[Octave-bug-tracker] [bug #53649] tf could be more tolerant to complex coefficient

[Charles Praplan]

URL:
  <http://savannah.gnu.org/bugs/?53649>

                 Summary: tf could be more tolerant to complex coefficient
                 Project: GNU Octave
            Submitted by: charprap
            Submitted on: Sat 14 Apr 2018 07:35:22 AM UTC
                Category: Libraries
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Missed Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: Charles Praplan
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.2
        Operating System: Microsoft Windows

    _______________________________________________________

Details:

Function tf could be more tolerant to complex coefficients in case of residual
imaginary part due to arithmetic rounding.

See example below.

A warning would be better.

SYS=tf([0 0 0.253+j*1e-18] , [1, -1.158, 0.411], 1e-4)




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?53649>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/