change input parameters

Author: Fei Yang

source/source_io/read_input_item_relax.cpp

@@ -14,7 +14,13 @@ void ReadInput::item_relax()
         item.annotation = "cg; bfgs; sd; cg; cg_bfgs;";
         read_sync_string(input.relax_method);
         item.read_value = [](const Input_Item& item, Parameter& para) {
-        if(item.get_size()==1)
+        if(item.get_size()==0)
+        {
+            para.input.relax_method_param.method="cg";
+            para.input.relax_method = para.input.relax_method_param.method;
+            para.input.relax_method_param.param = "1"; 
+        }
+        else if(item.get_size()==1)
         {
             para.input.relax_method_param.method=item.str_values[0];
             para.input.relax_method = para.input.relax_method_param.method;
@@ -27,13 +33,6 @@ void ReadInput::item_relax()
             para.input.relax_method_param.param = item.str_values[1]; 
         }
         };
-
-        // std::istringstream iss(item.str_values[0]);
-        // iss >> para.input.relax_method_param.method;
-        // if (!(iss >> para.input.relax_method_param.param)) {
-        //     std::cout << "No parameter provided for relax_method_param.param, default to 1" << std::endl;
-        // para.input.relax_method_param.param = "1";        
-        // }
         item.check_value = [](const Input_Item& item, const Parameter& para) {
         const std::vector<std::string> relax_methods = {"cg", "sd", "cg_bfgs","bfgs","lbfgs"};
         if (std::find(relax_methods.begin(), relax_methods.end(), para.input.relax_method_param.method) == relax_methods.end()) {