From help-octave-request at bevo dot che dot wisc dot edu  Thu Nov 26 16:19:56 1998
Subject: lsode problem
From: Suttipan Limanond <limanond at enws626 dot eas dot asu dot edu>
To: help-octave at bevo dot che dot wisc dot edu
Date: Thu, 26 Nov 1998 16:23:35 -0600

Hi:

I wonder if someone can help me with this `lsode' problem.

I am trying to use the `oregonator.oct' with lsode, as follows:

| octave:4> y = lsode("oregonator", x, t)

I got the following message:

| panic: impossible state reached in file `pt-fvc.cc' at line 802
| error: Abort trap -- stopping myself...
| attempting to save variables to `octave-core'...
| save to `octave-core' complete

| Abort trap (core dumped)

The `oregonator.oct' seems to work fine since

| octave:1> oregonator([1,2,3],0)

returns

| ans =
|
|   77.269353
|   -0.012942
|   -0.322000

On the other hand, when I called `lsode' without any arguments, I got the
message

| panic: impossible state reached in file `pt-fvc.cc' at line 603
| error: Abort trap -- stopping myself...
| attempting to save variables to `octave-core'...
| save to `octave-core' complete

| Abort trap (core dumped)

instead of the `lsode' usage information.

Thank you very much,

Suttipan Limanond.