-0 is not indistinguishable from 0 in floating point math. Most ops return +0 and -0 can behave differently. I don't know of any examples where -0 is importan

-0 is not indistinguishable from 0 in floating point math. Most ops return +0 and -0 can behave differently. I don't know of any examples where -0 is important for machine learning, though.