status: withdrawn (2005-11-30)
keywords: Numbers
Many Scheme implementations support exact arbitrary-precision integer arithmetic as well as exact rational number computation. This SRFI extends the rational numbers of R5RS by adding two rational infinities (1/0, -1/0).
With infinities added to the number system we find that division by zero "works". It lets initialization of variables precede bounds checks and gives flexibility in placement of those checks.