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| From: Thomas Bushnell BSG <tb@xxxxxxxxxx> | Date: Sun, 23 Oct 2005 12:39:43 -0700 | | Aubrey Jaffer <agj@xxxxxxxxxxxx> writes: | | > When different NaNs are returned depending on the circumstances | > creating them, I would like my implementation to display them | > like this: | > | > #<not-a-number expt> | | Sure, that seems fine. We could mandate that as the readable written | representation! It should *not* be a readable representation. That serves only to mask mathematical errors in saved datasets. As Bakul Shah wrote: "... IEEE754 says NaN is the result of an *invalid* operation, when an operation's operands lie outside its domain." And literal NaNs will find precious little use in programs if all equality predicates return #f for them!