diff --git a/src/EnemyEclInstr.cpp b/src/EnemyEclInstr.cpp
index cb2f45a8..084ac315 100644
--- a/src/EnemyEclInstr.cpp
+++ b/src/EnemyEclInstr.cpp
@@ -774,7 +774,7 @@ void ExInsStage6XFunc6(Enemy *enemy, EclRawInstr *instr)
         effect->unk_11c.x = (g_Rng.GetRandomF32ZeroToOne() * 40.0f - 20.0f) / 60.0f;
         effect->unk_11c.y = (8.0f * baseAngleModifier) / 60.0f - (4.0f / 15.0f);
         effect->unk_11c.z = 0.0;
-        effect->unk_128 = -effect->unk_11c / RECIPROCAL(120.0f);
+        effect->unk_128 = -effect->unk_11c / 120.0f;
 
         particlePos = enemy->position;
         particlePos.x -= cosf(finalAngle) * distanceModifier;
@@ -783,7 +783,7 @@ void ExInsStage6XFunc6(Enemy *enemy, EclRawInstr *instr)
         effect->unk_11c.x = (g_Rng.GetRandomF32ZeroToOne() * 40.0f - 20.0f) / 60.0f;
         effect->unk_11c.y = (8.0f * baseAngleModifier) / 60.0f - (4.0f / 15.0f);
         effect->unk_11c.z = 0.0;
-        effect->unk_128 = -effect->unk_11c / RECIPROCAL(120.0f);
+        effect->unk_128 = -effect->unk_11c / 120.0f;
     }
 
     enemy->exInsFunc6Timer.Tick();
diff --git a/src/Player.cpp b/src/Player.cpp
index 4debf188..d53eec17 100644
--- a/src/Player.cpp
+++ b/src/Player.cpp
@@ -1319,8 +1319,8 @@ i32 Player::CalcLaserHitbox(D3DXVECTOR3 *laserCenter, D3DXVECTOR3 *laserSize, D3
     playerRelativeTopLeft = laserTopLeft - this->hitboxSize;
     playerRelativeBottomRight = laserTopLeft + this->hitboxSize;
 
-    laserTopLeft = *laserCenter - *laserSize / RECIPROCAL(2.0f);
-    laserBottomRight = *laserCenter + *laserSize / RECIPROCAL(2.0f);
+    laserTopLeft = *laserCenter - *laserSize / 2.0f;
+    laserBottomRight = *laserCenter + *laserSize / 2.0f;
 
     if (!(playerRelativeTopLeft.x > laserBottomRight.x || playerRelativeBottomRight.x < laserTopLeft.x ||
           playerRelativeTopLeft.y > laserBottomRight.y || playerRelativeBottomRight.y < laserTopLeft.y))
@@ -1399,7 +1399,7 @@ void Player::ScoreGraze(D3DXVECTOR3 *center)
         }
     }
 
-    particlePosition = (this->positionCenter + *center) / RECIPROCAL(2.0f);
+    particlePosition = (this->positionCenter + *center) / 2.0f;
     g_EffectManager.SpawnParticles(PARTICLE_EFFECT_UNK_8, &particlePosition, 1, COLOR_WHITE);
     g_GameManager.AddScore(500);
     g_GameManager.IncreaseSubrank(6);
diff --git a/src/ZunMath.hpp b/src/ZunMath.hpp
index a01656de..b475cddd 100644
--- a/src/ZunMath.hpp
+++ b/src/ZunMath.hpp
@@ -3,8 +3,6 @@
 #include <Windows.h>
 #include <d3dx8math.h>
 
-#define RECIPROCAL(x) (1.0f / x)
-
 struct ZunVec2
 {
     f32 x;
@@ -88,3 +86,8 @@ void __inline sincosmul(D3DXVECTOR3 *out_vel, f32 input, f32 multiplier)
         fstp [eax+4]
     }
 }
+
+f32 __inline invertf(f32 x)
+{
+    return 1.f / x;
+}