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Document surprising behavior of in-range with floats and zero.

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This commit is contained in:
Vincent St-Amour 2017-04-17 17:58:46 -05:00
parent fae55e83e2
commit c652afa894
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pkgs/racket-doc/scribblings/reference/sequences.scrbl
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@ -180,6 +180,11 @@ each element in the sequence.
@examples[#:label "Example: sum of even numbers" #:eval sequence-evaluator @examples[#:label "Example: sum of even numbers" #:eval sequence-evaluator
(for/sum ([x (in-range 0 100 2)]) x)] (for/sum ([x (in-range 0 100 2)]) x)]
When given zero as @racket[step], @racket[in-range] returns an infinite
sequence. It may also return infinite sequences when @racket[step] is a very
small number, and either @racket[step] or the sequence elements are
floating-point numbers.
} }