Re: [Chicken-users] strange behavior with SRFI-19 date arithmetic

[Kon Lovett]

> On Mar 4, 2017, at 11:29 AM, Todd Roth <address@hidden> wrote:
> 
> When using the date arithmetic functions in srfi-19 I’m getting incorrect 
> results when specifying ‘days or any smaller DATE-KEY parameter. The ‘year 
> DATE-KEY returns the correct date/time.  Below is an example from a repl 
> session.  I’m seeing the same behavior when using the date-add-duration and 
> date-subtract-duration functions.  Has anyone else seen this?
> 
> 
> #;101> (time->date (current-time))
> #,(date 767000000000000000 56 10 14 4 3 2017 -18000 EST #f #f #f #f)
> 
> #;110> (date-adjust (time->date (current-time)) 1 'years)
> #,(date 226000000000000000 56 11 14 4 3 2018 -18000 EST #f #f #f #f)
> 
> #;152> (date-adjust (time->date (current-time)) 1 'days)
> #,(date 0 53 58 19 9 6 2047 -18000 EST #f #f #f #f)

Sorry, my fault. Hopefully all better now:

#;2> (define t1 (time->date (current-time)))
#;3> t1
#,(date 689000000 48 37 12 4 3 2017 -28800 PST #f #f #f #f)

#;4> (date-adjust t1 1 'days) 
#,(date 689000000 48 37 12 5 3 2017 -28800 PST #f #f #f #f)

version 3.4.1 should be available in a few hours.

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