Count Bits, Choose High or Low?


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  1. #3
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    IF DT's routine is too complicated for you, which usually is for me, then take a look at this one.
    This should be faster then yours I guess.

    Code:
    <font color="#000000">ErrorCheck:
        HighCount = <font color="#FF0000">0
        </font>LowCount  = <font color="#FF0000">8
        </font>i         = <font color="#FF0000">0
    
        </font><font color="#000080"><b>WHILE </b></font>i &lt; <font color="#FF0000">8
              </font>n = testByte.<font color="#FF0000">0</font>[i]          <font color="#000080"><i>'Read bit.
              </i></font>LowCount  = LowCount - n   <font color="#000080"><i>'sub. bits.
              </i></font>HighCount = HighCount + n  <font color="#000080"><i>'add bits.
              </i></font>i = i + <font color="#FF0000">1                  </font><font color="#000080"><i>'incr. bit.
        </i><b>WEND
    
    
        </b></font>testByte = <font color="#FF0000">$00                    </font><font color="#000080"><i>'Assign value.
        </i><b>IF </b></font>HighCount &gt;= LowCount <font color="#000080"><b>THEN </b></font>testByte = <font color="#FF0000">$FF  </font><font color="#000080"><i>'change value if true.
             
    </i><b>RETURN
    </b></font>
    Edit: I did not understand the logic behind this statement:
    "This will eliminate any bit errors as long as it's not more than 3 bit errors per byte."
    You may cut the loop off if this is true and reduce the time into half of what it takes.

    -------------------
    Last edited by sayzer; - 2nd January 2009 at 09:22.
    "If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte

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