Inlining + Reorganization + Roofline

headers/vector2d.hpp

@@ -0,0 +1,34 @@
+#pragma once
+#include <math.h>
+
+struct Vector2d {
+  double x, y;
+  Vector2d(double a, double b) : x(a), y(b) {}
+  Vector2d() : x(.0), y(.0) {}
+  Vector2d operator+(Vector2d v) const { return Vector2d(v.x + x, v.y + y); }
+  Vector2d operator-(Vector2d v) const { return Vector2d(x - v.x, y - v.y); }
+  Vector2d operator-(double a) const { return Vector2d(x - a, y - a); }
+  Vector2d operator+(double a) const { return Vector2d(x + a, y + a); }
+  Vector2d operator/(double a) const { return Vector2d(x / a, y / a); }
+  Vector2d operator*(double a) const { return Vector2d(x * a, y * a); }
+  Vector2d operator+=(const Vector2d &v) {
+    *this = *this + v;
+    return *this;
+  }
+  Vector2d operator-=(const Vector2d &v) {
+    *this = *this - v;
+    return *this;
+  }
+
+  Vector2d reverse_sign() { return Vector2d(-x, -y); }
+
+  // # 1 ADD, 2 MULTs, 1 SQRT
+  double norm() { return sqrt(x * x + y * y); }
+
+  // # 1 ADD, 2 MULTs
+  double dot(Vector2d v) { return x * v.x + y * v.y; }
+  void reset() {
+    x = 0;
+    y = 0;
+  }
+};