Move checkFinite methods to a util class.

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/util/NumberConversions.java

@@ -101,4 +101,16 @@ public final class NumberConversions {
         }
         return 0;
     }
+
+    public static void checkFinite(double d, String message) {
+        if (Double.isNaN(d) || Double.isInfinite(d)) {
+            throw new IllegalArgumentException(message);
+        }
+    }
+
+    public static void checkFinite(float d, String message) {
+        if (Float.isNaN(d) || Float.isInfinite(d)) {
+            throw new IllegalArgumentException(message);
+        }
+    }
 }

paper-api/src/main/java/org/bukkit/util/Vector.java

@@ -7,6 +7,7 @@ import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.configuration.serialization.ConfigurationSerializable;
 import org.bukkit.configuration.serialization.SerializableAs;
+import static org.bukkit.util.NumberConversions.checkFinite;
 
 /**
  * Represents a mutable vector. Because the components of Vectors are mutable,
@@ -646,10 +647,4 @@ public class Vector implements Cloneable, ConfigurationSerializable {
 
         return new Vector(x, y, z);
     }
-
-    private static void checkFinite(double d, String message) {
-        if (Double.isNaN(d) || Double.isInfinite(d)) {
-            throw new IllegalArgumentException(message);
-        }
-    }
 }