remove initial_value from resolve

src/integer.rs

@@ -17,9 +17,6 @@ impl<'a, 'b> Resolve<&'b Integer> for &'a Integer {
             width: self.width,
         }
     }
-    fn initial_value(&self) -> Integer {
-        Integer::new_with_value(0u8, self.width())
-    }
 }
 
 impl PartialEq for Integer {

src/logicbit/ieee1164.rs

@@ -164,7 +164,7 @@ fn resolve(a: Ieee1164, b: Ieee1164) -> Ieee1164 {
     ];
     TTABLE[a.to_index()][b.to_index()]
 }
-expand_resolve_op!(resolve, Ieee1164, Ieee1164, Ieee1164, _Z);
+expand_resolve_op!(resolve, Ieee1164, Ieee1164, Ieee1164);
 
 impl fmt::Display for Ieee1164 {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {

src/logicbit/mac.rs

@@ -1,40 +1,28 @@
 macro_rules! expand_resolve_op {
-    ($func_name:ident, $for_type:ty, $output_type:ty, $rhs:ty, $initial:ident) => {
+    ($func_name:ident, $for_type:ty, $output_type:ty, $rhs:ty) => {
         impl Resolve<$rhs> for $for_type {
             type Output = $output_type;
             fn resolve(self, rhs: $rhs) -> Self::Output {
                 $func_name(self, rhs)
             }
-            fn initial_value(&self) -> Self::Output {
-                $initial
-            }
         }
         impl<'a> Resolve<$rhs> for &'a $for_type {
             type Output = $output_type;
             fn resolve(self, rhs: $rhs) -> Self::Output {
                 $func_name(*self, rhs)
             }
-            fn initial_value(&self) -> Self::Output {
-                $initial
-            }
         }
         impl<'b> Resolve<&'b $rhs> for $for_type {
             type Output = $output_type;
             fn resolve(self, rhs: &'b $rhs) -> Self::Output {
                 $func_name(self, *rhs)
             }
-            fn initial_value(&self) -> Self::Output {
-                $initial
-            }
         }
         impl<'a, 'b> Resolve<&'b $rhs> for &'a $for_type {
             type Output = $output_type;
             fn resolve(self, rhs: &'b $rhs) -> Self::Output {
                 $func_name(*self, *rhs)
             }
-            fn initial_value(&self) -> Self::Output {
-                $initial
-            }
         }
     };
 }

src/logicbit/mod.rs

@@ -13,5 +13,4 @@ pub use self::tvlogic::Ieee1164Value;
 pub trait Resolve<RHS = Self> {
     type Output: ?Sized;
     fn resolve(self, rhs: RHS) -> Self::Output;
-    fn initial_value(&self) -> Self::Output;
 }