bugGNU Octave - Bugs: bug #49838, ode23 and ode45 don't correctly...


bug #49838: ode23 and ode45 don't correctly handle a constant mass matrix

Submitted by:  Bill Greene <billgreene>
Submitted on:  Tue 13 Dec 2016 08:33:51 PM UTC  
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  None Assigned to:  Carlo de Falco <cdf>
Originator Name:  Open/Closed:  Open
Release:  4.2.0 Operating System:  Any

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Tue 13 Dec 2016 08:33:51 PM UTC, original submission:

The Mass option is not being correctly handled.

This is basically the same as the problem reported against the
odepkg versions of these functions in this bug report:

But I'm resubmitting since these functions are now part of
core Octave.

I have attached two patch files that fix this problem.

Bill Greene <billgreene>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #39215:  ode23.patch added by billgreene (2KiB - application/octet-stream)
file #39216:  ode45.patch added by billgreene (1KiB - application/octet-stream)


Depends on the following items: None found

Items that depend on this one: None found


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  • -email is unavailable- added by cdf (Updated the item)
  • -email is unavailable- added by billgreene (Submitted the item)

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-12-14 cdf Assigned toNone => cdf
    2016-12-13 billgreene Attached File- => Added ode23.patch, #39215
        Attached File- => Added ode45.patch, #39216

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