How can we set up a 64 - bit Integer operations under CodeWarrior Development Studio for HCS12(X) Microcontrollers (Classic IDE) v5.1

[xiuminsong]

The customers is using CodeWarrior Development Studio for HCS12(X) Microcontrollers (Classic IDE) v5.1 do a S12 project，Which need use 64 bit integer operations. The results is correct when set unsigned long 32 bits, But if set to unsigned longlong 64 bits , the result is error. How can we set up a 64 - bit integer? thanks!

[Alice_Yang]

Hello Xiumin,

When you create project , please try configure :

Hope it helps

Have a great day,
Alice

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[xiuminsong]

Dear Alice，

Thanks for your reply.

I've tried this, but it's floating point type, and use an integer that needs to change.

Best Regards,

[Alice_Yang]

Hello Xiumin,

Sorry  i said before is wrong .

the HCS12(x) chips is 16 bit , so the maximum bit is 32 , it can not  realize 64 bits.

For the kinetis chip , for it is 32 bit , so the longlong type is 64 bits.

Hope it helps

Have a great day,
Alice

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[kef2]

Alice,

It's not true that 16bit MCU can't have 64bit integers in C. Even 8bit MCU's can do. But CW for S12(X) doesn't support it.

[xiuminsong]

Dear Alice，

Thank you very much！

Best Regards,