Aubrey Jaffer scripsit:

> SRFI-77 states:
>
>   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].

Thanks for pointing this out.  The SRFI is of course wrong:  the paradigm
case of +nan.0 is (/ 0.0 0.0), and the value of this is not any of the
real numbers.

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