From cc2722e58cf2cc4787340e1d1579b0932431c5ff Mon Sep 17 00:00:00 2001
From: Simon Gardling <titaniumtown@gmail.com>
Date: Thu, 10 Mar 2022 10:15:52 -0500
Subject: [PATCH] remove dead code

---
 src/function.rs        | 6 ------
 src/function_output.rs | 5 -----
 2 files changed, 11 deletions(-)

diff --git a/src/function.rs b/src/function.rs
index 95b2efc..989aa0c 100644
--- a/src/function.rs
+++ b/src/function.rs
@@ -77,7 +77,6 @@ impl FunctionEntry {
 			self.func_str = func_str.clone();
 			self.function = BackingFunction::new(&func_str);
 			self.output.invalidate_whole();
-			self.output.invalidate_points();
 		}
 
 		self.derivative = derivative;
@@ -153,7 +152,6 @@ impl FunctionEntry {
 
 		let step = (self.integral_min_x - self.integral_max_x).abs() / (self.integral_num as f64);
 
-		let mut last_positive: Option<bool> = None;
 		let mut area: f64 = 0.0;
 		let data2: Vec<(f64, f64)> = (0..self.integral_num)
 			.map(|e| {
@@ -174,10 +172,6 @@ impl FunctionEntry {
 					}
 				};
 
-				if last_positive.is_none() {
-					last_positive = Some(x.is_sign_positive());
-				}
-
 				if !y.is_nan() {
 					area += y * step;
 				}
diff --git a/src/function_output.rs b/src/function_output.rs
index 0605989..edbd725 100644
--- a/src/function_output.rs
+++ b/src/function_output.rs
@@ -42,11 +42,6 @@ impl FunctionOutput {
 
 	pub fn invalidate_derivative(&mut self) { self.derivative = None; }
 
-	pub fn invalidate_points(&mut self) {
-		self.extrema = None;
-		self.roots = None;
-	}
-
 	pub fn display(
 		&self, plot_ui: &mut PlotUi, func_str: &str, derivative_str: &str, step: f64,
 		derivative_enabled: bool,