Refactor: remove hsolver base class from module_hsolver (#5093)

* remoe hsolver class

* change wfc_basis to const value

* fix build bug

Author: haozhihan

source/module_hsolver/hsolver.h

@@ -14,17 +14,6 @@
 namespace hsolver
 {
 
-template <typename T, typename Device = base_device::DEVICE_CPU>
-class HSolver
-{
-  private:
-    using Real = typename GetTypeReal<T>::type;
-
-  public:
-    HSolver() {};
-};
-
-
 double set_diagethr_ks(const std::string basis_type,
                        const std::string esolver_type,
                        const std::string calculation_in,

source/module_hsolver/hsolver_pw.h

@@ -71,8 +71,8 @@ class HSolverPW
 
     void output_iterInfo();
 
-    ModulePW::PW_Basis_K* wfc_basis = nullptr;
-    wavefunc* pwf = nullptr;
+    ModulePW::PW_Basis_K* wfc_basis;
+    wavefunc* pwf; // only for diago_PAO_in_pw_k2 func
 
     const std::string calculation_type;
     const std::string basis_type;

source/module_hsolver/test/test_hsolver.cpp

@@ -8,8 +8,8 @@
 
 #include <module_base/macros.h>
 
-template class hsolver::HSolver<std::complex<float>, base_device::DEVICE_CPU>;
-template class hsolver::HSolver<std::complex<double>, base_device::DEVICE_CPU>;
+// template class hsolver::HSolver<std::complex<float>, base_device::DEVICE_CPU>;
+// template class hsolver::HSolver<std::complex<double>, base_device::DEVICE_CPU>;
 
 /************************************************
  *  unit test of HSolver base class
@@ -34,10 +34,10 @@ template class hsolver::HSolver<std::complex<double>, base_device::DEVICE_CPU>;
 class TestHSolver : public ::testing::Test
 {
 public:
-  hsolver::HSolver<std::complex<float>, base_device::DEVICE_CPU> hs_cf;
-  hsolver::HSolver<std::complex<double>, base_device::DEVICE_CPU> hs_cd;
-  hsolver::HSolver<float, base_device::DEVICE_CPU> hs_f;
-  hsolver::HSolver<double, base_device::DEVICE_CPU> hs_d;
+  // hsolver::HSolver<std::complex<float>, base_device::DEVICE_CPU> hs_cf;
+  // hsolver::HSolver<std::complex<double>, base_device::DEVICE_CPU> hs_cd;
+  // hsolver::HSolver<float, base_device::DEVICE_CPU> hs_f;
+  // hsolver::HSolver<double, base_device::DEVICE_CPU> hs_d;
 
   hamilt::Hamilt<std::complex<double>> hamilt_test_cd;
   hamilt::Hamilt<std::complex<float>> hamilt_test_cf;