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Subject: Re: Complex arg-trig functions
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Having brooded over the code for too many weeks, I now think I have 
finished my complex arg-trig functions.  I have also written versions 
for float and long.  So I am ready to have the code reviewed.

http://people.freebsd.org/~stephen/

The long versions require a logl and a log1pl, which I faked using mpfr.

The float versions are more complicated, because FLT_EPSILON is too 
close to the 4th root of FLT_MIN.  It is simpler to make the float 
versions wrappers for the double versions.  But I wrote the float 
versions anyway, just in case some purist insists that the wrapper 
approach is morally wrong.