topic Floating point operations - MC9S12DP512. in S12 / MagniV Microcontrollers

Floating point operations - MC9S12DP512.

kp2309 — Thu, 14 May 2009 12:52:46 GMT

Hi,

Our project involves the use of MC9S12DP512. Till the time we were not using floating point operations because of limited application. Now we are building an application wherein we need to use interpolation methods algorithm. For that we want floating point operations support, but currrently i tried but event after declaring all variables float, the operations like division, multiplication is not resulting in float result.

Can anyone tell me the controller i specified supports floating point operations?if yes, is there any particular way i should follow and what is it???

Thanks n Regards,

Added p/n to subject.

Message Edited by NLFSJ on 2009-05-14 07:18 AM

Re: Floating point operations

Lundin — Thu, 14 May 2009 13:25:05 GMT

Float numbers are handled by software, not hardware.

You need to specify that you want to use float numbers when creating a new Codewarrior project, or they won't work.

Re: Floating point operations

kp2309 — Thu, 14 May 2009 13:52:04 GMT

While creating project i have selected floating point support.

But it is not giving the answer of any division or multiplication in float.

Re: Floating point operations

kef — Thu, 14 May 2009 15:20:30 GMT

Could you be more specific and explain what this means

kp2309 wrote:
i tried but event after declaring all variables float, the operations like division, multiplication is not resulting in float result.

Any code example + explanation what you get and what you expect to get?

Message Edited by kef on 2009-05-14 11:24 AM