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[Lapack] fast condition number of nonsquare matrix

 Answer to my self. I see in lapack manual pages
that all arguments are marked as input, input/output and
output. So all arguments that are 'input' aren't modified.


Quoting Dima Sorkin:
 Does DTRCON modify any entry in its input matrix "A" ?
It is not mentioned in it's manual page that it makes
any modification to "A", but I ask to be sure.

Thank you, regards,

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