topic S12XEP signed 32 substraction issue in S12 / MagniV Microcontrollers https://community.nxp.com/t5/S12-MagniV-Microcontrollers/S12XEP-signed-32-substraction-issue/m-p/148243#M4103 <HTML><HEAD></HEAD><BODY><PRE>typedef signed long int S32;S32 b;S32 x1;S32 x2; ...... b = x2 - x1;</PRE><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>As a result only lower 16 bits are present in b variable. Higher 16 bits are lost somewhere. I am observing it under CodeWarrior debugger (HiWave). Why?</P></BODY></HTML> Thu, 29 Oct 2020 08:49:53 GMT mroczeks 2020-10-29T08:49:53Z S12XEP signed 32 substraction issue https://community.nxp.com/t5/S12-MagniV-Microcontrollers/S12XEP-signed-32-substraction-issue/m-p/148243#M4103 <HTML><HEAD></HEAD><BODY><PRE>typedef signed long int S32;S32 b;S32 x1;S32 x2; ...... b = x2 - x1;</PRE><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>As a result only lower 16 bits are present in b variable. Higher 16 bits are lost somewhere. I am observing it under CodeWarrior debugger (HiWave). Why?</P></BODY></HTML> Thu, 29 Oct 2020 08:49:53 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/S12XEP-signed-32-substraction-issue/m-p/148243#M4103 mroczeks 2020-10-29T08:49:53Z Re: S12XEP signed 32 substraction issue https://community.nxp.com/t5/S12-MagniV-Microcontrollers/S12XEP-signed-32-substraction-issue/m-p/148244#M4104 <HTML><HEAD></HEAD><BODY><P>It should be fine.&nbsp;</P><P>It is not clear what is storage class of b,x1 and x2.&nbsp;It is not clear&nbsp;what CW product version you are using? CW 4.6? Which compiler, C++ for XGATE?</P><P>&nbsp;</P><P>Did you try disassembling C code?&nbsp;Does it look right? Could you show disassembled code &nbsp;for b = x2 - x1? (Use search to find commented C source line in disassembled code).</P><P>&nbsp;</P></BODY></HTML> Mon, 11 Jul 2011 21:26:52 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/S12XEP-signed-32-substraction-issue/m-p/148244#M4104 kef 2011-07-11T21:26:52Z