| This SRFI regards +nan.0 as a real number whose value is so | indeterminate that it might represent any real number within the | closed interval [-inf.0,+inf.0]. That sentence implies that (<= -inf.0 +nan.0 +inf.0). But that is not true in IEEE-754 arithmetic as compiled by gcc running on an Intel(R) Pentium(R) 4 CPU.