1 files changed, 17 insertions, 0 deletions
diff --git a/src/function.rs b/src/function.rs
new file mode 100644
index 0000000..547ae0e
--- /dev/null
+++ b/src/function.rs
@@ -0,0 +1,17 @@
+pub struct FunctionArgument {
+    args : Vec<f64>,
+}
+
+impl FunctionArgument {
+    pub fn new(args: Vec<f64>) -> Self {
+        Self { args }
+    }
+
+    pub fn get(&self, i : usize) -> f64 {
+        self.args[i]
+    }
+}
+
+pub trait Function {
+    fn eval(&self, args: FunctionArgument) -> f64;
+}