Taking an integer to a floating point power

nrk752

I am trying to calculate the result of this formula in a Javelin program:
y = 153.52 * x ^ -0.1775
where x is an integer.· In Float32Math it is possible to take a floating point number to an integer power, and to take e to a floating point power, but how would I go about taking an integer to a floating point power?· My only other solution at this point is to use a set of peicewise linear formulas that approximate the curve within limited regions. ·

Peter Verkaik

y = 153.52 * (x ^ -0.1775)

x = e ^ z

z = logE(x)

y = 153.52 * (e ^ (-0.1775*z))

regards peter

nrk752

Ok, thanks, but how do I take the natural log of a float on a Javelin? I don't see a function for it.

Peter Verkaik

x = e ^ z

log10(x) = z*log10(e)

z = log10(x)/log10(e)

regards peter