Merge branch 'param_abs_test_fail' into 'master'

The paramAbsNode test should pass

See merge request tpurcell/cpp_sisso!55

tests/googletest/feature_creation/parameterization/test_abs_node.cc

@@ -29,7 +29,7 @@ protected:
     void SetUp() override
     {
         nlopt_wrapper::MAX_PARAM_DEPTH = 2;
-
+        nlopt::srand(13);
         _task_sizes_train = {900};
         _task_sizes_test = {100};
 
@@ -38,26 +38,22 @@ protected:
         std::vector<double> value_1(_task_sizes_train[0], 0.0);
         std::vector<double> test_value_1(_task_sizes_test[0], 0.0);
 
-        std::default_random_engine generator(0);
-        nlopt::srand(42);
-        std::uniform_real_distribution<double> distribution_feats(-50.0, 50.0);
-        std::uniform_real_distribution<double> distribution_params(-2.00, 2.00);
 
         for (int ii = 0; ii < _task_sizes_train[0]; ++ii)
         {
-            value_1[ii] = std::exp(distribution_feats(generator));
+            value_1[ii] = std::exp(ii / 900.0 * 100.0 - 50.0);
         }
 
         for (int ii = 0; ii < _task_sizes_test[0]; ++ii)
         {
-            test_value_1[ii] = std::exp(distribution_feats(generator));
+            test_value_1[ii] = std::exp(ii / 103.0 * 100.0 - 50.0);
         }
 
         _feat_1 = std::make_shared<FeatureNode>(0, "A", value_1, test_value_1, Unit("m^3"));
         node_ptr feat_2 = std::make_shared<LogNode>(_feat_1, 1);
         _phi = {_feat_1, feat_2};
 
-        _a = distribution_params(generator);
+        _a = -3.5;
         _alpha = 1.0;
 
         _prop = std::vector<double>(_task_sizes_train[0], 0.0);