Fix sign for float vectors

Author: joriskleiber

godot-core/src/builtin/vectors/vector4.rs

@@ -5,6 +5,7 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/.
  */
 
+use core::cmp::Ordering;
 use godot_ffi as sys;
 use sys::{ffi_methods, GodotFfi};
 

godot-core/src/builtin/vectors/vector4i.rs

@@ -5,6 +5,7 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/.
  */
 
+use core::cmp::Ordering;
 use godot_ffi as sys;
 use sys::{ffi_methods, GodotFfi};
 

godot-core/src/builtin/vectors/vector_macros.rs

@@ -440,7 +440,18 @@ macro_rules! impl_vector_fns {
             /// Returns a new vector with each component set to 1 if it's positive, -1 if it's negative, and 0 if it's zero.
             #[inline]
             pub fn sign(self) -> Self {
-                Self::from_glam(self.to_glam().signum())
+                #[inline]
+                fn f(x: i32) -> i32 {
+                    match x.cmp(&0) {
+                        Ordering::Equal => 0,
+                        Ordering::Greater => 1,
+                        Ordering::Less => -1,
+                    }
+                }
+
+                Self::new(
+                    $( f(self.$comp as i32) as $Scalar ),*
+                )
             }
         }
     }