http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59714
--- Comment #4 from Michael Hudson-Doyle <michael.hudson at linaro dot org> --- OK, so I should stop talking about accurate and instead talk about surprising :-) I think it is pretty surprising that x/x != 1+0i for (I think) all x where the ratio between the real and imaginary parts is not a power of 2 (put another way, an error of 1ulp when the accurate result is 0 is more surprising than when the accurate result is non-zero). In general, fma makes it hard to reason about expressions like "a*b-c*d" -- which of the multiplications is being done at the higher precision? But I guess arguing to fp-contract to default to off is a war I don't want to get into fighting.
