Works for me if I omit the '_.' in front of the starttime/stoptime variables
(and use "${sw.diff}").
Janis
> Date: Sat, 1 Aug 2009 06:02:16 +0200
> From: roland.ma...@nrubsig.org
> To: ast-users@research.att.com
> Subject: [ast-users] Discipline functions for float vs. $ printf "%f"
> s_t.varname # ...
>
>
> Hi!
>
> ----
>
> The following testcase contains a simple "stopwatch" type which tracks
> the time between the functions "start" and "stop" and maintains a
> variable "diff" which contains the difference:
> -- snip --
> typeset -T stopwatch_t=(
> float starttime=nan
> float stoptime=nan
> float diff=nan
>
> function start
> {
> (( _.starttime=SECONDS ))
> return 0
> }
> function stop
> {
> (( _.stoptime=SECONDS ))
> return 0
> }
> function reset
> {
> (( _.starttime=nan , _.stoptime=nan ))
> }
> function diff.get
> {
> (( .sh.value=_.stoptime-_.starttime ))
> print -u2 "#mark"
> return 0
> }
> )
>
> stopwatch_t sw
>
> sw.start
> sleep 2.1
> sw.stop
>
> printf "time=%f\n" sw.diff
> -- snip --
>
> However when I run this testcase with ast-ksh.2009-06-22 it only prints:
> -- snip --
> time=nan
> -- snip --
> ... while the expected output should AFAIK be:
> -- snip --
> #mark
> time=2.1000
> -- snip --
>
> AFAIK two things go wrong there:
> 1. Using $ printf "time=%f\n" sw.diff # to call the discipline method
> stopwatch_t.diff.get does not work, however it works when I replace
> "sw.diff" with "${sw.diff}"
> 2. The somehow the value assigned to ".sh.value" does not make it to the
> "printf" builtin... but I am not sure why this happens...
>
> ----
>
> Bye,
> Roland
>
> --
> __ . . __
> (o.\ \/ /.o) roland.ma...@nrubsig.org
> \__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer
> /O /==\ O\ TEL +49 641 3992797
> (;O/ \/ \O;)
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