On 04/26/2016 07:27 AM, Gianfranco <[email protected]> wrote:
> Hi, I'm attaching the spline.test directory and the build log on
Ubuntu yakkety i386
> (the default should be i686 now) thanks, Gianfranco
Gianfranco, thanks for the bug report on `spline' in plotutils. It's not
at all serious, fortunately.
What's happening is this: the `make test' procedure for plotutils
executes the `spline.test' script in the test directory, which runs the
command
echo 0 1 0.5 0.75 -0.25 0 | ../spline/spline -a -T 1 -n 120 --precision
5 -p >spline.out
The output file, spline.out, is then compared against the expected
output, which is in the file spline.xout. They don't exactly match on
your system, which is why the test failed.
If you do a `diff spline.xout spline.out' to compare the two files,
you'll see this:
1c1
< 0 0
---
> 0 -9.5518e-17
121c121
< 5 0
---
> 5 -9.5518e-17
The difference between -9.5518e-17 and zero (which are y-values
generated by `spline', at the endpoints of an interpolatory range) is
not a major one!
However, this ought to be fixed in the next release. (This numerical
bug appears on some systems but not on others, for unknown reasons; so
the easiest way to deal with it would be to modify the test script
`spline.test', to ignore the first and last lines when comparing
spline.out with spline.xout.)
Best, Rob
_______________________________________________
Bug-plotutils mailing list
[email protected]
https://lists.gnu.org/mailman/listinfo/bug-plotutils
