Pre-processor for the routine ?gesvj, applies Jacobi rotations targeting only particular pivots.
Checks if the infinity and NaN arithmetic is safe. Called by ilaenv.
Used by sstedc/dstedc. Merges eigenvalues and deflates secular equation. Used when the original matrix is tridiagonal.
Computes the QL factorization of a general matrix.
Applies a vector of plane rotations with real cosines and real/complex sines from both sides to a sequence of 2-by-2 symmetric/Hermitian matrices.
Finds the collaborators of a process.
Computes the product U*UT(U*UH) or LT*L (LH*L), where U and L are upper or lower triangular matrices (blocked algorithm).
Estimates the Skeel condition number for a general matrix.
Computes a matrix-vector product for complex vectors using a complex symmetric packed matrix.
Solves a system of linear equations with a diagonally dominant-like tridiagonal distributed matrix using the factorization computed by p?dttrf.
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