dot, dotc: add customization points and tests kokkos#96

Author: fnrizzi

Diff for: examples/kokkos-based/dot_kokkos.cpp

@@ -4,7 +4,6 @@
 
 int main(int argc, char* argv[])
 {
-<<<<<<< HEAD
   std::cout << "dot example: calling kokkos-kernels" << std::endl;
 
   std::size_t N = 50;
@@ -22,28 +21,11 @@ int main(int argc, char* argv[])
     mdspan_type a(a_ptr,N);
     mdspan_type b(b_ptr,N);
     for(std::size_t i=0; i<a.extent(0); i++){
-=======
-  std::cout << "running dot example calling custom kokkos" << std::endl;
-  int N = 50;
-  Kokkos::initialize(argc,argv);
-  {
-    Kokkos::View<double*> a_view("A",N);
-    Kokkos::View<double*> b_view("B",N);
-    double* a_ptr = a_view.data();
-    double* b_ptr = b_view.data();
-
-    using dyn_1d_ext_type = std::experimental::extents<std::experimental::dynamic_extent>;
-    using mdspan_type  = std::experimental::mdspan<double, dyn_1d_ext_type>;
-    mdspan_type a(a_ptr,N);
-    mdspan_type b(b_ptr,N);
-    for(int i=0; i<a.extent(0); i++){
->>>>>>> dot: customization point to Kokkos-kernels and example
       a(i) = i;
       b(i) = i;
     }
 
     namespace stdla = std::experimental::linalg;
-<<<<<<< HEAD
     const value_type init_value(2.0);
 
     // This goes to the base implementation
@@ -53,18 +35,6 @@ int main(int argc, char* argv[])
     // This forwards to KokkosKernels
     const auto res_kk = stdla::dot(KokkosKernelsSTD::kokkos_exec<>(), a, b, init_value);
     printf("Kokkos result = %lf\n", res_kk);
-=======
-    const double init_value = 2.0;
-
-    // This goes to the base implementation
-    const auto res_seq = stdla::dot(std::execution::seq, a, b, init_value);
-
-    // This forwards to KokkosKernels
-    auto res_kk = stdla::dot(KokkosKernelsSTD::kokkos_exec<>(), a, b, init_value);
-
-    printf("Kokkos result = %lf\n", res_kk);
-    printf("Seq result    = %lf\n", res_seq);
->>>>>>> dot: customization point to Kokkos-kernels and example
   }
   Kokkos::finalize();
 }

Diff for: include/experimental/__p1673_bits/blas1_dot.hpp

@@ -78,12 +78,6 @@ struct is_custom_dot_avail<
 
 } // end anonymous namespace
 
-
-// ------------
-// PUBLIC API:
-// ------------
-
-// dot, with init value
 template<class ExecutionPolicy,
          class ElementType1,
          extents<>::size_type ext1,