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???
09/03/07 16:11
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 		 #143952 - Math
Responding to: ???'s previous message
The problem is not logs in ASM. The problem is floating point in ASM. How to convert a number to a log can be found in a high or school or college math book, or goggle. Then what? the number must be converted to one of the many floating point formats (32 bit IEEE is popular).
With a little goggling I found some info:
http://en.literateprograms.org/Logarithm...8Python%29
And a suggestion to use a Talyor series.

List of 30 messages in thread
TopicAuthorDate
1) Log computation, 2) LCD requirement            01/01/70 00:00      
   Yes            01/01/70 00:00      
      Why would you doubt it?            01/01/70 00:00      
      Yes            01/01/70 00:00      
         Doesn't have to be floating point            01/01/70 00:00      
            's the one            01/01/70 00:00      
               the good old Intel FP51 package            01/01/70 00:00      
         Should be in high level language, thanks..            01/01/70 00:00      
            you can steal it...            01/01/70 00:00      
               need floating-point log? - YES            01/01/70 00:00      
                  Fixed point ?            01/01/70 00:00      
                     RE: Fixed point ?            01/01/70 00:00      
                        And what is the input voltage range?            01/01/70 00:00      
                           RE: Aside: dB equivalent of voltage            01/01/70 00:00      
                              my point is...            01/01/70 00:00      
                                 Who remembers log tables?            01/01/70 00:00      
                              Already answered            01/01/70 00:00      
                        So use cB instead!            01/01/70 00:00      
                        Aside: dB equivalent of voltage            01/01/70 00:00      
   How to find log in assembly?            01/01/70 00:00      
      Hint            01/01/70 00:00      
      Math            01/01/70 00:00      
   Log calculation in ASM            01/01/70 00:00      
      Implementation and precision            01/01/70 00:00      
         Correct precision            01/01/70 00:00      
            Brilliant work            01/01/70 00:00      
               Absolutely!            01/01/70 00:00      
   Fixed-point log2, without lookup table.            01/01/70 00:00      
      To Mr Franck            01/01/70 00:00      
         Source for the algorithm.            01/01/70 00:00      

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