pcp
[Top] [All Lists]

Re: Floating point problem

To: Martin Spier <mspier@xxxxxxxxxxx>
Subject: Re: Floating point problem
From: fche@xxxxxxxxxx (Frank Ch. Eigler)
Date: Mon, 28 Jul 2014 08:39:59 -0400
Cc: pcp@xxxxxxxxxxx, Amer Ather <aather@xxxxxxxxxxx>, Coburn Watson <cwatson@xxxxxxxxxxx>, Brendan Gregg <bgregg@xxxxxxxxxxx>
Delivered-to: pcp@xxxxxxxxxxx
In-reply-to: <CAEp4+dU2kE9JJztBPc=N5oSyoEyBvN5Of19rohC3DxXGeomuRw@xxxxxxxxxxxxxx> (Martin Spier's message of "Fri, 25 Jul 2014 17:58:51 -0700")
References: <CAEp4+dU2kE9JJztBPc=N5oSyoEyBvN5Of19rohC3DxXGeomuRw@xxxxxxxxxxxxxx>
User-agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux)
mspier wrote:

> Ran into a small problem with "value" floating point precision on pmwebd json
> responses.
> [...]
>       "instances": [
>         {
>           "value": 7.94874E+10
>         }
> [...]

Neither fche/pmwebd nor dev branch pmwebds appear to do any
unnecessary casting of pmExtractValue'd integers to floating
point, so that transformation must be done beneath pmwebd.

- FChE

<Prev in Thread] Current Thread [Next in Thread>