reduced flop count

2026-05-03 05:57:34 +02:00
parent 89dfdf7785
commit e9533ab925
10 changed files with 236 additions and 166 deletions
@@ -15,9 +15,13 @@ struct Vector2d {
    *this = *this + v;
    return *this;
  }
-  // # 4 flops = 1 SQRT, 2 MULTs, 1 ADD
+
+  Vector2d reverse_sign() { return Vector2d(-x, -y); }
+
+  // # 1 ADD, 2 MULTs, 1 SQRT
  double norm() { return sqrt(x * x + y * y); }
-  // # 3 flops = 2 MULTs, 1 ADD
+
+  // # 1 ADD, 2 MULTs
  double dot(Vector2d v) { return x * v.x + y * v.y; }
  void reset() {
    x = 0;