S12 / MagniV Microcontrollersのトピック64 bit integers in C https://community.nxp.com/t5/S12-MagniV-Microcontrollers/64-bit-integers-in-C/m-p/136346#M2391 <HTML><HEAD></HEAD><BODY><SPAN>I need to calculate 32*16 bit integer multiplication whete result may get longer than 32 bits. Is it possible to do 64 bit math in 56800E C compiler? In gcc type 'long long' equals 64 bit integer but is there equivalent in CW?</SPAN><BR /><BR /><SPAN>I also would be happy if result would saturate to 32 bits. How does saturation logic work in C? I haven't seen much documentation about it.</SPAN><BR /><BR /><SPAN>I'm using 56F8322 and CW 8.0.</SPAN></BODY></HTML> Mon, 13 Nov 2006 04:16:50 GMT GD 2006-11-13T04:16:50Z 64 bit integers in C https://community.nxp.com/t5/S12-MagniV-Microcontrollers/64-bit-integers-in-C/m-p/136346#M2391 <HTML><HEAD></HEAD><BODY><SPAN>I need to calculate 32*16 bit integer multiplication whete result may get longer than 32 bits. Is it possible to do 64 bit math in 56800E C compiler? In gcc type 'long long' equals 64 bit integer but is there equivalent in CW?</SPAN><BR /><BR /><SPAN>I also would be happy if result would saturate to 32 bits. How does saturation logic work in C? I haven't seen much documentation about it.</SPAN><BR /><BR /><SPAN>I'm using 56F8322 and CW 8.0.</SPAN></BODY></HTML> Mon, 13 Nov 2006 04:16:50 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/64-bit-integers-in-C/m-p/136346#M2391 GD 2006-11-13T04:16:50Z Re: 64 bit integers in C https://community.nxp.com/t5/S12-MagniV-Microcontrollers/64-bit-integers-in-C/m-p/136347#M2392 <HTML><HEAD></HEAD><BODY>Hello,<BR />I don't believe that CW has built-in support for extended integers, but you can easily write it yourself. Download this book: <A href="http://www.esnips.com/doc/9f6939e0-2f38-4b7c-bf73-2db477f3d000" target="test_blank">http://www.esnips.com/doc/9f6939e0-2f38-4b7c-bf73-2db477f3d000</A><BR />It is full of tricky and speed optimized algorithms and I'm sure it helps solving your problem...</BODY></HTML> Sat, 18 Nov 2006 04:26:30 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/64-bit-integers-in-C/m-p/136347#M2392 pittbull 2006-11-18T04:26:30Z