LAPACK
3.10.0
LAPACK: Linear Algebra PACKage

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Functions/Subroutines  
subroutine  dlagtf (N, A, LAMBDA, B, C, TOL, D, IN, INFO) 
DLAGTF computes an LU factorization of a matrix TλI, where T is a general tridiagonal matrix, and λ a scalar, using partial pivoting with row interchanges. More...  