Fix the wrong HF Coulomb at nspin=2 (deepmodeling#6672)

* fix the wrong HF Coulomb at nspin=2

* update the test result

* add the unit for parameter abs_vavelen_range

Author: maki49

docs/advanced/input_files/input-main.md

@@ -4291,6 +4291,7 @@ Currently supported: `RPA`, `LDA`, `PBE`, `HSE`, `HF`.
 - **Type**: Real Real
 - **Description**: The range of the wavelength for the absorption spectrum calculation.
 - **Default**: 0.0 0.0
+- **Unit**: nm
 
 ### out_wfc_lr
 

source/module_ri/Exx_LRI.hpp

@@ -78,8 +78,7 @@ void Exx_LRI<Tdata>::init(const MPI_Comm &mpi_comm_in,
 			case Conv_Coulomb_Pot_K::Ccp_Type::Hf:
 			{
 				// 4/3 * pi * Rcut^3 = V_{supercell} = V_{unitcell} * Nk
-				const int nspin0 = (PARAM.inp.nspin==2) ? 2 : 1;
-				const double hf_Rcut = std::pow(0.75 * this->p_kv->get_nkstot_full()/nspin0 * omega / (ModuleBase::PI), 1.0/3.0);
+                const double hf_Rcut = std::pow(0.75 * this->p_kv->get_nkstot_full() * omega / (ModuleBase::PI), 1.0 / 3.0);
 				return {{"hf_Rcut", hf_Rcut}};
 			}
 			case Conv_Coulomb_Pot_K::Ccp_Type::Erfc:

tests/integrate/392_NO_GO_LR_HF/result.ref

@@ -1 +1 @@
-totexcitationenergyref 3.067058
+totexcitationenergyref 3.067051

tests/integrate/393_NO_GO_ULR_HF/result.ref

@@ -1 +1 @@
-totexcitationenergyref 2.187535
+totexcitationenergyref 2.187525