How to use multiword in Stateflow/RTW

I want to have a uint64 on a 32 bit processor. I would like to avoid using fixed point to do this if possible.

[Jon Boerner]

Hi Jim,

A couple clarifying questions:

• When you say multiword, are you looking for an explicit structure/array construct in the generated code that represents a 64-bit number with two 32-bit entries?
• Or are you looking for 64-bit numbers to just be used in the generated code because your compiler is able to accept 64-bit numbers?
• Do you not have access to the Fixed-Point Designer product? Is that why you are trying to avoid the use of fixed-point?

A couple other points to keep in mind:

• Stateflow does not support the uint64 and int64 data types, so to use 64-bit numbers in Stateflow, the only option is the double data type for a 64-bit data type, and there is no multi-word for that as best I can tell.
• The Configuration Parameters Hardware Implentation pane is where you start introducing the multiword behavior
• I do not believe any multi-word structures as mentioned above are generated without the Fixed-Point Designer

Let me know the answers to the first three questions and I can take another look.