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???
07/01/05 04:35
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Msg Score: +1
 +1 Good Answer/Helpful		 #96361 - floating point in ISRs
Responding to: ???'s previous message
Andy Neil said:
But it has been explained why using a floating-point value is not a good idea:

"not only is the use of floating-point unnecessary - it could actually give you the wrong result!"
http://www.8052.com/forum/read.phtml?id=96034

The reason it's not a good idea due to the fundamental nature of the implementation of floating-point arithmetic - thus it is not compiler-specific, nor even processor-specific.


Also, never use floating point in an ISR ...

-=a

List of 31 messages in thread
TopicAuthorDate
defination under Keil            01/01/70 00:00      
   int/float            01/01/70 00:00      
   IAR PreProcessor VS Keil            01/01/70 00:00      
      confusion            01/01/70 00:00      
         just doing text subistituons I guess            01/01/70 00:00      
            un            01/01/70 00:00      
               preprocessor            01/01/70 00:00      
                  Some confusion abounds...            01/01/70 00:00      
                     Wrong again!            01/01/70 00:00      
                        Take is easy...            01/01/70 00:00      
                           The important bit...?            01/01/70 00:00      
         Floating-point not supported in eval            01/01/70 00:00      
      preprocessor maths            01/01/70 00:00      
         I was being carelessly loose............            01/01/70 00:00      
            Keil Test            01/01/70 00:00      
            Save you the trouble            01/01/70 00:00      
               Oh            01/01/70 00:00      
         preproccessor maths            01/01/70 00:00      
            ##########            01/01/70 00:00      
               thats the confusion            01/01/70 00:00      
                  In context            01/01/70 00:00      
                     Thanks            01/01/70 00:00      
                  Think about it            01/01/70 00:00      
   Aside - 'C' #define names            01/01/70 00:00      
      good coding practices            01/01/70 00:00      
   Thank you            01/01/70 00:00      
      Alternatively...            01/01/70 00:00      
         re: Alternatively...            01/01/70 00:00      
      Not a good idea            01/01/70 00:00      
         Not a good idea            01/01/70 00:00      
         floating point in ISRs            01/01/70 00:00      

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