Pass model name

check/TestNames.cpp

@@ -118,3 +118,16 @@ TEST_CASE("highs-names", "[highs_names]") {
 
   std::remove(solution_file.c_str());
 }
+
+TEST_CASE("highs-model-name", "[model_names]") {
+
+  Highs highs;
+  const HighsLp& lp = highs.getLp();
+
+  std::string name = lp.model_name_;
+  REQUIRE(name == "");
+
+  highs.passModelName("new_name");
+  name = lp.model_name_;
+  REQUIRE(name == "new_name");
+}

src/Highs.h

@@ -160,6 +160,11 @@ class Highs {
    */
   HighsStatus passRowName(const HighsInt row, const std::string& name);
 
+  /**
+   * @brief Pass a model name to the incumbent model
+   */
+  HighsStatus passModelName(const std::string& name);
+
   /**
    * @brief Read in a model
    */

src/interfaces/highs_c_api.cpp

@@ -301,6 +301,10 @@ HighsInt Highs_passColName(const void* highs, const HighsInt col,
   return (HighsInt)((Highs*)highs)->passColName(col, std::string(name));
 }
 
+HighsInt Highs_passModelName(const void* highs, const char* name) {
+  return (HighsInt)((Highs*)highs)->passModelName(std::string(name));
+}
+
 HighsInt Highs_readOptions(const void* highs, const char* filename) {
   return (HighsInt)((Highs*)highs)->readOptions(filename);
 }

src/interfaces/highs_c_api.h

@@ -581,6 +581,16 @@ HighsInt Highs_passRowName(const void* highs, const HighsInt row,
 HighsInt Highs_passColName(const void* highs, const HighsInt col,
                            const char* name);
 
+/**
+ * Pass the name of the model.
+ *
+ * @param highs A pointer to the Highs instance.
+ * @param name  The name of the model.
+ *
+ * @returns A `kHighsStatus` constant indicating whether the call succeeded.
+ */
+HighsInt Highs_passModelName(const void* highs, const char* name);
+
 /**
  * Read the option values from file.
  *

src/lp_data/Highs.cpp

@@ -618,6 +618,16 @@ HighsStatus Highs::passRowName(const HighsInt row, const std::string& name) {
   return HighsStatus::kOk;
 }
 
+HighsStatus Highs::passModelName(const std::string& name) {
+  if (int(name.length()) <= 0) {
+    highsLogUser(options_.log_options, HighsLogType::kError,
+                 "Cannot define empty model names\n");
+    return HighsStatus::kError;
+  }
+  this->model_.lp_.model_name_ = name;
+  return HighsStatus::kOk;
+}
+
 HighsStatus Highs::readModel(const std::string& filename) {
   this->logHeader();
   HighsStatus return_status = HighsStatus::kOk;