nix + web stuff

.rustfmt.toml

@@ -1,4 +0,0 @@
-edition = "2021"
-fn_params_layout = "Compressed"
-fn_single_line = true
-hard_tabs = true

Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "ytbn_graphing_software"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
+rust-version = "1.88"
 license = "AGPL-3.0"
 repository = "https://github.com/Titaniumtown/YTBN-Graphing-Software"
 description = "Crossplatform (and web-compatible) graphing calculator"
@@ -33,62 +34,72 @@ strip = false
 
 [dependencies]
 parsing = { path = "./parsing" }
-eframe = { git = "https://github.com/titaniumtown/egui.git", default-features = false, features = [
+eframe = { path = "../simon-egui/crates/eframe", default-features = false, features = [
     "glow",
+    "x11",
 ] }
-egui = { git = "https://github.com/titaniumtown/egui.git", default-features = false, features = [
+egui = { path = "../simon-egui/crates/egui", default-features = false, features = [
     "serde",
 ] }
-epaint = { git = "https://github.com/titaniumtown/egui.git", default-features = false , features = [
+epaint = { path = "../simon-egui/crates/epaint", default-features = false, features = [
     "bytemuck",
 ] }
-emath = { git = "https://github.com/titaniumtown/egui.git", default-features = false }
-egui_plot = { git = "https://github.com/titaniumtown/egui.git", default-features = false }
+emath = { path = "../simon-egui/crates/emath", default-features = false }
+egui_plot = { git = "https://github.com/emilk/egui_plot.git", default-features = false }
 
-
-
-shadow-rs = { version = "0.12", default-features = false }
+shadow-rs = { version = "0.38", default-features = false }
 const_format = { version = "0.2", default-features = false, features = ["fmt"] }
 cfg-if = "1"
-ruzstd = "0.5"
+ruzstd = "0.8"
 tracing = "0.1"
-itertools = "0.10"
+itertools = "0.14"
 static_assertions = "1.1"
 bincode = "1.3"
 serde = "1"
+log = "0.4"
 
-[dev-dependencies]
-benchmarks = { path = "./benchmarks" }
+# Note: benchmarks are in a separate crate - run with:
+# cd benchmarks && cargo bench
 
 [build-dependencies]
-shadow-rs = "0.12"
-epaint = { git = "https://github.com/titaniumtown/egui.git", default-features = false, features = [
+shadow-rs = "0.38"
+epaint = { path = "../simon-egui/crates/epaint", default-features = false, features = [
     "bytemuck",
 ] }
-egui = { git = "https://github.com/titaniumtown/egui.git", default-features = false, features = [
+egui = { path = "../simon-egui/crates/egui", default-features = false, features = [
     "serde",
 ] }
 bincode = "1.3"
 serde = "1"
 serde_json = "1"
-zstd = { version = "0.11", default-features = false, features = ["pkg-config"] }
-run_script = "0.9"
+zstd = { version = "0.13", default-features = false }
+run_script = "0.10"
 json5 = "0.4"
-itertools = "0.10"
+itertools = "0.14"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-instant = "0.1"
+web-time = "1.1"
 tracing-subscriber = "0.3"
-getrandom = { version = "0.2" }
+getrandom = { version = "0.3" }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
-instant = { version = "0.1", features = ["wasm-bindgen"] }
-lol_alloc = "0.4.0"
+web-time = "1.1"
+lol_alloc = "0.4"
 wasm-bindgen = { version = "0.2", default-features = false, features = ["std"] }
 web-sys = "0.3"
 tracing-wasm = "0.2"
-getrandom = { version = "0.2", features = ["js"] }
-wasm-bindgen-futures = "0.4.34"
+getrandom = { version = "0.3", features = ["wasm_js"] }
+wasm-bindgen-futures = "0.4"
 
 [package.metadata.cargo-all-features]
 skip_optional_dependencies = true #don't test optional dependencies, only features
+
+[patch.crates-io]
+egui = { path = "../simon-egui/crates/egui" }
+epaint = { path = "../simon-egui/crates/epaint" }
+emath = { path = "../simon-egui/crates/emath" }
+ecolor = { path = "../simon-egui/crates/ecolor" }
+eframe = { path = "../simon-egui/crates/eframe" }
+egui-winit = { path = "../simon-egui/crates/egui-winit" }
+egui_glow = { path = "../simon-egui/crates/egui_glow" }
+egui-wgpu = { path = "../simon-egui/crates/egui-wgpu" }

TODO.md

@@ -1,14 +1,8 @@
 ## TODO:
 1. Function management
 	- Integrals between functions (too hard to implement, maybe will shelve)
-	- Display intersection between functions (would have to rewrite a lot of the function plotting handling)
-	- [Drag and drop support](https://github.com/emilk/egui/discussions/1530) in the UI to re-order functions
-	- Hide/disable functions
 	- Prevent user from making too many function entries
-	- Display function errors as tooltips or a warning box (not preventing the display of the graph)
-	- Clone functions
 2. Smart display of graph
-	- Display of intersections between functions
 3. Allow constants in min/max integral input (like pi or euler's number)
 4. Sliding values for functions (like a user-interactable slider that adjusts a variable in the function, like desmos)
 5. Fix integral display

benchmarks/Cargo.toml

@@ -1,13 +1,18 @@
 [package]
 name = "benchmarks"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
+rust-version = "1.88"
 license = "AGPL-3.0"
 
 [lib]
+bench = false
+
+[[bench]]
+name = "split_function"
+harness = false
 
 [dependencies]
-pprof = { version = "0.9", features = ["flamegraph"] }
-criterion = "0.3"
-criterion-macro = "0.3"
+pprof = { version = "0.14", features = ["flamegraph"] }
+criterion = { version = "0.5", features = ["html_reports"] }
 parsing = { path = "../parsing" }

benchmarks/benches/split_function.rs

@@ -0,0 +1,46 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+use parsing::split_function_chars;
+use std::time::Duration;
+
+fn custom_criterion() -> Criterion {
+	Criterion::default()
+		.warm_up_time(Duration::from_millis(250))
+		.sample_size(1000)
+}
+
+fn mutli_split_function(c: &mut Criterion) {
+	let data_chars = vec![
+		"sin(x)cos(x)",
+		"x^2",
+		"2x",
+		"log10(x)",
+		"E^x",
+		"xxxxx",
+		"xsin(x)",
+		"(2x+1)(3x+1)",
+		"x**2",
+		"pipipipipipix",
+		"pi(2x+1)",
+		"(2x+1)pi",
+	]
+	.iter()
+	.map(|a| a.chars().collect::<Vec<char>>())
+	.collect::<Vec<Vec<char>>>();
+
+	let mut group = c.benchmark_group("split_function");
+	for entry in data_chars {
+		group.bench_function(entry.iter().collect::<String>(), |b| {
+			b.iter(|| {
+				split_function_chars(&entry, parsing::SplitType::Multiplication);
+			})
+		});
+	}
+	group.finish();
+}
+
+criterion_group! {
+	name = benches;
+	config = custom_criterion();
+	targets = mutli_split_function
+}
+criterion_main!(benches);

benchmarks/src/lib.rs

@@ -1,26 +1,18 @@
-#![feature(custom_test_frameworks)]
-#![test_runner(criterion::runner)]
+//! Benchmarks library - profiler utilities for flamegraphs
 
-#[allow(unused_imports)]
-use parsing::split_function_chars;
-
-#[allow(unused_imports)]
-use std::time::Duration;
 use std::{fs::File, os::raw::c_int, path::Path};
 
 use criterion::profiler::Profiler;
-#[allow(unused_imports)]
-use criterion::{BenchmarkId, Criterion};
-use criterion_macro::criterion;
 use pprof::ProfilerGuard;
 
+/// Flamegraph profiler for criterion benchmarks
 pub struct FlamegraphProfiler<'a> {
 	frequency: c_int,
 	active_profiler: Option<ProfilerGuard<'a>>,
 }
 
 impl<'a> FlamegraphProfiler<'a> {
-	#[allow(dead_code)]
+	/// Create a new flamegraph profiler with the given sampling frequency
 	pub fn new(frequency: c_int) -> Self {
 		FlamegraphProfiler {
 			frequency,
@@ -29,7 +21,7 @@ impl<'a> FlamegraphProfiler<'a> {
 	}
 }
 
-impl<'a> Profiler for FlamegraphProfiler<'a> {
+impl Profiler for FlamegraphProfiler<'_> {
 	fn start_profiling(&mut self, _benchmark_id: &str, _benchmark_dir: &Path) {
 		self.active_profiler = Some(ProfilerGuard::new(self.frequency).unwrap());
 	}
@@ -49,57 +41,3 @@ impl<'a> Profiler for FlamegraphProfiler<'a> {
 		}
 	}
 }
-
-#[allow(dead_code)] // this infact IS used by benchmarks
-fn custom_criterion() -> Criterion {
-	Criterion::default()
-		.warm_up_time(Duration::from_millis(250))
-		.sample_size(1000)
-}
-
-#[allow(dead_code)] // this infact IS used by benchmarks
-fn custom_criterion_flamegraph() -> Criterion {
-	custom_criterion().with_profiler(FlamegraphProfiler::new(100))
-}
-
-#[criterion(custom_criterion())]
-fn mutli_split_function(c: &mut Criterion) {
-	let data_chars = vec![
-		"sin(x)cos(x)",
-		"x^2",
-		"2x",
-		"log10(x)",
-		"E^x",
-		"xxxxx",
-		"xsin(x)",
-		"(2x+1)(3x+1)",
-		"x**2",
-		"pipipipipipix",
-		"pi(2x+1)",
-		"(2x+1)pi",
-	]
-	.iter()
-	.map(|a| a.chars().collect::<Vec<char>>())
-	.collect::<Vec<Vec<char>>>();
-
-	let mut group = c.benchmark_group("split_function");
-	for entry in data_chars {
-		group.bench_function(entry.iter().collect::<String>(), |b| {
-			b.iter(|| {
-				split_function_chars(&entry, parsing::suggestions::SplitType::Multiplication);
-			})
-		});
-	}
-	group.finish();
-}
-
-// #[criterion(custom_criterion_flamegraph())]
-// fn single_split_function(c: &mut Criterion) {
-// 	let data_chars = "(2x+1)(3x+1)".chars().collect::<Vec<char>>();
-
-// 	c.bench_function("split_function", |b| {
-// 		b.iter(|| {
-// 			split_function_chars(&data_chars);
-// 		});
-// 	});
-// }

build.rs

@@ -4,11 +4,12 @@ use std::{
     fs::File,
     io::{BufWriter, Write},
     path::Path,
+    sync::Arc,
 };
 
 use epaint::{
-	text::{FontData, FontDefinitions, FontTweak},
     FontFamily,
+    text::{FontData, FontDefinitions, FontTweak},
 };
 
 use run_script::ScriptOptions;
@@ -72,7 +73,9 @@ fn main() {
     println!("cargo:rerun-if-changed=.git/logs/HEAD");
     println!("cargo:rerun-if-changed=assets/*");
 
-	shadow_rs::new().expect("Could not initialize shadow_rs");
+    shadow_rs::ShadowBuilder::builder()
+        .build()
+        .expect("Could not initialize shadow_rs");
 
     let mut main_chars: Vec<char> =
 		b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzsu0123456789?.,!(){}[]-_=+-/<>'\\ :^*`@#$%&|~;"
@@ -104,38 +107,44 @@ fn main() {
         font_data: BTreeMap::from([
             (
                 "Ubuntu-Light".to_owned(),
-				FontData::from_owned(
+                Arc::new(FontData::from_owned(
                     font_stripper(
                         "Ubuntu-Light.ttf",
                         "ubuntu-light.ttf",
                         [main_chars, vec!['∫']].concat(),
                     )
                     .unwrap(),
-				),
+                )),
             ),
             (
                 "NotoEmoji-Regular".to_owned(),
-				FontData::from_owned(
+                Arc::new(FontData::from_owned(
                     font_stripper(
                         "NotoEmoji-Regular.ttf",
                         "noto-emoji.ttf",
                         vec!['🌞', '🌙', '✖'],
                     )
                     .unwrap(),
-				),
+                )),
             ),
             (
                 "emoji-icon-font".to_owned(),
+                Arc::new(
                     FontData::from_owned(
-					font_stripper("emoji-icon-font.ttf", "emoji-icon.ttf", vec!['⚙']).unwrap(),
+                        font_stripper(
+                            "emoji-icon-font.ttf",
+                            "emoji-icon.ttf",
+                            vec!['⚙', '⎘', '👁', '○', '⬆', '⬇', '⚠'],
+                        )
+                        .unwrap(),
                     )
                     .tweak(FontTweak {
                         scale: 0.8,
                         y_offset_factor: 0.07,
                         y_offset: 0.0,
-					baseline_offset_factor: -0.0333,
                     }),
                 ),
+            ),
         ]),
         families: BTreeMap::from([
             (

build.sh

@@ -1,76 +0,0 @@
-#!/bin/bash
-set -e
-
-rm -fr tmp | true
-rm -fr pkg | true
-
-# cargo test
-
-export RUSTFLAGS="--cfg=web_sys_unstable_apis"
-
-if test "$1" == "" || test "$1" == "release"; then
-    time cargo build --release --target wasm32-unknown-unknown -Z build-std=core,compiler_builtins,alloc,std,panic_abort,panic_unwind,proc_macro,unwind -Z build-std-features=panic_immediate_abort --lib --timings
-    llvm-strip -s target/wasm32-unknown-unknown/release/ytbn_graphing_software.wasm
-    export TYPE="release"
-    elif test "$1" == "debug"; then
-    time cargo build --target wasm32-unknown-unknown -Z build-std=core,compiler_builtins,alloc,std,panic_abort,panic_unwind,proc_macro,unwind -Z build-std-features=panic-unwind --lib
-    export TYPE="debug"
-else
-    echo "ERROR: build.sh, argument invalid"
-    exit 1
-fi
-
-pre_size=$(du -sb target/wasm32-unknown-unknown/${TYPE}/ytbn_graphing_software.wasm | awk '{ print $1 }')
-echo "compiled size: $pre_size"
-
-wasm-bindgen target/wasm32-unknown-unknown/${TYPE}/ytbn_graphing_software.wasm --out-dir pkg --target web --no-typescript
-
-if test "$TYPE" == "release"; then
-   echo "running wasm-opt..."
-   time wasm-opt --converge -Oz --code-folding --const-hoisting --coalesce-locals-learning --vacuum --merge-locals --merge-blocks --fast-math --precompute --rse --low-memory-unused --once-reduction --optimize-instructions --licm --intrinsic-lowering \
-   --dce --dae-optimizing --inlining-optimizing --strip-debug \
-   -o pkg/ytbn_graphing_software_bg_2.wasm pkg/ytbn_graphing_software_bg.wasm
-   mv pkg/ytbn_graphing_software_bg_2.wasm pkg/ytbn_graphing_software_bg.wasm
-fi
-
-mkdir tmp
-cp -r pkg/ytbn_graphing_software_bg.wasm tmp/
-
-sed -i 's/fatal: true/fatal: false/g' pkg/ytbn_graphing_software.js
-
-sed -i "s/TextEncoder('utf-8')/TextEncoder('utf-8', { ignoreBOM: true, fatal: false })/g" pkg/ytbn_graphing_software.js
-
-#minify pkg/ytbn_graphing_software.js > tmp/ytbn_graphing_software.js
-
-cp www/* tmp/
-cp assets/logo.svg tmp/
-#minify www/index.html > tmp/index.html
-#minify www/sw.js > tmp/sw.js
-cp www/index.html www/sw.js pkg/ytbn_graphing_software.js tmp/
-
-
-wasm_sum=($(md5sum tmp/ytbn_graphing_software_bg.wasm))
-js_sum=($(md5sum tmp/ytbn_graphing_software.js))
-sum=($(echo "$wasm_sum $js_sum" | md5sum))
-
-echo "sum: $sum"
-
-new_wasm_name="${sum}.wasm"
-new_js_name="${sum}.js"
-
-
-mv tmp/ytbn_graphing_software_bg.wasm "tmp/${new_wasm_name}"
-mv tmp/ytbn_graphing_software.js "tmp/${new_js_name}"
-
-
-sed -i "s/ytbn_graphing_software_bg.wasm/${new_wasm_name}/g" tmp/*.*
-
-sed -i "s/ytbn_graphing_software.js/${new_js_name}/g" tmp/*.*
-
-
-
-new_size=$(du -b tmp/${new_wasm_name} | awk '{ print $1 }')
-diff=$(echo "scale=5 ; $new_size / $pre_size" | bc)
-percent=$(echo "scale=5 ; (1-$diff)*100" | bc)
-echo "Total size: $(du -sb tmp)"
-echo "Binary size: $new_size reduced: $percent%"

flake.lock

@@ -0,0 +1,100 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1764517877,
+        "narHash": "sha256-pp3uT4hHijIC8JUK5MEqeAWmParJrgBVzHLNfJDZxg4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "2d293cbfa5a793b4c50d17c05ef9e385b90edf6c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay",
+        "simon-egui": "simon-egui"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1764729618,
+        "narHash": "sha256-z4RA80HCWv2los1KD346c+PwNPzMl79qgl7bCVgz8X0=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "52764074a85145d5001bf0aa30cb71936e9ad5b8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "simon-egui": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1764730109,
+        "narHash": "sha256-vNETC0oq6tKJKF8KOGQKKIWRom38m0RwGgi3MPBrRx8=",
+        "owner": "Titaniumtown",
+        "repo": "egui",
+        "rev": "b63c21d70150f1b414370f0f9a8af56e886662f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Titaniumtown",
+        "repo": "egui",
+        "rev": "b63c21d70150f1b414370f0f9a8af56e886662f4",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,225 @@
+{
+  description = "YTBN Graphing Software - Web-compatible graphing calculator";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    simon-egui = {
+      url = "github:Titaniumtown/egui/b63c21d70150f1b414370f0f9a8af56e886662f4";
+      flake = false;
+    };
+  };
+
+  outputs = { self, nixpkgs, flake-utils, rust-overlay, simon-egui }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs {
+          inherit system overlays;
+        };
+
+        # Use nightly rust with wasm32 target
+        rustToolchain = pkgs.rust-bin.nightly."2025-05-01".default.override {
+          targets = [ "wasm32-unknown-unknown" ];
+        };
+
+        rustPlatform = pkgs.makeRustPlatform {
+          cargo = rustToolchain;
+          rustc = rustToolchain;
+        };
+
+        # Build wasm-bindgen-cli matching the version in Cargo.lock (0.2.106)
+        wasm-bindgen-cli = rustPlatform.buildRustPackage rec {
+          pname = "wasm-bindgen-cli";
+          version = "0.2.106";
+
+          src = pkgs.fetchCrate {
+            inherit pname version;
+            hash = "sha256-M6WuGl7EruNopHZbqBpucu4RWz44/MSdv6f0zkYw+44=";
+          };
+
+          cargoHash = "sha256-ElDatyOwdKwHg3bNH/1pcxKI7LXkhsotlDPQjiLHBwA=";
+
+          nativeBuildInputs = [ pkgs.pkg-config ];
+          buildInputs = [ pkgs.openssl ] ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
+            pkgs.curl
+            pkgs.darwin.apple_sdk.frameworks.Security
+          ];
+
+          # Tests require network access
+          doCheck = false;
+        };
+
+        # Create a combined source with the main project and dependencies
+        combinedSrc = pkgs.stdenv.mkDerivation {
+          name = "ytbn-combined-src";
+          phases = [ "installPhase" ];
+          installPhase = ''
+            mkdir -p $out/integral_site_rust
+            mkdir -p $out/simon-egui
+
+            cp -r ${./.}/* $out/integral_site_rust/
+            cp -r ${simon-egui}/* $out/simon-egui/
+
+            chmod -R u+w $out
+          '';
+        };
+
+        # Build the wasm library using rustPlatform
+        wasmLib = rustPlatform.buildRustPackage {
+          pname = "ytbn-graphing-software-wasm";
+          version = "0.1.0";
+
+          src = combinedSrc;
+          sourceRoot = "${combinedSrc.name}/integral_site_rust";
+
+          cargoLock = {
+            lockFile = ./Cargo.lock;
+            outputHashes = {
+              "egui_plot-0.34.0" = "sha256-lk0yeljsvkHzF0eLD5llQ+05DycPqG2jGzhBvQ0X6Qw=";
+            };
+          };
+
+          nativeBuildInputs = with pkgs; [
+            python3Packages.fonttools
+            pkg-config
+            clang
+          ];
+
+          buildInputs = with pkgs; [
+            openssl
+            zstd
+          ];
+
+          buildPhase = ''
+            runHook preBuild
+
+            export HOME=$TMPDIR
+
+            cargo build \
+              --release \
+              --lib \
+              --target wasm32-unknown-unknown
+
+            runHook postBuild
+          '';
+
+          installPhase = ''
+            runHook preInstall
+            mkdir -p $out/lib
+            cp target/wasm32-unknown-unknown/release/*.wasm $out/lib/
+            runHook postInstall
+          '';
+
+          doCheck = false;
+        };
+
+        # Final web package with wasm-bindgen processing
+        ytbn-graphing-software-web = pkgs.stdenv.mkDerivation {
+          pname = "ytbn-graphing-software-web";
+          version = "0.1.0";
+
+          src = ./.;
+
+          nativeBuildInputs = [
+            wasm-bindgen-cli
+            pkgs.binaryen
+          ];
+
+          buildPhase = ''
+            runHook preBuild
+
+            # Generate JS bindings
+            wasm-bindgen ${wasmLib}/lib/ytbn_graphing_software.wasm \
+              --out-dir out \
+              --out-name ytbn_graphing_software \
+              --target web \
+              --no-typescript
+
+            # Optimize wasm (enable features used by modern rust wasm targets)
+            wasm-opt out/ytbn_graphing_software_bg.wasm \
+              -O2 --fast-math \
+              --enable-bulk-memory \
+              --enable-nontrapping-float-to-int \
+              --enable-sign-ext \
+              --enable-mutable-globals \
+              -o out/ytbn_graphing_software_bg.wasm
+
+            runHook postBuild
+          '';
+
+          installPhase = ''
+            runHook preInstall
+
+            mkdir -p $out
+
+            # Copy wasm and js files
+            cp out/ytbn_graphing_software_bg.wasm $out/
+            cp out/ytbn_graphing_software.js $out/
+
+            # Copy static web assets
+            cp www/index.html $out/
+            cp www/manifest.json $out/
+            cp www/sw.js $out/
+
+            # Copy logo
+            cp assets/logo.svg $out/
+
+            runHook postInstall
+          '';
+
+          meta = with pkgs.lib; {
+            description = "Web-compatible graphing calculator similar to Desmos";
+            homepage = "https://github.com/Titaniumtown/YTBN-Graphing-Software";
+            license = licenses.agpl3Only;
+            platforms = platforms.all;
+          };
+        };
+      in
+      {
+        packages = {
+          default = ytbn-graphing-software-web;
+          web = ytbn-graphing-software-web;
+          wasm = wasmLib;
+        };
+
+        devShells.default = pkgs.mkShell {
+          nativeBuildInputs = with pkgs; [
+            rustToolchain
+            wasm-bindgen-cli
+            binaryen
+            python3Packages.fonttools
+            rust-analyzer
+            pkg-config
+            clang
+
+            # Runtime deps for native builds
+            libxkbcommon
+            libGL
+            wayland
+            xorg.libX11
+            xorg.libXcursor
+            xorg.libXi
+          ];
+
+          buildInputs = with pkgs; [
+            openssl
+            zstd
+          ];
+
+          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath (with pkgs; [
+            libxkbcommon
+            libGL
+            wayland
+            xorg.libX11
+            xorg.libXcursor
+            xorg.libXi
+          ]);
+        };
+      }
+    );
+}

parsing/src/autocomplete.rs

@@ -1,4 +1,4 @@
-use std::{hint::unreachable_unchecked, intrinsics::assume};
+use std::hint::unreachable_unchecked;
 
 use crate::{generate_hint, Hint, HINT_EMPTY};
 
@@ -18,7 +18,7 @@ impl Movement {
 	pub const fn is_complete(&self) -> bool { matches!(&self, &Self::Complete) }
 }
 
-impl const Default for Movement {
+impl Default for Movement {
 	fn default() -> Self { Self::None }
 }
 
@@ -29,7 +29,7 @@ pub struct AutoComplete<'a> {
 	pub string: String,
 }
 
-impl<'a> const Default for AutoComplete<'a> {
+impl<'a> Default for AutoComplete<'a> {
 	fn default() -> AutoComplete<'a> { AutoComplete::EMPTY }
 }
 
@@ -70,12 +70,6 @@ impl<'a> AutoComplete<'a> {
 				// Impossible for plural hints to be singular or non-existant
 				debug_assert!(hints.len() > 1); // check on debug
 
-				// Hint to the compiler
-				unsafe {
-					assume(hints.len() > 1);
-					assume(!hints.is_empty());
-				}
-
 				match movement {
 					Movement::Up => {
 						// Wrap self.i to maximum `i` value if needed

parsing/src/lib.rs

@@ -1,7 +1,3 @@
-#![feature(const_trait_impl)]
-#![feature(core_intrinsics)]
-#![feature(const_mut_refs)]
-#![feature(const_for)]
 mod autocomplete;
 mod autocomplete_hashmap;
 mod parsing;

parsing/src/parsing.rs

@@ -58,7 +58,7 @@ impl FlatExWrapper {
 			.as_ref()
 			.map(|f| {
 				f.clone()
-					.partial_iter((0..=n).map(|_| 0))
+					.partial_iter((0..n).map(|_| 0))
 					.map(Self::new)
 					.unwrap_or(Self::EMPTY)
 			})
@@ -66,7 +66,7 @@ impl FlatExWrapper {
 	}
 }
 
-impl const Default for FlatExWrapper {
+impl Default for FlatExWrapper {
 	fn default() -> FlatExWrapper { FlatExWrapper::EMPTY }
 }
 /// Function that includes f(x), f'(x), f'(x)'s string representation, and f''(x)

parsing/src/splitting.rs

@@ -127,6 +127,7 @@ pub fn split_function_chars(chars: &[char], split: SplitType) -> Vec<String> {
 
 		// Append split
 		if curr_c.splitable(c, &prev_char, &split) {
+			// create new buffer
 			data.push(String::new());
 			last = unsafe { data.last_mut().unwrap_unchecked() };
 		}

parsing/src/suggestions.rs

@@ -1,5 +1,4 @@
 use crate::{split_function_chars, SplitType};
-use std::intrinsics::assume;
 
 pub const HINT_EMPTY: Hint = Hint::Single("x^2");
 const HINT_CLOSED_PARENS: Hint = Hint::Single(")");
@@ -20,10 +19,6 @@ pub fn generate_hint<'a>(input: &str) -> &'a Hint<'a> {
 	} else {
 		let chars: Vec<char> = input.chars().collect::<Vec<char>>();
 
-		unsafe {
-			assume(!chars.is_empty());
-		}
-
 		let key = get_last_term(&chars);
 		match key {
 			Some(key) => {

push.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-set -e #kill script if error occurs
-
-cargo test
-
-bash build.sh release
-
-echo "rsyncing"
-# rsync -av --delete --info=progress2 tmp/ rpi-public:/mnt/hdd/http_share/ytbn/
-rsync -av --delete --info=progress2 --exclude=".git" tmp/ ../titaniumtown.github.io/
-rm -fr tmp
-cd ../titaniumtown.github.io
-git add .
-git commit -m "update" | true
-git push

shell.nix

@@ -0,0 +1,30 @@
+{
+  pkgs ? import <nixpkgs> { },
+}:
+pkgs.mkShell rec {
+  libs = with pkgs; [
+    # wayland
+    libxkbcommon
+    libGL
+    wayland
+
+    libx11
+    libxcursor
+    libxi
+
+    clang
+  ];
+
+  nativeBuildInputs =
+    with pkgs;
+    [
+      rustc
+      cargo
+      rust-analyzer
+      python3Packages.fonttools
+    ]
+    ++ libs;
+
+  # add libs to path
+  LD_LIBRARY_PATH = "${pkgs.lib.makeLibraryPath libs}";
+}

src/function_entry.rs

@@ -1,16 +1,15 @@
 use crate::math_app::AppSettings;
-use crate::misc::{newtons_method_helper, step_helper, EguiHelper};
+use crate::misc::{EguiHelper, newtons_method_helper, step_helper};
 use egui::{Checkbox, Context};
 use egui_plot::{Bar, BarChart, PlotPoint, PlotUi};
 
 use epaint::Color32;
-use parsing::{generate_hint, AutoComplete};
-use parsing::{process_func_str, BackingFunction};
-use serde::{ser::SerializeStruct, Deserialize, Deserializer, Serialize, Serializer};
+use parsing::{AutoComplete, generate_hint};
+use parsing::{BackingFunction, process_func_str};
+use serde::{Deserialize, Deserializer, Serialize, Serializer, ser::SerializeStruct};
 use std::{
     fmt::{self, Debug},
     hash::{Hash, Hasher},
-	intrinsics::assume,
 };
 
 /// Represents the possible variations of Riemann Sums
@@ -24,7 +23,9 @@ pub enum Riemann {
 }
 
 impl fmt::Display for Riemann {
-	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "{:?}", self) }
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{:?}", self)
+    }
 }
 
 /// `FunctionEntry` is a function that can calculate values, integrals, derivatives, etc etc
@@ -44,6 +45,9 @@ pub struct FunctionEntry {
 
     pub nth_derviative: bool,
 
+    /// If the function is visible on the graph
+    pub visible: bool,
+
     pub back_data: Vec<PlotPoint>,
     pub integral_data: Option<(Vec<Bar>, f64)>,
     pub derivative_data: Vec<PlotPoint>,
@@ -66,6 +70,7 @@ impl Hash for FunctionEntry {
         self.nth_derviative.hash(state);
         self.curr_nth.hash(state);
         self.settings_opened.hash(state);
+        self.visible.hash(state);
     }
 }
 
@@ -74,11 +79,12 @@ impl Serialize for FunctionEntry {
     where
         S: Serializer,
     {
-		let mut s = serializer.serialize_struct("FunctionEntry", 4)?;
+        let mut s = serializer.serialize_struct("FunctionEntry", 5)?;
         s.serialize_field("raw_func_str", &self.raw_func_str)?;
         s.serialize_field("integral", &self.integral)?;
         s.serialize_field("derivative", &self.derivative)?;
         s.serialize_field("curr_nth", &self.curr_nth)?;
+        s.serialize_field("visible", &self.visible)?;
 
         s.end()
     }
@@ -95,6 +101,12 @@ impl<'de> Deserialize<'de> for FunctionEntry {
             integral: bool,
             derivative: bool,
             curr_nth: usize,
+            #[serde(default = "default_visible")]
+            visible: bool,
+        }
+
+        fn default_visible() -> bool {
+            true
         }
 
         let helper = Helper::deserialize(deserializer)?;
@@ -114,12 +126,13 @@ impl<'de> Deserialize<'de> for FunctionEntry {
         new_func_entry.integral = helper.integral;
         new_func_entry.derivative = helper.derivative;
         new_func_entry.curr_nth = helper.curr_nth;
+        new_func_entry.visible = helper.visible;
 
         Ok(new_func_entry)
     }
 }
 
-impl const Default for FunctionEntry {
+impl Default for FunctionEntry {
     /// Creates default FunctionEntry instance (which is empty)
     fn default() -> FunctionEntry {
         FunctionEntry {
@@ -128,6 +141,7 @@ impl const Default for FunctionEntry {
             integral: false,
             derivative: false,
             nth_derviative: false,
+            visible: true,
             back_data: Vec::new(),
             integral_data: None,
             derivative_data: Vec::new(),
@@ -143,7 +157,9 @@ impl const Default for FunctionEntry {
 }
 
 impl FunctionEntry {
-	pub const fn is_some(&self) -> bool { !self.function.is_none() }
+    pub const fn is_some(&self) -> bool {
+        !self.function.is_none()
+    }
 
     pub fn settings_window(&mut self, ctx: &Context) {
         let mut invalidate_nth = false;
@@ -173,7 +189,9 @@ impl FunctionEntry {
     }
 
     /// Get function's cached test result
-	pub fn get_test_result(&self) -> &Option<String> { &self.test_result }
+    pub fn get_test_result(&self) -> &Option<String> {
+        &self.test_result
+    }
 
     /// Update function string and test it
     pub fn update_string(&mut self, raw_func_str: &str) {
@@ -199,7 +217,11 @@ impl FunctionEntry {
 
     /// Creates and does the math for creating all the rectangles under the graph
     fn integral_rectangles(
-		&mut self, integral_min_x: f64, integral_max_x: f64, sum: Riemann, integral_num: usize,
+        &mut self,
+        integral_min_x: f64,
+        integral_max_x: f64,
+        sum: Riemann,
+        integral_num: usize,
     ) -> (Vec<(f64, f64)>, f64) {
         let step = (integral_max_x - integral_min_x) / (integral_num as f64);
 
@@ -236,7 +258,10 @@ impl FunctionEntry {
 
     /// Helps with processing newton's method depending on level of derivative
     fn newtons_method_helper(
-		&mut self, threshold: f64, derivative_level: usize, range: &std::ops::Range<f64>,
+        &mut self,
+        threshold: f64,
+        derivative_level: usize,
+        range: &std::ops::Range<f64>,
     ) -> Vec<PlotPoint> {
         self.function.generate_derivative(derivative_level);
         self.function.generate_derivative(derivative_level + 1);
@@ -245,15 +270,15 @@ impl FunctionEntry {
                 threshold,
                 range,
                 self.back_data.as_slice(),
-				&self.function.get_function_derivative(0),
-				&self.function.get_function_derivative(1),
+                self.function.get_function_derivative(0),
+                self.function.get_function_derivative(1),
             ),
             1 => newtons_method_helper(
                 threshold,
                 range,
                 self.derivative_data.as_slice(),
-				&self.function.get_function_derivative(1),
-				&self.function.get_function_derivative(2),
+                self.function.get_function_derivative(1),
+                self.function.get_function_derivative(2),
             ),
             _ => unreachable!(),
         };
@@ -266,7 +291,10 @@ impl FunctionEntry {
 
     /// Does the calculations and stores results in `self`
     pub fn calculate(
-		&mut self, width_changed: bool, min_max_changed: bool, did_zoom: bool,
+        &mut self,
+        width_changed: bool,
+        min_max_changed: bool,
+        did_zoom: bool,
         settings: AppSettings,
     ) {
         if self.test_result.is_some() | self.function.is_none() {
@@ -277,8 +305,6 @@ impl FunctionEntry {
         debug_assert!(resolution > 0.0);
         let resolution_iter = step_helper(settings.plot_width + 1, settings.min_x, resolution);
 
-		unsafe { assume(!resolution_iter.is_empty()) }
-
         // Makes sure proper arguments are passed when integral is enabled
         if self.integral && settings.integral_changed {
             self.clear_integral();
@@ -356,9 +382,12 @@ impl FunctionEntry {
     /// Displays the function's output on PlotUI `plot_ui` with settings `settings`.
     /// Returns an `Option<f64>` of the calculated integral.
     pub fn display(
-		&self, plot_ui: &mut PlotUi, settings: &AppSettings, main_plot_color: Color32,
+        &self,
+        plot_ui: &mut PlotUi,
+        settings: &AppSettings,
+        main_plot_color: Color32,
     ) -> Option<f64> {
-		if self.test_result.is_some() | self.function.is_none() {
+        if self.test_result.is_some() | self.function.is_none() | !self.visible {
             return None;
         }
 
@@ -382,7 +411,7 @@ impl FunctionEntry {
                         .cloned()
                         .collect::<Vec<PlotPoint>>()
                         .to_line()
-						.stroke(epaint::Stroke::NONE)
+                        .stroke((0.0, Color32::TRANSPARENT))
                         .color(Color32::from_rgb(4, 4, 255))
                         .fill(0.0),
                 );
@@ -391,7 +420,7 @@ impl FunctionEntry {
                 self.back_data
                     .clone()
                     .to_line()
-					.stroke(egui::Stroke::new(4.0, main_plot_color)),
+                    .stroke((4.0, main_plot_color)),
             );
         }
 
@@ -433,7 +462,7 @@ impl FunctionEntry {
             Some(integral_data) => {
                 if integral_step > step {
                     plot_ui.bar_chart(
-						BarChart::new(integral_data.0.clone())
+                        BarChart::new("integral", integral_data.0.clone())
                             .color(Color32::BLUE)
                             .width(integral_step),
                     );
@@ -458,25 +487,37 @@ impl FunctionEntry {
 
     /// Invalidate `back` data
     #[inline]
-	fn clear_back(&mut self) { self.back_data.clear(); }
+    fn clear_back(&mut self) {
+        self.back_data.clear();
+    }
 
     /// Invalidate Integral data
     #[inline]
-	fn clear_integral(&mut self) { self.integral_data = None; }
+    fn clear_integral(&mut self) {
+        self.integral_data = None;
+    }
 
     /// Invalidate Derivative data
     #[inline]
-	fn clear_derivative(&mut self) { self.derivative_data.clear(); }
+    fn clear_derivative(&mut self) {
+        self.derivative_data.clear();
+    }
 
     /// Invalidates `n`th derivative data
     #[inline]
-	fn clear_nth(&mut self) { self.nth_derivative_data = None }
+    fn clear_nth(&mut self) {
+        self.nth_derivative_data = None
+    }
 
     /// Invalidate extrema data
     #[inline]
-	fn clear_extrema(&mut self) { self.extrema_data.clear() }
+    fn clear_extrema(&mut self) {
+        self.extrema_data.clear()
+    }
 
     /// Invalidate root data
     #[inline]
-	fn clear_roots(&mut self) { self.root_data.clear() }
+    fn clear_roots(&mut self) {
+        self.root_data.clear()
+    }
 }

src/function_manager.rs

@@ -4,7 +4,7 @@ use crate::{
     misc::{create_id, get_u64_id, random_u64},
     widgets::widgets_ontop,
 };
-use egui::{Button, Id, Key, Modifiers, TextEdit, WidgetText};
+use egui::{Button, Id, Key, Modifiers, Popup, TextEdit, WidgetText};
 use emath::vec2;
 use parsing::Movement;
 use serde::ser::SerializeStruct;
@@ -86,9 +86,14 @@ impl FunctionManager {
         let initial_hash = self.get_hash();
 
         let can_remove = self.functions.len() > 1;
+        let can_add = self.functions.len() < COLORS.len();
+        let num_functions = self.functions.len();
 
         let available_width = ui.available_width();
         let mut remove_i: Option<usize> = None;
+        let mut clone_i: Option<usize> = None;
+        let mut move_up_i: Option<usize> = None;
+        let mut move_down_i: Option<usize> = None;
         let target_size = vec2(available_width, crate::consts::FONT_SIZE);
         for (i, (te_id, function)) in self.functions.iter_mut().map(|(a, b)| (*a, b)).enumerate() {
             let mut new_string = function.autocomplete.string.clone();
@@ -116,6 +121,19 @@ impl FunctionManager {
             // Only keep valid chars
             new_string.retain(crate::misc::is_valid_char);
 
+            // Display error indicator with tooltip if there's a parsing error
+            if let Some(error) = function.get_test_result() {
+                ui.horizontal(|ui| {
+                    ui.label(egui::RichText::new("⚠").color(egui::Color32::YELLOW))
+                        .on_hover_text(error);
+                    ui.label(
+                        egui::RichText::new(error)
+                            .color(egui::Color32::LIGHT_RED)
+                            .small(),
+                    );
+                });
+            }
+
             // If not fully open, return here as buttons cannot yet be displayed, therefore the user is inable to mark it for deletion
             let animate_bool = ui.ctx().animate_bool(te_id, re.has_focus());
             if animate_bool == 1.0 {
@@ -151,45 +169,33 @@ impl FunctionManager {
                     if movement != Movement::Complete
                         && let Some(hints) = function.autocomplete.hint.many()
                     {
-						// Doesn't need to have a number in id as there should only be 1 autocomplete popup in the entire gui
-
-						// hashed "autocomplete_popup"
-						const POPUP_ID: Id = create_id(7574801616484505465);
-
                         let mut clicked = false;
+                        let selected_i = function.autocomplete.i;
 
-						egui::popup_below_widget(ui, POPUP_ID, &re, |ui| {
+                        if let Some(popup_response) = Popup::menu(&re).show(|ui| {
                             hints.iter().enumerate().for_each(|(i, candidate)| {
-								if ui
-									.selectable_label(i == function.autocomplete.i, *candidate)
-									.clicked()
-								{
+                                if ui.selectable_label(i == selected_i, *candidate).clicked() {
                                     clicked = true;
                                     function.autocomplete.i = i;
                                 }
                             });
-						});
-
-						if clicked {
+                        }) && clicked
+                        {
                             function
                                 .autocomplete
                                 .apply_hint(hints[function.autocomplete.i]);
-
-							// Don't need this here as it simply won't be display next frame
-							// ui.memory_mut().close_popup();
-
                             movement = Movement::Complete;
-						} else {
-							ui.memory_mut(|x| x.open_popup(POPUP_ID));
                         }
                     }
 
                     // Push cursor to end if needed
-					if movement == Movement::Complete {
-						let mut state =
-							unsafe { TextEdit::load_state(ui.ctx(), te_id).unwrap_unchecked() };
+                    if movement == Movement::Complete
+                        && let Some(mut state) = TextEdit::load_state(ui.ctx(), te_id)
+                    {
                         let ccursor = egui::text::CCursor::new(function.autocomplete.string.len());
-						state.set_ccursor_range(Some(egui::text::CCursorRange::one(ccursor)));
+                        state
+                            .cursor
+                            .set_char_range(Some(egui::text::CCursorRange::one(ccursor)));
                         TextEdit::store_state(ui.ctx(), te_id, state);
                     }
                 }
@@ -209,6 +215,47 @@ impl FunctionManager {
                             remove_i = Some(i);
                         }
 
+                        // Toggle visibility
+                        function.visible.bitxor_assign(
+                            ui.add(button_area_button(if function.visible {
+                                "👁"
+                            } else {
+                                "○"
+                            }))
+                            .on_hover_text(match function.visible {
+                                true => "Hide Function",
+                                false => "Show Function",
+                            })
+                            .clicked(),
+                        );
+
+                        // Clone function
+                        if ui
+                            .add_enabled(can_add, button_area_button("⎘"))
+                            .on_hover_text("Clone Function")
+                            .clicked()
+                        {
+                            clone_i = Some(i);
+                        }
+
+                        // Move up (only if not first)
+                        if ui
+                            .add_enabled(i > 0, button_area_button("⬆"))
+                            .on_hover_text("Move Up")
+                            .clicked()
+                        {
+                            move_up_i = Some(i);
+                        }
+
+                        // Move down (only if not last)
+                        if ui
+                            .add_enabled(i < num_functions - 1, button_area_button("⬇"))
+                            .on_hover_text("Move Down")
+                            .clicked()
+                        {
+                            move_down_i = Some(i);
+                        }
+
                         ui.add_enabled_ui(function.is_some(), |ui| {
                             // Toggle integral being enabled or not
                             function.integral.bitxor_assign(
@@ -252,6 +299,26 @@ impl FunctionManager {
             self.functions.remove(remove_i_unwrap);
         }
 
+        // Clone function if the user requests it
+        if let Some(clone_i_unwrap) = clone_i {
+            let cloned = self.functions[clone_i_unwrap].1.clone();
+            self.push_cloned(cloned);
+        }
+
+        // Move function up if the user requests it
+        if let Some(i) = move_up_i
+            && i > 0
+        {
+            self.functions.swap(i, i - 1);
+        }
+
+        // Move function down if the user requests it
+        if let Some(i) = move_down_i
+            && i < self.functions.len() - 1
+        {
+            self.functions.swap(i, i + 1);
+        }
+
         let final_hash = self.get_hash();
 
         initial_hash != final_hash
@@ -265,17 +332,33 @@ impl FunctionManager {
         ));
     }
 
+    /// Push a cloned function entry
+    pub fn push_cloned(&mut self, mut entry: FunctionEntry) {
+        // Reset settings_opened so the cloned function doesn't have settings open
+        entry.settings_opened = false;
+        self.functions.push((
+            create_id(random_u64().expect("unable to generate random id")),
+            entry,
+        ));
+    }
+
     /// Detect if any functions are using integrals
     pub fn any_using_integral(&self) -> bool {
         self.functions.iter().any(|(_, func)| func.integral)
     }
 
     #[inline]
-	pub fn len(&self) -> usize { self.functions.len() }
+    pub fn len(&self) -> usize {
+        self.functions.len()
+    }
 
     #[inline]
-	pub fn get_entries_mut(&mut self) -> &mut Functions { &mut self.functions }
+    pub fn get_entries_mut(&mut self) -> &mut Functions {
+        &mut self.functions
+    }
 
     #[inline]
-	pub fn get_entries(&self) -> &Functions { &self.functions }
+    pub fn get_entries(&self) -> &Functions {
+        &self.functions
+    }
 }

src/lib.rs

@@ -1,15 +1,3 @@
-#![feature(const_mut_refs)]
-#![feature(let_chains)]
-#![feature(const_trait_impl)]
-#![feature(core_intrinsics)]
-#![feature(const_fn_floating_point_arithmetic)]
-#![feature(const_assume)]
-#![feature(const_option_ext)]
-#![feature(const_slice_index)]
-#![feature(slice_split_at_unchecked)]
-#![feature(inline_const)]
-#![feature(const_for)]
-
 #[macro_use]
 extern crate static_assertions;
 
@@ -25,8 +13,8 @@ pub use crate::{
     function_entry::{FunctionEntry, Riemann},
     math_app::AppSettings,
     misc::{
-		hashed_storage_create, hashed_storage_read, newtons_method, option_vec_printer,
-		step_helper, EguiHelper, HashBytes,
+        EguiHelper, HashBytes, hashed_storage_create, hashed_storage_read, newtons_method,
+        option_vec_printer, step_helper,
     },
     unicode_helper::{to_chars_array, to_unicode_hash},
 };
@@ -63,12 +51,12 @@ cfg_if::cfg_if! {
 
                  /// Call this once from JavaScript to start your app.
                  #[wasm_bindgen]
-				 pub async fn start(&self, canvas_id: &str) -> Result<(), wasm_bindgen::JsValue> {
+                 pub async fn start(&self, canvas: web_sys::HtmlCanvasElement) -> Result<(), wasm_bindgen::JsValue> {
                      self.runner
                          .start(
-							 canvas_id,
+                             canvas,
                              eframe::WebOptions::default(),
-							 Box::new(|cc| Box::new(math_app::MathApp::new(cc))),
+                             Box::new(|cc| Ok(Box::new(math_app::MathApp::new(cc)))),
                          )
                          .await
                  }
@@ -78,9 +66,16 @@ cfg_if::cfg_if! {
         pub async fn start() {
             tracing::info!("Starting...");
 
+            let window = web_sys::window().expect("no global window exists");
+            let document = window.document().expect("should have a document on window");
+            let canvas = document
+                .get_element_by_id("canvas")
+                .expect("should have a canvas element with id 'canvas'")
+                .dyn_into::<web_sys::HtmlCanvasElement>()
+                .expect("canvas element should be an HtmlCanvasElement");
 
             let web_handle = WebHandle::new();
-			web_handle.start("canvas").await.unwrap()
+            web_handle.start(canvas).await.unwrap()
         }
     }
 }

src/main.rs

@@ -1,15 +1,3 @@
-#![feature(const_mut_refs)]
-#![feature(let_chains)]
-#![feature(const_trait_impl)]
-#![feature(core_intrinsics)]
-#![feature(const_fn_floating_point_arithmetic)]
-#![feature(const_assume)]
-#![feature(const_option_ext)]
-#![feature(const_slice_index)]
-#![feature(slice_split_at_unchecked)]
-#![feature(inline_const)]
-#![feature(const_for)]
-
 #[macro_use]
 extern crate static_assertions;
 
@@ -23,7 +11,7 @@ mod widgets;
 
 // For running the program natively! (Because why not?)
 #[cfg(not(target_arch = "wasm32"))]
-fn main() -> eframe::Result<()> {
+fn main() -> eframe::Result {
     let subscriber = tracing_subscriber::FmtSubscriber::builder()
         .with_max_level(tracing::Level::INFO)
         .finish();
@@ -33,6 +21,6 @@ fn main() -> eframe::Result<()> {
     eframe::run_native(
         "(Yet-to-be-named) Graphing Software",
         eframe::NativeOptions::default(),
-		Box::new(|cc| Box::new(math_app::MathApp::new(cc))),
+        Box::new(|cc| Ok(Box::new(math_app::MathApp::new(cc)))),
     )
 }

src/math_app.rs

@@ -1,21 +1,21 @@
 use crate::{
-	consts::{build, BUILD_INFO, COLORS, DEFAULT_INTEGRAL_NUM, DEFAULT_MAX_X, DEFAULT_MIN_X},
+    consts::{BUILD_INFO, COLORS, DEFAULT_INTEGRAL_NUM, DEFAULT_MAX_X, DEFAULT_MIN_X, build},
     function_entry::Riemann,
     function_manager::FunctionManager,
-	misc::option_vec_printer,
+    misc::{EguiHelper, find_intersections, option_vec_printer},
 };
 use eframe::App;
 use egui::{
-	style::Margin, Button, CentralPanel, Color32, ComboBox, Context, DragValue, Frame, Key, Layout,
-	SidePanel, TopBottomPanel, Ui, Vec2, Window,
+    Button, CentralPanel, Color32, ComboBox, Context, DragValue, Frame, Key, Layout, Panel, Ui,
+    Vec2, Window,
 };
 use egui_plot::Plot;
 
 use emath::{Align, Align2};
-use epaint::Rounding;
-use instant::Instant;
-use itertools::Itertools;
+use epaint::{CornerRadius, Margin};
+
 use std::{io::Read, ops::BitXorAssign};
+use web_time::Instant;
 
 /// Stores current settings/state of [`MathApp`]
 #[derive(Copy, Clone)]
@@ -47,6 +47,9 @@ pub struct AppSettings {
     /// Stores whether or not displaying roots is enabled
     pub do_roots: bool,
 
+    /// Stores whether or not displaying intersections between functions is enabled
+    pub do_intersections: bool,
+
     /// Stores current plot pixel width
     pub plot_width: usize,
 }
@@ -64,6 +67,7 @@ impl Default for AppSettings {
             integral_num: DEFAULT_INTEGRAL_NUM,
             do_extrema: true,
             do_roots: true,
+            do_intersections: true,
             plot_width: 0,
         }
     }
@@ -84,7 +88,7 @@ struct Opened {
     pub welcome: bool,
 }
 
-impl const Default for Opened {
+impl Default for Opened {
     fn default() -> Opened {
         Self {
             help: false,
@@ -108,10 +112,15 @@ pub struct MathApp {
 
     /// Stores settings (pretty self-explanatory)
     settings: AppSettings,
+
+    /// Stores intersection points between functions
+    intersections: Vec<egui_plot::PlotPoint>,
 }
 
 #[cfg(target_arch = "wasm32")]
-fn get_window() -> web_sys::Window { web_sys::window().expect("Could not get web_sys window") }
+fn get_window() -> web_sys::Window {
+    web_sys::window().expect("Could not get web_sys window")
+}
 
 #[cfg(target_arch = "wasm32")]
 fn get_localstorage() -> web_sys::Storage {
@@ -143,7 +152,6 @@ impl MathApp {
 
         cfg_if::cfg_if! {
             if #[cfg(target_arch = "wasm32")] {
-				use core::intrinsics::assume;
 
                 tracing::info!("Web Info: {:?}", &cc.integration_info.web_info);
 
@@ -151,13 +159,6 @@ impl MathApp {
                     let data = get_localstorage().get_item(DATA_NAME).ok()??;
                     let (commit, cached_data) = crate::misc::hashed_storage_read(&data)?;
 
-					debug_assert!(!commit.is_empty());
-					debug_assert!(!cached_data.is_empty());
-
-					unsafe {
-						assume(!commit.is_empty());
-						assume(!cached_data.is_empty());
-					}
 
                     if commit == unsafe { std::mem::transmute::<&str, crate::misc::HashBytes>(build::SHORT_COMMIT) } {
                         tracing::info!("Reading decompression cache. Bytes: {}", cached_data.len());
@@ -176,13 +177,6 @@ impl MathApp {
                     // TODO: stabilize FunctionManager serialize so it can persist across builds
                     let (commit, func_data) = crate::misc::hashed_storage_read(&data)?;
 
-					debug_assert!(!commit.is_empty());
-					debug_assert!(!func_data.is_empty());
-
-					unsafe {
-						assume(!commit.is_empty());
-						assume(!func_data.is_empty());
-					}
 
                     if commit == unsafe { std::mem::transmute::<&str, &[u8]>(build::SHORT_COMMIT) } {
                         tracing::info!("Reading previous function data");
@@ -198,31 +192,26 @@ impl MathApp {
 
         fn decompress_fonts() -> epaint::text::FontDefinitions {
             let mut data = Vec::new();
-			let _ = ruzstd::StreamingDecoder::new(
-				&mut const { include_bytes!(concat!(env!("OUT_DIR"), "/compressed_data")).as_slice() },
+            let _ = ruzstd::decoding::StreamingDecoder::new(
+                const { include_bytes!(concat!(env!("OUT_DIR"), "/compressed_data")).as_slice() },
             )
             .expect("unable to decode compressed data")
             .read_to_end(&mut data)
             .expect("unable to read compressed data");
 
-			#[cfg(target = "wasm32")]
+            #[cfg(target_arch = "wasm32")]
             {
-				debug_assert!(!data.is_empty());
-
-				unsafe {
-					assume(!data.is_empty());
-				}
-
                 tracing::info!("Setting decompression cache");
-				let commit: crate::misc::HashBytes = const {
-					unsafe {
-						std::mem::transmute::<&str, crate::misc::HashBytes>(build::SHORT_COMMIT)
-					}
-				};
-				let saved_data = commit.hashed_storage_create(data);
+                // Convert SHORT_COMMIT string to fixed-size byte array
+                let commit_bytes = build::SHORT_COMMIT.as_bytes();
+                let mut commit: crate::misc::HashBytes = [0u8; crate::misc::HASH_LENGTH];
+                let len = commit_bytes.len().min(crate::misc::HASH_LENGTH);
+                commit[..len].copy_from_slice(&commit_bytes[..len]);
+
+                let saved_data = crate::misc::hashed_storage_create(commit, &data);
                 tracing::info!("Bytes: {}", saved_data.len());
                 get_localstorage()
-					.set_item(DATA_NAME, saved_data)
+                    .set_item(DATA_NAME, &saved_data)
                     .expect("failed to set local storage cache");
             }
 
@@ -234,7 +223,7 @@ impl MathApp {
         // Initialize fonts
         // This used to be in the `update` method, but (after a ton of digging) this actually caused OOMs. that was a pain to debug
         cc.egui_ctx.set_fonts({
-			#[cfg(target = "wasm32")]
+            #[cfg(target_arch = "wasm32")]
             if let Some(Ok(data)) =
                 get_storage_decompressed().map(|data| bincode::deserialize(data.as_slice()))
             {
@@ -243,7 +232,7 @@ impl MathApp {
                 decompress_fonts()
             }
 
-			#[cfg(not(target = "wasm32"))]
+            #[cfg(not(target_arch = "wasm32"))]
             decompress_fonts()
         });
 
@@ -265,6 +254,7 @@ impl MathApp {
             last_info: (None, None),
             opened: Opened::default(),
             settings: AppSettings::default(),
+            intersections: Vec::new(),
         }
     }
 
@@ -272,9 +262,7 @@ impl MathApp {
     fn side_panel(&mut self, ctx: &Context) {
         // Side Panel which contains vital options to the operation of the application
         // (such as adding functions and other options)
-		SidePanel::left("side_panel")
-			.resizable(false)
-			.show(ctx, |ui| {
+        Panel::left("side_panel").resizable(false).show(ctx, |ui| {
             let any_using_integral = self.functions.any_using_integral();
             let prev_sum = self.settings.riemann_sum;
             // ComboBox for selecting what Riemann sum type to use
@@ -286,11 +274,7 @@ impl MathApp {
                 ComboBox::from_label("Riemann Sum")
                     .selected_text(self.settings.riemann_sum.to_string())
                     .show_ui(ui, |ui| {
-							ui.selectable_value(
-								&mut self.settings.riemann_sum,
-								Riemann::Left,
-								"Left",
-							);
+                        ui.selectable_value(&mut self.settings.riemann_sum, Riemann::Left, "Left");
                         ui.selectable_value(
                             &mut self.settings.riemann_sum,
                             Riemann::Middle,
@@ -379,13 +363,22 @@ impl MathApp {
                         })
                         .clicked(),
                 );
+
+                self.settings.do_intersections.bitxor_assign(
+                    ui.add(Button::new("Intersections"))
+                        .on_hover_text(match self.settings.do_intersections {
+                            true => "Disable Displaying Intersections",
+                            false => "Display Intersections between functions",
+                        })
+                        .clicked(),
+                );
             });
 
             if self.functions.display_entries(ui) {
                 #[cfg(target_arch = "wasm32")]
                 {
                     tracing::info!("Saving function data");
-						use crate::misc::{hashed_storage_create, HashBytes};
+                    use crate::misc::{HashBytes, hashed_storage_create};
                     let hash: HashBytes =
                         unsafe { std::mem::transmute::<&str, HashBytes>(build::SHORT_COMMIT) };
                     let saved_data = hashed_storage_create(
@@ -421,7 +414,7 @@ impl App for MathApp {
     fn update(&mut self, ctx: &Context, _frame: &mut eframe::Frame) {
         // start timer
         let start = if self.opened.info {
-			Some(instant::Instant::now())
+            Some(Instant::now())
         } else {
             // if disabled, clear the stored formatted time
             self.last_info.1 = None;
@@ -438,7 +431,7 @@ impl App for MathApp {
         }
 
         // Creates Top bar that contains some general options
-		TopBottomPanel::top("top_bar").show(ctx, |ui| {
+        Panel::top("top_bar").show(ctx, |ui| {
             ui.horizontal(|ui| {
                 // Button in top bar to toggle showing the side panel
                 self.opened.side_panel.bitxor_assign(
@@ -555,46 +548,23 @@ impl App for MathApp {
             self.side_panel(ctx);
         }
 
-		// Central panel which contains the central plot (or an error created when parsing)
+        // Central panel which contains the central plot
         CentralPanel::default()
             .frame(Frame {
-				inner_margin: Margin::symmetric(0.0, 0.0),
-				rounding: Rounding::ZERO,
+                inner_margin: Margin::ZERO,
+                corner_radius: CornerRadius::ZERO,
                 // fill: crate::style::STYLE.window_fill(),
                 fill: Color32::from_gray(27),
-				..Frame::none()
+                ..Frame::NONE
             })
             .show(ctx, |ui| {
-				// Display an error if it exists
-				let errors_formatted: String = self
-					.functions
-					.get_entries()
-					.iter()
-					.map(|(_, func)| func.get_test_result())
-					.enumerate()
-					.filter(|(_, error)| error.is_some())
-					.map(|(i, error)| {
-						// use unwrap_unchecked as None Errors are already filtered out
-						unsafe {
-							format!("(Function #{}) {}\n", i, error.as_ref().unwrap_unchecked())
-						}
-					})
-					.join("");
-
-				if !errors_formatted.is_empty() {
-					ui.centered_and_justified(|ui| {
-						ui.heading(errors_formatted);
-					});
-					return;
-				}
-
                 let available_width: usize = (ui.available_width() as usize) + 1; // Used in later logic
                 let width_changed = available_width != self.settings.plot_width;
                 self.settings.plot_width = available_width;
 
                 // Create and setup plot
                 Plot::new("plot")
-					.set_margin_fraction(Vec2::ZERO)
+                    .set_margin_fraction(emath::Vec2::ZERO)
                     .data_aspect(1.0)
                     .include_y(0)
                     .show(ui, |plot_ui| {
@@ -632,6 +602,41 @@ impl App for MathApp {
                             })
                             .collect();
 
+                        // Calculate and display intersections between functions
+                        if self.settings.do_intersections {
+                            let entries = self.functions.get_entries();
+                            let visible_entries: Vec<_> = entries
+                                .iter()
+                                .filter(|(_, f)| f.visible && f.is_some())
+                                .collect();
+
+                            // Clear previous intersections
+                            self.intersections.clear();
+
+                            // Find intersections between all pairs of visible functions
+                            for i in 0..visible_entries.len() {
+                                for j in (i + 1)..visible_entries.len() {
+                                    let (_, func1) = visible_entries[i];
+                                    let (_, func2) = visible_entries[j];
+
+                                    let mut intersections =
+                                        find_intersections(&func1.back_data, &func2.back_data);
+                                    self.intersections.append(&mut intersections);
+                                }
+                            }
+
+                            // Display intersection points
+                            if !self.intersections.is_empty() {
+                                plot_ui.points(
+                                    self.intersections
+                                        .clone()
+                                        .to_points()
+                                        .color(Color32::from_rgb(255, 105, 180)) // Hot pink for visibility
+                                        .radius(6.0),
+                                );
+                            }
+                        }
+
                         self.last_info.0 = if area.iter().any(|e| e.is_some()) {
                             Some(format!("Area: {}", option_vec_printer(area.as_slice())))
                         } else {
@@ -641,6 +646,6 @@ impl App for MathApp {
             });
 
         // Calculate and store the last time it took to draw the frame
-		self.last_info.1 = start.map(|a| format!("Took: {}ms", a.elapsed().as_micros()));
+        self.last_info.1 = start.map(|a| format!("Took: {}us", a.elapsed().as_micros()));
     }
 }

src/misc.rs

@@ -1,20 +1,19 @@
 use egui::Id;
 use egui_plot::{Line, PlotPoint, PlotPoints, Points};
 use emath::Pos2;
-use getrandom::getrandom;
 use itertools::Itertools;
 use parsing::FlatExWrapper;
 
 /// Implements traits that are useful when dealing with Vectors of egui's `Value`
 pub trait EguiHelper {
     /// Converts to `egui::plot::Values`
-	fn to_values(self) -> PlotPoints;
+    fn to_values(self) -> PlotPoints<'static>;
 
     /// Converts to `egui::plot::Line`
-	fn to_line(self) -> Line;
+    fn to_line(self) -> Line<'static>;
 
     /// Converts to `egui::plot::Points`
-	fn to_points(self) -> Points;
+    fn to_points(self) -> Points<'static>;
 
     /// Converts Vector of Values into vector of tuples
     fn to_tuple(self) -> Vec<(f64, f64)>;
@@ -22,15 +21,19 @@ pub trait EguiHelper {
 
 impl EguiHelper for Vec<PlotPoint> {
     #[inline(always)]
-	fn to_values(self) -> PlotPoints {
+    fn to_values(self) -> PlotPoints<'static> {
         PlotPoints::from(unsafe { std::mem::transmute::<Vec<PlotPoint>, Vec<[f64; 2]>>(self) })
     }
 
     #[inline(always)]
-	fn to_line(self) -> Line { Line::new(self.to_values()) }
+    fn to_line(self) -> Line<'static> {
+        Line::new("", self.to_values())
+    }
 
     #[inline(always)]
-	fn to_points(self) -> Points { Points::new(self.to_values()) }
+    fn to_points(self) -> Points<'static> {
+        Points::new("", self.to_values())
+    }
 
     #[inline(always)]
     fn to_tuple(self) -> Vec<(f64, f64)> {
@@ -43,7 +46,7 @@ pub trait Offset {
     fn offset_x(self, x_offset: f32) -> Pos2;
 }
 
-impl const Offset for Pos2 {
+impl Offset for Pos2 {
     fn offset_y(self, y_offset: f32) -> Pos2 {
         Pos2 {
             x: self.x,
@@ -59,9 +62,13 @@ impl const Offset for Pos2 {
     }
 }
 
-pub const fn create_id(x: u64) -> Id { unsafe { std::mem::transmute::<u64, Id>(x) } }
+pub const fn create_id(x: u64) -> Id {
+    unsafe { std::mem::transmute::<u64, Id>(x) }
+}
 
-pub const fn get_u64_id(id: Id) -> u64 { unsafe { std::mem::transmute::<Id, u64>(id) } }
+pub const fn get_u64_id(id: Id) -> u64 {
+    unsafe { std::mem::transmute::<Id, u64>(id) }
+}
 
 /*
 /// Rounds f64 to `n` decimal places
@@ -80,7 +87,10 @@ pub fn decimal_round(x: f64, n: usize) -> f64 {
 /// `f_1` is f'(x) aka the derivative of f(x)
 /// The function returns a Vector of `x` values where roots occur
 pub fn newtons_method_helper(
-	threshold: f64, range: &std::ops::Range<f64>, data: &[PlotPoint], f: &FlatExWrapper,
+    threshold: f64,
+    range: &std::ops::Range<f64>,
+    data: &[PlotPoint],
+    f: &FlatExWrapper,
     f_1: &FlatExWrapper,
 ) -> Vec<f64> {
     data.iter()
@@ -99,7 +109,10 @@ pub fn newtons_method_helper(
 /// `f_1` is f'(x) aka the derivative of f(x)
 /// The function returns an `Option<f64>` of the x value at which a root occurs
 pub fn newtons_method(
-	f: &FlatExWrapper, f_1: &FlatExWrapper, start_x: f64, range: &std::ops::Range<f64>,
+    f: &FlatExWrapper,
+    f_1: &FlatExWrapper,
+    start_x: f64,
+    range: &std::ops::Range<f64>,
     threshold: f64,
 ) -> Option<f64> {
     let mut x1: f64 = start_x;
@@ -191,11 +204,57 @@ pub fn random_u64() -> Result<u64, getrandom::Error> {
     // Buffer of 8 `u8`s that are later merged into one u64
     let mut buf = [0u8; 8];
     // Populate buffer with random values
-	getrandom(&mut buf)?;
+    getrandom::fill(&mut buf)?;
     // Merge buffer into u64
     Ok(u64::from_be_bytes(buf))
 }
 
 include!(concat!(env!("OUT_DIR"), "/valid_chars.rs"));
 
-pub fn is_valid_char(c: char) -> bool { c.is_alphanumeric() | VALID_EXTRA_CHARS.contains(&c) }
+pub fn is_valid_char(c: char) -> bool {
+    c.is_alphanumeric() | VALID_EXTRA_CHARS.contains(&c)
+}
+
+/// Find intersection points between two functions given their plotted data
+/// Returns a vector of PlotPoints where the functions intersect
+pub fn find_intersections(data1: &[PlotPoint], data2: &[PlotPoint]) -> Vec<PlotPoint> {
+    if data1.is_empty() || data2.is_empty() || data1.len() != data2.len() {
+        return Vec::new();
+    }
+
+    // Calculate difference between functions at each x point
+    let differences: Vec<(f64, f64)> = data1
+        .iter()
+        .zip(data2.iter())
+        .filter(|(p1, p2)| p1.y.is_finite() && p2.y.is_finite())
+        .map(|(p1, p2)| (p1.x, p1.y - p2.y))
+        .collect();
+
+    // Find where sign changes (intersection points)
+    differences
+        .iter()
+        .tuple_windows()
+        .filter(|((_, diff1), (_, diff2))| diff1.signum() != diff2.signum())
+        .map(|((x1, diff1), (x2, diff2))| {
+            // Linear interpolation to find approximate x of intersection
+            let t = diff1.abs() / (diff1.abs() + diff2.abs());
+            let x = x1 + t * (x2 - x1);
+
+            // Find corresponding y values and average them for the intersection point
+            // We need to interpolate y values from both functions
+            let y1_at_x1 = data1
+                .iter()
+                .find(|p| (p.x - x1).abs() < f64::EPSILON)
+                .map(|p| p.y)
+                .unwrap_or(0.0);
+            let y1_at_x2 = data1
+                .iter()
+                .find(|p| (p.x - x2).abs() < f64::EPSILON)
+                .map(|p| p.y)
+                .unwrap_or(0.0);
+            let y = y1_at_x1 + t * (y1_at_x2 - y1_at_x1);
+
+            PlotPoint::new(x, y)
+        })
+        .collect()
+}

src/widgets.rs

@@ -3,7 +3,10 @@ use egui::{Id, InnerResponse};
 
 /// Creates an area ontop of a widget with an y offset
 pub fn widgets_ontop<R>(
-	ui: &egui::Ui, id: Id, re: &egui::Response, y_offset: f32,
+    ui: &egui::Ui,
+    id: Id,
+    re: &egui::Response,
+    y_offset: f32,
     add_contents: impl FnOnce(&mut egui::Ui) -> R,
 ) -> InnerResponse<R> {
     let area = egui::Area::new(id)

start-server.sh

@@ -1,6 +0,0 @@
-#!/bin/bash
-set -e
-
-bash build.sh "$1"
-
-basic-http-server tmp/

tests/function.rs

@@ -1,8 +1,13 @@
 use ytbn_graphing_software::{AppSettings, EguiHelper, FunctionEntry, Riemann};
 
 fn app_settings_constructor(
-	sum: Riemann, integral_min_x: f64, integral_max_x: f64, pixel_width: usize,
-	integral_num: usize, min_x: f64, max_x: f64,
+    sum: Riemann,
+    integral_min_x: f64,
+    integral_max_x: f64,
+    pixel_width: usize,
+    integral_num: usize,
+    min_x: f64,
+    max_x: f64,
 ) -> AppSettings {
     AppSettings {
         riemann_sum: sum,
@@ -14,6 +19,7 @@ fn app_settings_constructor(
         integral_num,
         do_extrema: false,
         do_roots: false,
+        do_intersections: false,
         plot_width: pixel_width,
     }
 }
@@ -253,10 +259,16 @@ fn do_test(sum: Riemann, area_target: f64) {
 }
 
 #[test]
-fn left_function() { do_test(Riemann::Left, 0.9600000000000001); }
+fn left_function() {
+    do_test(Riemann::Left, 0.9600000000000001);
+}
 
 #[test]
-fn middle_function() { do_test(Riemann::Middle, 0.92); }
+fn middle_function() {
+    do_test(Riemann::Middle, 0.92);
+}
 
 #[test]
-fn right_function() { do_test(Riemann::Right, 0.8800000000000001); }
+fn right_function() {
+    do_test(Riemann::Right, 0.8800000000000001);
+}

tests/misc.rs

@@ -143,8 +143,9 @@ fn invalid_hashed_storage() {
 fn newtons_method() {
     use parsing::BackingFunction;
     use parsing::FlatExWrapper;
+    use parsing::process_func_str;
     fn get_flatexwrapper(func: &str) -> FlatExWrapper {
-		let mut backing_func = BackingFunction::new(func).unwrap();
+        let backing_func = BackingFunction::new(&process_func_str(func)).unwrap();
         backing_func.get_function_derivative(0).clone()
     }