def METHOD_NAME(value, dtype=None, span=None):
    """construct a constant
    Parameters
    ----------
    value : number
        The content of the constant number.
    dtype : str or None, optional
        The data type.
    span : Optional[Span]
        The location of the constant value in the source.
    Returns
    -------
    const_val: tvm.Expr
        The result expression.
    """
    if dtype is None:
        dtype = _scalar_type_inference(value)
    if dtype == "uint64" and value >= (1 << 63):
        return _ffi_node_api.LargeUIntImm(dtype, value & ((1 << 32) - 1), value >> 32, span)
    return _ffi_node_api._const(value, dtype, span)