3 files changed, 26 insertions, 1 deletions
diff --git a/src/geom/length.rs b/src/geom/length.rs
index f4d8682e..bfb1d668 100644
--- a/src/geom/length.rs
+++ b/src/geom/length.rs
@@ -81,6 +81,16 @@ impl Length {
         Self { raw: self.raw.max(other.raw) }
     }
 
+    /// Whether the length is finite.
+    pub fn is_finite(self) -> bool {
+        self.raw.is_finite()
+    }
+
+    /// Whether the length is infinite.
+    pub fn is_infinite(self) -> bool {
+        self.raw.is_infinite()
+    }
+
     /// Whether the length is `NaN`.
     pub fn is_nan(self) -> bool {
         self.raw.is_nan()
diff --git a/src/geom/relative.rs b/src/geom/relative.rs
index 8fd430af..d39ead3a 100644
--- a/src/geom/relative.rs
+++ b/src/geom/relative.rs
@@ -26,7 +26,12 @@ impl Relative {
 
     /// Resolve this relative to the given `length`.
     pub fn resolve(self, length: Length) -> Length {
-        self.get() * length
+        // Zero wins over infinity.
+        if self.0 == 0.0 {
+            Length::ZERO
+        } else {
+            self.get() * length
+        }
     }
 }
 
diff --git a/src/geom/size.rs b/src/geom/size.rs
index 1dfc8b97..caba3d8b 100644
--- a/src/geom/size.rs
+++ b/src/geom/size.rs
@@ -31,6 +31,16 @@ impl Size {
         self.width >= other.width && self.height >= other.height
     }
 
+    /// Whether both components are finite.
+    pub fn is_finite(self) -> bool {
+        self.width.is_finite() && self.height.is_finite()
+    }
+
+    /// Whether any of the two components is infinite.
+    pub fn is_infinite(self) -> bool {
+        self.width.is_infinite() || self.height.is_infinite()
+    }
+
     /// Whether any of the two components is `NaN`.
     pub fn is_nan(self) -> bool {
         self.width.is_nan() || self.height.is_nan()