[Pkg-octave-devel] Bug#874116: Bug#874116: Bug#874116: Bug#874116: octave-tisean FTBFS on !amd64: test failure

[Rafael Laboissière]

* Adrian Bunk <bunk at debian.org> [2017-09-03 19:01]:

> On Sun, Sep 03, 2017 at 05:52:26PM +0200, Rafael Laboissière wrote:
>
>> It seems that many of the unit test failures happen when the function henon 
>> is involved.  This function computes the Henon map with a default transient 
>> initial period of 10000 samples.  The computation in the henon function is 
>> iterative and my guess is that the results are sensitive to the 
>> architecture-specific floating point representation.  Would -ffloat-store 
>> help here?
>
> -ffloat-store sometimes matters on i386, but on most architectures it 
> is a complete nop.

Thanks for your quick reply.  Are there other sources of differences in 
the representation of float numbers across the architectures, that might 
explain the different results in the henon function?

Rafael