[Octave-bug-tracker] [bug #47865] cplxpair(array, tol) uses wrong units for tol

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?47865>

                 Summary: cplxpair(array,tol) uses wrong units for tol
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Fri 06 May 2016 12:33:22 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Gene Petilli
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

The documentation for cplxpair was updated to say that the default value for
tol is 100*eps (which matches the matlab documentation) but the matlab
documentation also says that 0<= tol <1.  The 100*eps is the value of tol, not
the multiplier of eps to compute tol.  The cplxpair code line 117 uses tol*eps
but perhaps it should use eps/(1-tol)?  As an example, for matlab we use
tol=0.0001 and octave errors unless we us 10000

development version from 5/6/16




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