DPTSL(3F)
DPTSL - DPTSL, given a positive definite symmetric tridiagonal matrix and a right hand side, will find the solution.
As shipped in IRIX 6.5.7. Unchanged since IRIX 6.5.
NAME DPTSL - DPTSL, given a positive definite symmetric tridiagonal matrix and a right hand side, will find the solution. SYNOPSYS SUBROUTINE DPTSL(N,D,E,B) DESCRIPTION On Entry N INTEGER is the order of the tridiagonal matrix. D DOUBLE PRECISION(N) is the diagonal of the tridiagonal matrix. On output D is destroyed. E DOUBLE PRECISION(N) is the offdiagonal of the tridiagonal matrix. E(1) through E(N-1) should contain the offdiagonal. B DOUBLE PRECISION(N) is the right hand side vector. On Return B contains the solution. LINPACK. This version dated 08/14/78 . Jack Dongarra, Argonne National Laboratory. No externals Fortran MOD