[Octave-bug-tracker] [bug #54445] fzero doesn't (always) accept initial value 0

[Olaf Till]

URL:
  <http://savannah.gnu.org/bugs/?54445>

                 Summary: fzero doesn't (always) accept initial value 0
                 Project: GNU Octave
            Submitted by: i7tiol
            Submitted on: Sat 04 Aug 2018 04:24:18 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error
                  Status: None
             Assigned to: None
         Originator Name: Olaf Till
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.4.0
        Operating System: GNU/Linux

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Details:

fzero doesn't (always) accept initial value 0 any more:

octave:4> fzero (@ (x) x + 1, 1)
ans = -1

octave:5> fzero (@ (x) x + 1, 0)
error: fzero: not a valid initial bracketing
error: called from
    fzero at line 178 column 5

Maybe unrelated (sorry):
octave:3> fzero (@ (x) x, 0)
warning: division by zero
warning: called from
    fzero at line 181 column 10
ans = 0





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