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<P align=justify><FONT face="Arial, Helvetica, sans-serif"
size=2><I><B>Applications</B></I></FONT></P>
<UL>
<LI><FONT face="Arial, Helvetica, sans-serif" size=2>astrometry</FONT>
<LI><FONT face="Arial, Helvetica, sans-serif" size=2>geophysics</FONT>
<LI><FONT face="Arial, Helvetica, sans-serif" size=2>orbitography</FONT>
<LI><FONT face="Arial, Helvetica, sans-serif"
size=2>positionning</FONT></LI></UL>
<DIV>IREP</DIV>
<DIV><A
href="http://hpiers.obspm.fr/eop-pc/">http://hpiers.obspm.fr/eop-pc/</A></DIV>
<DIV> </DIV>
<DIV>
<DIV><STRONG><U>Has anyone used them in a commercial
application?</U></STRONG></DIV></DIV>
<DIV> </DIV>
<DIV>I think I have an efficent method to include leap seconds however, but
don't plan to program it until I know there is a need..</DIV>
<DIV> </DIV>
<DIV>Anyone have ideas on how to notfiy the software to include or exclude leap
seconds?</DIV>
<DIV> </DIV>
<DIV>Solution for including leaps seconds:</DIV>
<DIV> Convert the year to binary value.</DIV>
<DIV> If the months are the first
quarter of the year
<DIV> mutiply
by 4.</DIV> If the months
are the second quarter of the year</DIV>
<DIV> Multiply
by 4 and add 1.</DIV>
<DIV> If the third quarter</DIV>
<DIV> Multiply
by 4 and add 2</DIV>
<DIV> If the fourth quarter
</DIV>
<DIV> Multiply
by 4 and add 3</DIV>
<DIV>Us the binary result as an index into a table.</DIV>
<DIV> Each postion of the table contains the cumulative
binary leap seconds.</DIV>
<DIV> Add the cumulative leap seconds to the seconds in
the date.</DIV>
<DIV>For every year the table will have four entrys per
year. for 03-31, 06:30, 09-30 12-31 </DIV>
<DIV> </DIV>
<DIV>One bytes allows 256 cumulative seconds.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
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