Hi Sivahari,
please see the manpage of zgesv for more info:
http://linux.die.net/man/l/zgesv
INFO (output) INTEGER
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value
> 0: if INFO = i, U(i,i) is exactly zero. The factorization has been
completed, but the factor U is exactly singular, so the solution could
not be computed.
I think your equation is not solvable.
Best regards
Dee
Am 25.03.2014 09:51, schrieb Sivahari Nandakumar:
> The following error shown while calling funtion solve() to solve a linear
> system of equations.
>
> what(): LaLULinearSolveIP(LaGenMatDouble &A, &X, &B)Internal error in
> LAPACK: DGESV() Factor U was exactly singular
>
> How to resolve it?
>
>
>
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