utils: Move NextDown

src/input/mod.rs

@@ -23,7 +23,7 @@ use crate::{
         },
         SeatExt, Trigger,
     },
-    utils::{prelude::*, quirks::workspace_overview_is_open},
+    utils::{float::NextDown, prelude::*, quirks::workspace_overview_is_open},
     wayland::{
         handlers::screencopy::SessionHolder,
         protocols::screencopy::{BufferConstraints, CursorSession},
@@ -2207,32 +2207,3 @@ fn mapped_output_for_device<'a, D: Device + 'static>(
     };
     map_to_output.or_else(|| shell.builtin_output())
 }
-
-// FIXME: When f64::next_down reaches stable rust, use that instead
-trait NextDown {
-    fn next_lower(self) -> Self;
-}
-
-impl NextDown for f64 {
-    fn next_lower(self) -> Self {
-        // We must use strictly integer arithmetic to prevent denormals from
-        // flushing to zero after an arithmetic operation on some platforms.
-        const NEG_TINY_BITS: u64 = 0x8000_0000_0000_0001; // Smallest (in magnitude) negative f64.
-        const CLEAR_SIGN_MASK: u64 = 0x7fff_ffff_ffff_ffff;
-
-        let bits = self.to_bits();
-        if self.is_nan() || bits == Self::NEG_INFINITY.to_bits() {
-            return self;
-        }
-
-        let abs = bits & CLEAR_SIGN_MASK;
-        let next_bits = if abs == 0 {
-            NEG_TINY_BITS
-        } else if bits == abs {
-            bits - 1
-        } else {
-            bits + 1
-        };
-        Self::from_bits(next_bits)
-    }
-}

src/utils/float.rs

@@ -0,0 +1,28 @@
+// FIXME: When f64::next_down reaches stable rust, use that instead
+pub trait NextDown {
+    fn next_lower(self) -> Self;
+}
+
+impl NextDown for f64 {
+    fn next_lower(self) -> Self {
+        // We must use strictly integer arithmetic to prevent denormals from
+        // flushing to zero after an arithmetic operation on some platforms.
+        const NEG_TINY_BITS: u64 = 0x8000_0000_0000_0001; // Smallest (in magnitude) negative f64.
+        const CLEAR_SIGN_MASK: u64 = 0x7fff_ffff_ffff_ffff;
+
+        let bits = self.to_bits();
+        if self.is_nan() || bits == Self::NEG_INFINITY.to_bits() {
+            return self;
+        }
+
+        let abs = bits & CLEAR_SIGN_MASK;
+        let next_bits = if abs == 0 {
+            NEG_TINY_BITS
+        } else if bits == abs {
+            bits - 1
+        } else {
+            bits + 1
+        };
+        Self::from_bits(next_bits)
+    }
+}

src/utils/mod.rs

@@ -3,6 +3,7 @@
 pub mod env;
 mod ids;
 pub(crate) use self::ids::id_gen;
+pub mod float;
 pub mod geometry;
 pub mod iced;
 pub mod prelude;