Re: M4RI: mzd_solve_left()

[Martin R. Albrecht]

Hi Song,

mhh, it’s a bit hard to tell with that amount of information.

Perhaps try recompiling with ./configure --enable-debug and
CFLAGS="-ggdb -O0" and see what a debugger tells you?

Cheers,
Martin

Song Ling (Dr) writes:
> Hi Martin,
>
>
>
> I'm using M4RI lib to solve matrix problems, and I come across a situation where mzd_solve_left() doesn't work.
>
>
>
> I have AX=b, A->nrows = 2056, A->ncols=1600, rank(A)=1600, and rank(A,b)=1600.
>
>
>
> So, there is a unique solution for X. but after I apply mzd_solve_left(A,b), b doesn't change. b is still the same as before.
>
>
>
> I also test mzd_solve_left() on a toy example, and it works. b is really replaced with the solution.
>
>
>
> What is wrong?
>
>
>
> Best regards,
>
>
>
> Song Ling
>
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