Cast integer literals to target type

I ran into a case where the C++ compiler wants the suffix (or a cast): std::max(0, x) does not compile if x is of 64 bit integer type. On my machine 32 bit is the correct threshold and I think this is fairly standard. However, AFAIK it is technically platform dependent, so should we emit a cast to the target type instead?

Update: According to the standard long long (ll suffix) guarantees at least 64 bit. However, we might run into similar issues with smaller types. So I updated the MR such that integer literals are always cast to the target type. Starting with C99, an integer literal is automatically assigned a 64 bit type, if the number does not fit into 32 bit. This means that we currently do not support integer literals >32 bit prior to C99. A quarter century later, I think this is OK.

src/pystencils/types/types.py

@@ -484,7 +484,8 @@ class PsIntegerType(PsScalarType, ABC):
             raise PsTypeError(f"Given value {value} is not of required type {np_dtype}")
         unsigned_suffix = "" if self.signed else "u"
         #   TODO: cast literal to correct type?
-        return str(value) + unsigned_suffix
+        long_suffix = "" if self._width <= 32 else "l"
+        return str(value) + unsigned_suffix + long_suffix
 
     def create_constant(self, value: Any) -> Any:
         np_type = self.NUMPY_TYPES[self._width]