Float handling should also be for reals and doubles

Author: GrahamCampbell

src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php

@@ -1178,7 +1178,7 @@ public function originalIsEquivalent($key, $current)
         } elseif ($this->hasCast($key, ['object', 'collection'])) {
             return $this->castAttribute($key, $current) ==
                 $this->castAttribute($key, $original);
-        } elseif ($this->hasCast($key, 'float')) {
+        } elseif ($this->hasCast($key, ['real', 'float', 'double'])) {
             return bccomp(
                 $this->castAttribute($key, $current),
                 $this->castAttribute($key, $original)