Subject: Re: Real numbers From: Dave Love <d.love@xxxxxxxx> Date: 13 Aug 1997 20:20:47 +0100 |
>>>>> "Tony" == Tony Graham <tgraham@xxxxxxxxxxxxxxxx> writes: Tony> Where is the definition of real numbers? What should the Tony> result be of (number? (sqrt -1)) if DSSSL does not support Tony> complex numbers? Probably a domain error would be most appropriate (typically most useful), but `(sqrt -1)' might return NaN which should answer #t to `number?' even though it's `not a number' in the IEEE 754 sense. You can find both behaviours in Scheme systems. DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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