add vec ops to numbrs

rust/numbrs/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "numbrs"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

rust/numbrs/src/main.rs

@@ -0,0 +1,9 @@
+mod vecOps;
+
+fn main() {
+    println!("Hello, world!");
+}
+
+fn test() {
+    let ad = [1, 2, 3];
+}

rust/numbrs/src/vecOps.rs

@@ -0,0 +1,24 @@
+pub fn addVecs<'a>(v1: &'a [f32], v2: &'a [f32]) -> Vec<f32> {
+    v1.iter().zip(v2).map(|(a, b)| a + b).collect()
+}
+
+pub fn subVecs(v1: &[f32], v2: &[f32]) -> Vec<f32> {
+    v1.iter().zip(v2).map(|(a, b)| a - b).collect()
+}
+
+pub fn normalizeVec(v1: &[f32]) -> Vec<f32> {
+    let l2Norm = normVec(v1);
+    mulScalVec(&l2Norm.powi(-1), v1)
+}
+
+pub fn normVec(v1: &[f32]) -> f32 {
+    dotVecVec(v1, v1).powf(0.5)
+}
+
+pub fn dotVecVec(v1: &[f32], v2: &[f32]) -> f32 {
+    v1.iter().zip(v2).map(|(a, b)| a * b).sum()
+}
+
+pub fn mulScalVec<'a>(s: &'a f32, v1: &'a [f32]) -> Vec<f32> {
+    v1.iter().map(|a| a * s).collect()
+}