Hello, I wanted the relationship between the number of iteration vs LUT table entry. Because i wanted to estimate the arc tan to a accuracy of 1 microradians. In my simulation i found that even if the iteration is around 25 iteration i could not achieve the 1 microradian accuracy.
My LUT i have represented using 32 bit and the two number whos atan is to be obtained is also 32 bit(all fixed point).
Please suggest a solution with regards praveen
Somewhere I have a databook from many years ago with a ROM look-up table for sine. This was when ROMs were much smaller than today, and pretty much the way it worked was to have one that was the high bits of the sine, and another that did linear interpolation.
What domain and range do you expect for your arctan? For smaller values it shouldn't be too hard, but for larger values it gets much harder. What form is the input in, and what form do you expect the output to be?
-- glen
Go to my web site,
Jerry
That link seems to be brokken--it redirects to .
KP
Copy/paste mysteriously failed. (Operator error, but how?) The correct URL is
Jerry
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