Initial commit. Basic structure in place, need to implement logic.

src/kernel/constant.rs

@@ -0,0 +1,13 @@
+use super::Kernel;
+
+pub struct Constant {
+    var: f64,
+}
+
+impl Constant {
+    pub fn new(var: f64) -> Self {
+        Constant { var }
+    }
+}
+
+impl Kernel for Constant {}