It is not by design, it is just that originally it was developed with 
floating point arithmetic in mind. Please change it to <= in the branch 
and we will propagate it. Make a separate commit just for this so we 
keep track of the change in case something goes bad. Also run all the 
tests before submitting a pull request. If you don't plan to sumbit a 
pull request please create a new issue so that we deal with it. 

-Nasos 

On 03/04/2016 12:46 AM, Shangtong Zhang wrote: 
> Hello, 
> 
> I’m trying to contribute to toeplitz matrix, here is my prototype 
> https://github.com/ShangtongZhang/ublas/blob/toeplitz/include/boost/numeric/ublas/toeplitz.hpp 
> 
> However I have a problem. 
> When I execute code 
> matrix<int> m_new(m) 
> where m is a toeplitz matrix, it will raise exception. 
> When matrix_assign is executed, it calls ‘equals' in matrix_assign.hpp 
> https://github.com/ShangtongZhang/ublas/blob/toeplitz/include/boost/numeric/ublas/detail/matrix_assign.hpp line 
> 32 
> However the parameter epsilon is 0, norm_inf (e1 - e2 ) < 0 will never 
> succeed. 
> So it will return false and raise exception. 
> Same things happen even m is a banded matrix. 
> Why is it ‘<' rather than '<= '? Is it by design? 
> 
> Thanks, 
> 
> Shangtong Zhang, 
> Senior Student, 
> School of Computer Science, 
> Fudan University, PRC. 
> 
> 
> 
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