_grad_trial), std::end(vel_grad_trial), std::begin(vel_grad_trial_ib));
+                  for (int i=0; i < nDOF_trial_element; i++)
+                    {
+                      p_trial[i] = p_trial_ref.data()[k*nDOF_trial_element + i];
+                      p_grad_trial_ib[i*nSpace + 0] = p_grad_trial[i*nSpace+0];
+                      p_grad_trial_ib[i*nSpace + 1] = p_grad_trial[i*nSpace+1];
+                    }
+                  for (int i=0; i < nDOF_v_trial_element; i++)
+                    {
+                      vel_trial[i] = vel_trial_ref.data()[k*nDOF_v_trial_element + i];
+                      vel_grad_trial_ib[i*nSpace + 0] = vel_grad_trial[i*nSpace+0];
+                      vel_grad_trial_ib[i*nSpace + 1] = vel_grad_trial[i*nSpace+1];
+                    }
 
                   if (icase == 0)
                     {