D2a2a : Tridiagonal

F01LEF	$L U$ factorization of real tridiagonal matrix
F04BCF	Computes the solution and error-bound to a real tridiagonal system of linear equations
F04LEF	Solution of real tridiagonal simultaneous linear equations (coefficient matrix already factorized by F01LEF)
F07CAF	Computes the solution to a real tridiagonal system of linear equations
F07CBF	Uses the $L U$ factorization to compute the solution, error-bound and condition estimate for a real tridiagonal system of linear equations
F07CDF	$L U$ factorization of real tridiagonal matrix
F07CEF	Solves a real tridiagonal system of linear equations using the $L U$ factorization computed by F07CDF
F07CGF	Estimates the reciprocal of the condition number of a real tridiagonal matrix using the $L U$ factorization computed by F07CDF
F07CHF	Refined solution with error bounds of real tridiagonal system of linear equations, multiple right-hand sides