diff --git a/src/lmath.rc b/src/lmath.rc
index 7e1749f..2b2fc55 100644
--- a/src/lmath.rc
+++ b/src/lmath.rc
@@ -31,6 +31,7 @@ pub mod common {
 pub mod num {
     pub mod cast;
     pub mod consts;
+    pub mod default_eq;
     pub mod ext;
 }
 
diff --git a/src/num/default_eq.rs b/src/num/default_eq.rs
new file mode 100644
index 0000000..4d1036f
--- /dev/null
+++ b/src/num/default_eq.rs
@@ -0,0 +1,24 @@
+use std::cmp::FuzzyEq;
+
+
+pub trait DefaultEq {
+    pure fn default_eq(other: &self) -> bool;
+}
+
+pub impl bool:  DefaultEq { #[inline(always)] pure fn default_eq(other: &bool)   -> bool { self == *other } }
+
+pub impl u8:    DefaultEq { #[inline(always)] pure fn default_eq(other: &u8)     -> bool { self == *other } }
+pub impl u16:   DefaultEq { #[inline(always)] pure fn default_eq(other: &u16)    -> bool { self == *other } }
+pub impl u32:   DefaultEq { #[inline(always)] pure fn default_eq(other: &u32)    -> bool { self == *other } }
+pub impl u64:   DefaultEq { #[inline(always)] pure fn default_eq(other: &u64)    -> bool { self == *other } }
+pub impl uint:  DefaultEq { #[inline(always)] pure fn default_eq(other: &uint)   -> bool { self == *other } }
+
+pub impl i8:    DefaultEq { #[inline(always)] pure fn default_eq(other: &i8)     -> bool { self == *other } }
+pub impl i16:   DefaultEq { #[inline(always)] pure fn default_eq(other: &i16)    -> bool { self == *other } }
+pub impl i32:   DefaultEq { #[inline(always)] pure fn default_eq(other: &i32)    -> bool { self == *other } }
+pub impl i64:   DefaultEq { #[inline(always)] pure fn default_eq(other: &i64)    -> bool { self == *other } }
+pub impl int:   DefaultEq { #[inline(always)] pure fn default_eq(other: &int)    -> bool { self == *other } }
+
+pub impl f32:   DefaultEq { #[inline(always)] pure fn default_eq(other: &f32)    -> bool { self.fuzzy_eq(other) } }
+pub impl f64:   DefaultEq { #[inline(always)] pure fn default_eq(other: &f64)    -> bool { self.fuzzy_eq(other) } }
+pub impl float: DefaultEq { #[inline(always)] pure fn default_eq(other: &float)  -> bool { self.fuzzy_eq(other) } }
\ No newline at end of file