Fix compilation error: use vector size check instead of non-existent count() method

Co-authored-by: ncdorn <126125269+ncdorn@users.noreply.github.com>

Author: Copilot

src/model/ChamberElastanceInductor.cpp

@@ -56,9 +56,9 @@ void ChamberElastanceInductor::get_elastance_values(
 void ChamberElastanceInductor::initialize_activation_function(
     std::vector<double>& parameters) {
   // Check if activation_type parameter is provided (optional parameter)
-  int activation_type_int = 0;  // Default to HALF_COSINE
-  if (global_param_ids.count(ParamId::ACTIVATION_TYPE) > 0) {
-    activation_type_int = static_cast<int>(
+  // Defaults to HALF_COSINE if not provided
+  if (global_param_ids.size() > ParamId::ACTIVATION_TYPE) {
+    int activation_type_int = static_cast<int>(
         parameters[global_param_ids[ParamId::ACTIVATION_TYPE]]);
     activation_params_.type = static_cast<ActivationType>(activation_type_int);
   }

src/model/ChamberElastanceInductor.h

@@ -155,7 +155,7 @@ class ChamberElastanceInductor : public Block {
                {"Vrd", InputParameter()},
                {"Vrs", InputParameter()},
                {"Impedance", InputParameter()},
-               {"activation_type", InputParameter(false)}}) {}
+               {"activation_type", InputParameter(true, false, true, 0.0)}}) {}
 
   /**
    * @brief Local IDs of the parameters

src/model/LinearElastanceChamber.cpp

@@ -52,7 +52,7 @@ void LinearElastanceChamber::get_elastance_values(
 void LinearElastanceChamber::initialize_activation_function(
     std::vector<double>& parameters) {
   // Check if activation_type parameter is provided (required parameter)
-  if (global_param_ids.count(ParamId::ACTIVATION_TYPE) == 0) {
+  if (global_param_ids.size() <= ParamId::ACTIVATION_TYPE) {
     throw std::runtime_error(
         "LinearElastanceChamber: activation_type parameter is required");
   }