libm tests
----------
+
http://www.netlib.org/fp/ucbtest.tgz
http://www.jhauser.us/arithmetic/TestFloat.html
http://cant.ua.ac.be/old/ieeecc754.html
http://www.loria.fr/~zimmerma/mpcheck/
http://gforge.inria.fr/projects/mpcheck/
http://people.inf.ethz.ch/gonnet/FPAccuracy/Analysis.html
+http://www.math.utah.edu/~beebe/software/ieee/
http://www.vinc17.org/research/testlibm/index.en.html
http://www.vinc17.org/research/fptest.en.html
tests in crlibm