feat: implement function unequal

src/numbers/relational.ts

@@ -1,11 +1,12 @@
 import { configDependency } from '../core/Config.js'
-import {Signature, ImpType} from '../core/Dispatcher.js'
+import { Signature, ImpType, Dependency } from '../core/Dispatcher.js'
 
 const DBL_EPSILON = Number.EPSILON || 2.2204460492503130808472633361816E-16
 
 declare module "./type" {
    interface NumbersReturn<Params> {
       equal: Signature<Params, [number, number], boolean>
+      unequal: Signature<Params, [number, number], boolean>
    }
 }
 
@@ -25,3 +26,9 @@ export const equal =
 
          return false
       }
+
+export const unequal = (dep: Dependency<'equal', [number, number]>):
+   ImpType<'unequal', [number, number]> =>
+   (x, y) => {
+      return !dep.equal(x, y)
+   }