math: add fma(x,y,z) test cases for z=0 and x*y rounds to -0
[libc-test] / src / math / special / atan2.h
2013-08-15 Szabolcs Nagyatan2 underflow tests
2013-08-12 Szabolcs Nagymath: fenv status flag fixes
2012-11-12 Szabolcs Nagymath: add special case test vectors