https://www.intel.com/content/www/us/en/docs/onemkl/developer-reference-fortran/2023-0/la-syrcond-x.html
?la_syrcond_x
Computes the infinity norm condition number of op(A)*diag(x) for symmetric indefinite matrices.
lax
https://www.intel.com/content/www/us/en/docs/onemkl/developer-reference-fortran/2025-2/la-syrcond.html
?la_syrcond
Estimates the Skeel condition number for a symmetric indefinite matrix.
la