1 test vectors from ucbtest/ucblib
2 http://www.netlib.org/fp/ucbtest.tgz
3 powd.input is fixed to match posix
7 func1 round check except in out
8 func2 round check except in1 in2 out
10 func1: function with 1 input arg
11 func2: function with 2 input args
21 nb = nearby (abserr < 10 ulp)
22 vn = very near (abserr < 3ulp)
34 ? = next except is optional
39 single precision: n = 1
40 double precision: n = 2