#8750: numerical noise on solaris
-----------------------------+----------------------------------------------
   Reporter:  jhpalmieri     |       Owner:  drkirkby    
       Type:  defect         |      Status:  needs_review
   Priority:  blocker        |   Milestone:  sage-4.4    
  Component:  solaris        |    Keywords:              
     Author:  John Palmieri  |    Upstream:  N/A         
   Reviewer:                 |      Merged:              
Work_issues:                 |  
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Old description:

> I'm getting noise on doctests on Solaris.  One is straightforward to fix
> (chmm.pyx).  For the other (time_series.pyx), on Solaris I get
> {{{
> sage -t  -long devel/sage/sage/finance/time_series.pyx
> **********************************************************************
> File "/home/palmieri/t2/sage-4.4.alpha2/devel/sage-
> main/sage/finance/time_series.pyx", line 691:
>     sage: finance.TimeSeries([1,0,3]).log()
> Expected:
>     [0.0000, -inf, 1.0986]
> Got:
>     [0.0000, -Inf, 1.0986]
> **********************************************************************
> }}}
> So instead of {{{-inf}}}, it's printing {{{-Inf}}}.  However, if I do
> {{{
>    sage: finance.TimeSeries([1,0,3]).log()[1]
> }}}
> then I see {{{-inf}}}.  So I've changed the doctest to use this instead.
>
> Oh, and actually reading the docstring, there is an optional argument
> {{{eps}}} which looks something like an error bound.  By default it's set
> to 1e-12, and it looks to me like I've added the dots in the 12th place,
> so now I really don't have any problem with this change.

New description:

 I'm getting noise on doctests on Solaris.  One is straightforward to fix
 (chmm.pyx).  For the other (time_series.pyx), on Solaris I get
 {{{
 sage -t  -long devel/sage/sage/finance/time_series.pyx
 **********************************************************************
 File "/home/palmieri/t2/sage-4.4.alpha2/devel/sage-
 main/sage/finance/time_series.pyx", line 691:
     sage: finance.TimeSeries([1,0,3]).log()
 Expected:
     [0.0000, -inf, 1.0986]
 Got:
     [0.0000, -Inf, 1.0986]
 **********************************************************************
 }}}
 So instead of {{{-inf}}}, it's printing {{{-Inf}}}.  However, if I do
 {{{
    sage: finance.TimeSeries([1,0,3]).log()[1]
 }}}
 then I see {{{-inf}}}.  So I've changed the doctest to use this instead.

--

Comment(by jhpalmieri):

 I accidentally added this to the description of the ticket instead of to
 my reply about the change to chmm:

 Oh, and actually reading the docstring, there is an optional argument eps
 which looks something like an error bound. By default it's set to 1e-12,
 and it looks to me like I've added the dots in the 12th place, so now I
 really don't have any problem with this change.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8750#comment:4>
Sage <http://www.sagemath.org>
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