Int64 Support on HC12?

[ProTools]

I am using CW Pro for HC12 version 4.5. (9S12DP512 MCU) My project is in C and I have a need for 64-bit integer multiply and subtract operations.

The CW compiler options panel has a radio button for 64-bit integers, but it is grayed out.

How can I get 64-bit integer support for basic math (+, -, *, /) operations?

Thanks in advance!

[Phoenix · Accepted solution]

Hello,

The description how the basic types of ANSI-C are implemented by the MC68HC(S)12 Backend can you find In c:\Program Files\Freescale\CW for HC12 V4.5\Help\pdf\Compiler_HC12.pdf on page 515.

There is no implementation of 64bit Integer types. 64bit format is implemented only for floating types.

Best regards

Phoenix