From 5c81f3525087a81f7838550324fae77cab385b1a Mon Sep 17 00:00:00 2001
From: Thomas Heck <t@b128.net>
Date: Sun, 15 Feb 2026 12:47:52 +0100
Subject: [PATCH] feat: enable clippy nursery and fix

---
 src/back.rs    |  8 ++++----
 src/bounce.rs  | 10 +++++-----
 src/circ.rs    | 14 ++++++++++----
 src/cubic.rs   |  2 +-
 src/elastic.rs | 10 ++++++----
 src/expo.rs    |  8 ++++----
 src/lib.rs     |  3 ++-
 src/quad.rs    |  4 ++--
 src/quart.rs   |  2 +-
 src/quint.rs   |  2 +-
 10 files changed, 36 insertions(+), 27 deletions(-)

diff --git a/src/back.rs b/src/back.rs
index efb4a51..af34768 100644
--- a/src/back.rs
+++ b/src/back.rs
@@ -6,14 +6,14 @@ const C3: f32 = C1 + 1.0;
 #[inline]
 #[must_use]
 pub fn back_in(t: f32) -> f32 {
-	C3 * t * t * t - C1 * t * t
+	(C3 * t * t).mul_add(t, -(C1 * t * t))
 }
 
 /// <https://easings.net/#easeOutBack>
 #[inline]
 #[must_use]
 pub fn back_out(t: f32) -> f32 {
-	1.0 + C3 * (t - 1.0).powi(3) + C1 * (t - 1.0).powi(2)
+	C1.mul_add((t - 1.0).powi(2), C3.mul_add((t - 1.0).powi(3), 1.0))
 }
 
 /// <https://easings.net/#easeInOutBack>
@@ -21,10 +21,10 @@ pub fn back_out(t: f32) -> f32 {
 #[must_use]
 pub fn back_in_out(t: f32) -> f32 {
 	if t < 0.5 {
-		((2.0 * t).powi(2) * ((C2 + 1.0) * 2.0 * t - C2)) / 2.0
+		((2.0 * t).powi(2) * ((C2 + 1.0) * 2.0).mul_add(t, -C2)) / 2.0
 	} else {
 		f32::midpoint(
-			(2.0 * t - 2.0).powi(2) * ((C2 + 1.0) * (t * 2.0 - 2.0) + C2),
+			2.0f32.mul_add(t, -2.0).powi(2) * (C2 + 1.0).mul_add(t.mul_add(2.0, -2.0), C2),
 			2.0,
 		)
 	}
diff --git a/src/bounce.rs b/src/bounce.rs
index 415fbbb..dcb5dcf 100644
--- a/src/bounce.rs
+++ b/src/bounce.rs
@@ -14,11 +14,11 @@ pub fn bounce_out(t: f32) -> f32 {
 	if t < 1.0 / D1 {
 		N1 * t * t
 	} else if t < 2.0 / D1 {
-		N1 * (t - 1.5 / D1).powi(2) + 0.75
+		N1.mul_add((t - 1.5 / D1).powi(2), 0.75)
 	} else if t < 2.5 / D1 {
-		N1 * (t - 2.25 / D1).powi(2) + 0.937_5
+		N1.mul_add((t - 2.25 / D1).powi(2), 0.937_5)
 	} else {
-		N1 * (t - 2.625 / D1).powi(2) + 0.984_375
+		N1.mul_add((t - 2.625 / D1).powi(2), 0.984_375)
 	}
 }
 
@@ -27,8 +27,8 @@ pub fn bounce_out(t: f32) -> f32 {
 #[must_use]
 pub fn bounce_in_out(t: f32) -> f32 {
 	if t < 0.5 {
-		(1.0 - bounce_out(1.0 - 2.0 * t)) / 2.0
+		(1.0 - bounce_out(2.0f32.mul_add(-t, 1.0))) / 2.0
 	} else {
-		f32::midpoint(1.0, bounce_out(2.0 * t - 1.0))
+		f32::midpoint(1.0, bounce_out(2.0f32.mul_add(t, -1.0)))
 	}
 }
diff --git a/src/circ.rs b/src/circ.rs
index d3d95fb..2902026 100644
--- a/src/circ.rs
+++ b/src/circ.rs
@@ -2,14 +2,14 @@
 #[inline]
 #[must_use]
 pub fn circ_in(t: f32) -> f32 {
-	1.0 - (1.0 - t.powi(2)).sqrt()
+	1.0 - t.mul_add(-t, 1.0).sqrt()
 }
 
 /// <https://easings.net/#easeOutCirc>
 #[inline]
 #[must_use]
 pub fn circ_out(t: f32) -> f32 {
-	(1.0 - (t - 1.0).powi(2)).sqrt()
+	(t - 1.0).mul_add(-(t - 1.0), 1.0).sqrt()
 }
 
 /// <https://easings.net/#easeInOutCirc>
@@ -17,8 +17,14 @@ pub fn circ_out(t: f32) -> f32 {
 #[must_use]
 pub fn circ_in_out(t: f32) -> f32 {
 	if t < 0.5 {
-		(1.0 - (1.0 - (2.0 * t).powi(2)).sqrt()) / 2.0
+		(1.0 - (2.0 * t).mul_add(-(2.0 * t), 1.0).sqrt()) / 2.0
 	} else {
-		f32::midpoint((1.0 - (-2.0 * t + 2.0).powi(2)).sqrt(), 1.0)
+		f32::midpoint(
+			(-2.0f32)
+				.mul_add(t, 2.0)
+				.mul_add(-(-2.0f32).mul_add(t, 2.0), 1.0)
+				.sqrt(),
+			1.0,
+		)
 	}
 }
diff --git a/src/cubic.rs b/src/cubic.rs
index 42ee24c..8c69370 100644
--- a/src/cubic.rs
+++ b/src/cubic.rs
@@ -19,6 +19,6 @@ pub fn cubic_in_out(t: f32) -> f32 {
 	if t < 0.5 {
 		4.0 * t * t * t
 	} else {
-		1.0 - (-2.0 * t + 2.0).powi(3) / 2.0
+		1.0 - (-2.0f32).mul_add(t, 2.0).powi(3) / 2.0
 	}
 }
diff --git a/src/elastic.rs b/src/elastic.rs
index 8f3fc6f..7fe8384 100644
--- a/src/elastic.rs
+++ b/src/elastic.rs
@@ -12,7 +12,7 @@ pub fn elastic_in(t: f32) -> f32 {
 	} else if 1.0 <= t {
 		1.0
 	} else {
-		-2f32.powf(10.0 * t - 10.0) * ((t * 10.0 - 10.75) * C4).sin()
+		-10.0f32.mul_add(t, -10.0).exp2() * (t.mul_add(10.0, -10.75) * C4).sin()
 	}
 }
 
@@ -25,7 +25,9 @@ pub fn elastic_out(t: f32) -> f32 {
 	} else if 1.0 <= t {
 		1.0
 	} else {
-		2f32.powf(-10.0 * t) * ((t * 10.0 - 0.75) * C4).sin() + 1.0
+		(-10.0 * t)
+			.exp2()
+			.mul_add((t.mul_add(10.0, -0.75) * C4).sin(), 1.0)
 	}
 }
 
@@ -38,8 +40,8 @@ pub fn elastic_in_out(t: f32) -> f32 {
 	} else if 1.0 <= t {
 		1.0
 	} else if t < 0.5 {
-		-(2f32.powf(20.0 * t - 10.0) * ((20.0 * t - 11.125) * C5).sin()) / 2.0
+		-(20.0f32.mul_add(t, -10.0).exp2() * (20.0f32.mul_add(t, -11.125) * C5).sin()) / 2.0
 	} else {
-		(2f32.powf(-20.0 * t + 10.0) * ((20.0 * t - 11.125) * C5).sin()) / 2.0 + 1.0
+		((-20.0f32).mul_add(t, 10.0).exp2() * (20.0f32.mul_add(t, -11.125) * C5).sin()) / 2.0 + 1.0
 	}
 }
diff --git a/src/expo.rs b/src/expo.rs
index 9e0881f..106fd75 100644
--- a/src/expo.rs
+++ b/src/expo.rs
@@ -5,7 +5,7 @@ pub fn expo_in(t: f32) -> f32 {
 	if t <= 0.0 {
 		0.0
 	} else {
-		2f32.powf(10.0 * t - 10.0)
+		10.0f32.mul_add(t, -10.0).exp2()
 	}
 }
 
@@ -16,7 +16,7 @@ pub fn expo_out(t: f32) -> f32 {
 	if 1.0 <= t {
 		1.0
 	} else {
-		1.0 - 2f32.powf(-10.0 * t)
+		1.0 - (-10.0 * t).exp2()
 	}
 }
 
@@ -29,8 +29,8 @@ pub fn expo_in_out(t: f32) -> f32 {
 	} else if 1.0 <= t {
 		1.0
 	} else if t < 0.5 {
-		2f32.powf(20.0 * t - 10.0) / 2.0
+		20.0f32.mul_add(t, -10.0).exp2() / 2.0
 	} else {
-		(2.0 - 2f32.powf(-20.0 * t + 10.0)) / 2.0
+		(2.0 - (-20.0f32).mul_add(t, 10.0).exp2()) / 2.0
 	}
 }
diff --git a/src/lib.rs b/src/lib.rs
index 7429e3d..27e61df 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -20,7 +20,8 @@
 //! assert_eq!(easing(1.0), 1.0);
 //! ```
 
-#![warn(clippy::pedantic)]
+#![warn(clippy::pedantic, clippy::nursery)]
+#![allow(clippy::missing_const_for_fn)]
 
 mod back;
 mod bounce;
diff --git a/src/quad.rs b/src/quad.rs
index 9c3e485..0d15088 100644
--- a/src/quad.rs
+++ b/src/quad.rs
@@ -9,7 +9,7 @@ pub fn quad_in(t: f32) -> f32 {
 #[inline]
 #[must_use]
 pub fn quad_out(t: f32) -> f32 {
-	1.0 - (1.0 - t).powi(2)
+	(1.0 - t).mul_add(-(1.0 - t), 1.0)
 }
 
 /// <https://easings.net/#easeInOutQuad>
@@ -19,6 +19,6 @@ pub fn quad_in_out(t: f32) -> f32 {
 	if t < 0.5 {
 		2.0 * t * t
 	} else {
-		1.0 - (-2.0 * t + 2.0).powi(2) / 2.0
+		1.0 - (-2.0f32).mul_add(t, 2.0).powi(2) / 2.0
 	}
 }
diff --git a/src/quart.rs b/src/quart.rs
index 711b36f..3a98019 100644
--- a/src/quart.rs
+++ b/src/quart.rs
@@ -19,6 +19,6 @@ pub fn quart_in_out(t: f32) -> f32 {
 	if t < 0.5 {
 		8.0 * t * t * t * t
 	} else {
-		1.0 - (-2.0 * t + 2.0).powi(4) / 2.0
+		1.0 - (-2.0f32).mul_add(t, 2.0).powi(4) / 2.0
 	}
 }
diff --git a/src/quint.rs b/src/quint.rs
index 11db77f..d7e56a5 100644
--- a/src/quint.rs
+++ b/src/quint.rs
@@ -19,6 +19,6 @@ pub fn quint_in_out(t: f32) -> f32 {
 	if t < 0.5 {
 		16.0 * t * t * t * t * t
 	} else {
-		1.0 - (-2.0 * t + 2.0).powi(5) / 2.0
+		1.0 - (-2.0f32).mul_add(t, 2.0).powi(5) / 2.0
 	}
 }