Fix typing of floor/ceil

sp.floor/sp.ceil were not recognized by the TypeAdder.

src/pystencils/typing/leaf_typing.py

@@ -11,6 +11,7 @@ from sympy.core.relational import Relational
 from sympy.functions.elementary.piecewise import ExprCondPair
 from sympy.functions.elementary.trigonometric import TrigonometricFunction, InverseTrigonometricFunction
 from sympy.functions.elementary.hyperbolic import HyperbolicFunction
+from sympy.functions.elementary.integers import RoundFunction
 from sympy.logic.boolalg import BooleanFunction
 from sympy.logic.boolalg import BooleanAtom
 
@@ -213,7 +214,7 @@ class TypeAdder:
                     new_args.append(a)
             return expr.func(*new_args) if new_args else expr, collated_type
         elif isinstance(expr, (sp.Pow, sp.exp, InverseTrigonometricFunction, TrigonometricFunction,
-                               HyperbolicFunction, sp.log)):
+                               HyperbolicFunction, sp.log, RoundFunction)):
             args_types = [self.figure_out_type(arg) for arg in expr.args]
             collated_type = collate_types([t for _, t in args_types])
             new_args = [a if t.dtype_eq(collated_type) else CastFunc(a, collated_type) for a, t in args_types]