Use true/false instead of 1/0 for boolean options

This is more elegant, and makes it easier to distinguish them from integer
options.

src/DynamicModel.cc

@@ -3124,9 +3124,7 @@ DynamicModel::writeOutput(ostream &output, const string &basename, bool block_de
   /* Say if static and dynamic models differ (because of [static] and [dynamic]
      equation tags) */
   output << modstruct << "static_and_dynamic_models_differ = "
-         << (static_only_equations.size() > 0 ?
-             (julia ? "true" : "1") :
-             (julia ? "false" : "0"))
+         << (static_only_equations.size() > 0 ? "true" :"false")
          << ";" << endl;
 
   vector<int> state_var;

src/ModFile.cc

@@ -889,16 +889,16 @@ ModFile::writeOutputFiles(const string &basename, bool clear_all, bool clear_glo
     mOutputFile << "diary('" << basename << ".log');" << endl;
 
   if (minimal_workspace)
-    mOutputFile << "options_.minimal_workspace = 1;" << endl;
+    mOutputFile << "options_.minimal_workspace = true;" << endl;
 
   if (console)
-    mOutputFile << "options_.console_mode = 1;" << endl
-                << "options_.nodisplay = 1;" << endl;
+    mOutputFile << "options_.console_mode = true;" << endl
+                << "options_.nodisplay = true;" << endl;
   if (nograph)
-    mOutputFile << "options_.nograph = 1;" << endl;
+    mOutputFile << "options_.nograph = true;" << endl;
 
   if (nointeractive)
-    mOutputFile << "options_.nointeractive = 1;" << endl;
+    mOutputFile << "options_.nointeractive = true;" << endl;
 
   if (param_used_with_lead_lag)
     mOutputFile << "M_.parameter_used_with_lead_lag = true;" << endl;
@@ -926,18 +926,18 @@ ModFile::writeOutputFiles(const string &basename, bool clear_all, bool clear_glo
                 << "M_.Correlation_matrix_ME = 1;" << endl;
 
   // May be later modified by a shocks block
-  mOutputFile << "M_.sigma_e_is_diagonal = 1;" << endl;
+  mOutputFile << "M_.sigma_e_is_diagonal = true;" << endl;
 
   // Initialize M_.det_shocks
   mOutputFile << "M_.det_shocks = [];" << endl;
 
-  if (linear == 1)
-    mOutputFile << "options_.linear = 1;" << endl;
+  auto to_matlab_logical = [](bool m) { return m ? "true" : "false"; };
 
-  mOutputFile << "options_.block=" << block << ";" << endl
-              << "options_.bytecode=" << byte_code << ";" << endl
-              << "options_.use_dll=" << use_dll << ";" << endl
-              << "options_.linear_decomposition=" << linear_decomposition << ";" << endl;
+  mOutputFile << "options_.linear = " << to_matlab_logical(linear) << ";" << endl
+              << "options_.block = " << to_matlab_logical(block) << ";" << endl
+              << "options_.bytecode = " << to_matlab_logical(byte_code) << ";" << endl
+              << "options_.use_dll = " << to_matlab_logical(use_dll) << ";" << endl
+              << "options_.linear_decomposition = " << to_matlab_logical(linear_decomposition) << ";" << endl;
 
   if (parallel_local_files.size() > 0)
     {

src/NumericalInitialization.cc

@@ -225,7 +225,7 @@ InitValStatement::writeOutput(ostream &output, const string &basename, bool mini
          << "% INITVAL instructions" << endl
          << "%" << endl;
   // Writing initval block to set initial values for variables
-  output << "options_.initval_file = 0;" << endl;
+  output << "options_.initval_file = false;" << endl;
 
   writeInitValues(output);
 }
@@ -420,7 +420,7 @@ InitvalFileStatement::writeOutput(ostream &output, const string &basename, bool
   output << "%" << endl
          << "% INITVAL_FILE statement" << endl
          << "%" << endl
-         << "options_.initval_file = 1;" << endl
+         << "options_.initval_file = true;" << endl
          << "initvalf('" << filename << "');" << endl;
 }