diff --git a/paddle/phi/kernels/funcs/elementwise_functor.h b/paddle/phi/kernels/funcs/elementwise_functor.h
index a4636565cf25a0c6a4dfc5e37bbafc92823fbd25..1304fedbd2e24284dc528127e5d33a7e1e66439d 100644
--- a/paddle/phi/kernels/funcs/elementwise_functor.h
+++ b/paddle/phi/kernels/funcs/elementwise_functor.h
@@ -570,7 +570,7 @@ struct FloorDivideFunctor {
 #ifndef PADDLE_WITH_XPU_KP
     PADDLE_ENFORCE(b != 0, DIV_ERROR_INFO);
 #endif
-    return static_cast<T>(std::trunc(a / b));
+    return static_cast<T>(a / b);
   }
 };
 
@@ -580,7 +580,7 @@ struct InverseFloorDivideFunctor {
 #ifndef PADDLE_WITH_XPU_KP
     PADDLE_ENFORCE(a != 0, DIV_ERROR_INFO);
 #endif
-    return static_cast<T>(std::trunc(b / a));
+    return static_cast<T>(b / a);
   }
 };