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10/23/07 14:44
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 		 #146080 - Longs?
Responding to: ???'s previous message
Erik Malund said:

Floating poins is by definition not accurate. Use 32? bit fixed point.

Erik



You mean longs?, they consume 4 bytes just the same as single 32 bit floating point. Okay, processing time is going to take longer with FP than longs, but I have bags of MCU time available.Please read my post regarding calibration.

Cheers
Jason




List of 64 messages in thread
TopicAuthorDate
ADC last digit stability            01/01/70 00:00      
   DVM            01/01/70 00:00      
      DVM's only 10 bits?            01/01/70 00:00      
         Frequency response            01/01/70 00:00      
            Typically twice or more the sampling frequency            01/01/70 00:00      
               Missing the point            01/01/70 00:00      
   You usually don\'t _want_ a stable last digit.            01/01/70 00:00      
      Result            01/01/70 00:00      
         Hm.            01/01/70 00:00      
      Averaging/DSP/FIR filters            01/01/70 00:00      
         Math lecture ?            01/01/70 00:00      
            Can't use average-too slow            01/01/70 00:00      
               Analysis            01/01/70 00:00      
               already stated            01/01/70 00:00      
               Derivation            01/01/70 00:00      
                  The nitty gritty stuff            01/01/70 00:00      
                     Simulate using a spreadsheet            01/01/70 00:00      
                        Hi Russ and thanks for that            01/01/70 00:00      
                           My spreadsheet vs. your spreadsheet            01/01/70 00:00      
                              Unit test !            01/01/70 00:00      
                     As I said...            01/01/70 00:00      
                        Calibration?            01/01/70 00:00      
                           Horsefeathers            01/01/70 00:00      
                              Longs?            01/01/70 00:00      
                                 A long is more "accurate" than a float.            01/01/70 00:00      
                                    Yes it is, but....            01/01/70 00:00      
                                       _Known_ transfer functions.            01/01/70 00:00      
                                          FP pitfalls            01/01/70 00:00      
                                             The compiler isn't going to take care of that.            01/01/70 00:00      
                                                Mantissa fields            01/01/70 00:00      
                                                   Misunderstandings ?            01/01/70 00:00      
                                                      Adding FP's accurately            01/01/70 00:00      
                                 can you not read ?            01/01/70 00:00      
                           Nonsense ...            01/01/70 00:00      
                              Calculator?            01/01/70 00:00      
                     If you're really curious ...            01/01/70 00:00      
                        Climax time            01/01/70 00:00      
                           OOPS!!....            01/01/70 00:00      
                           Equations            01/01/70 00:00      
                              Quantisation            01/01/70 00:00      
                                 Works in unsigned integer, too:            01/01/70 00:00      
                                    Abstract?            01/01/70 00:00      
                                       Useful abstractions.            01/01/70 00:00      
                                          Nice talking with you, Christoph.            01/01/70 00:00      
                           What are the actual requirements ?            01/01/70 00:00      
                              re filters            01/01/70 00:00      
                              And moving forward            01/01/70 00:00      
               You can not due to Dither            01/01/70 00:00      
         Clueless ?            01/01/70 00:00      
            Just dump the LSB            01/01/70 00:00      
               Don't forget proper rounding.            01/01/70 00:00      
            Speaking of DSP            01/01/70 00:00      
         Fluke stability            01/01/70 00:00      
   Oh yes they do!            01/01/70 00:00      
   my take on this            01/01/70 00:00      
      Walk, don't run            01/01/70 00:00      
         :)            01/01/70 00:00      
      Hello Erik            01/01/70 00:00      
         have fun, Jason            01/01/70 00:00      
            I am having fun            01/01/70 00:00      
               Ok, you are aware of this            01/01/70 00:00      
                  He's learning            01/01/70 00:00      
                  Assumptions            01/01/70 00:00      
                     and I ...            01/01/70 00:00      

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