cleanup, trial and error

.vscode/c_cpp_properties.json

@@ -17,7 +17,7 @@
                     "${workspaceFolder}"
                 ]
             },
-            "intelliSenseMode": "linux-gcc-arm"
+            "intelliSenseMode": "windows-gcc-x64"
         }
     ],
     "version": 4

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "math.h": "c"
+    }
+}