Oh I see, you're talking about floating point. So basically ICC has -ffast-math (or -funsafe-math-optimizations) on by default, and you can turn it off with an

Oh I see, you're talking about floating point. So basically ICC has -ffast-math (or -funsafe-math-optimizations) on by default, and you can turn it off with an explicit flag? I see this as more of a philosophical difference than a material one since you can just add or remove the flag on either one...