Cyclic Tridiagonal Systems

 

On the Numerical Solution of Cyclic Tridiagonal Systems

Evans Algorithm	Temperton Algorithm 4 General case	Temperton Algorithm 4 Const. Coeff. case
EVANS_INIT.f90 Prefactorization routine	ALG4_INIT.f90 Prefactorization routine	ALG4_CONST_INIT.f90 Prefactorization routine
EVANS_SOLV.f90 Solution routine	ALG4_SOLV.f90 Solution routine	ALG4_CONST_SOLV.f90 Solution routine
EVANS_TEST.f90 Driver routine	ALG4_TEST.f90 Driver routine	ALG4_CONST_TEST.f90 Driver routine

Note: all the Fortran 90 subroutines given above are valid ONLY for real, symmetric, diagonally dominant coefficient matrices.