ok, i can´t get a better polynom. With the polynom a+b*x+c*y+d*x^2+e*x*y+f*y^2+g*x^3+h*x^2*y+i*x*y^2+j*y^3+k*x^4+l*x^3*y+m*x^2*y^2+n*x*y^3+o*y^4 and
a=2029.88808308354
b=106.090966107482
c=1052.34077029347
d=-674.870916986877
e=6.23776156391548
f=1464.53852573267
g=272.284647887558
h=84.5971312459074
i=-107.333218843179
j=-197.518327994408
k=-30.3172098568589
l=-28.2290161372278
m=-16.6987890621752
n=19.9948187485705
o=7.03235515902020
with x=Range, y=Fmod and using matlab the máximum relative error than it polynom gets is of 13%, so i think that your short polynom is the best choice (y)(y)(y)
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Re: 74LS629
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74LS629
