| e04xac | Computes an approximation to the gradient vector and/or the Hessian matrix |
| f11gec | Real sparse symmetric linear systems, preconditioned conjugate gradient or Lanczos method or the MINRES algorithm |
| f11gsc | Complex sparse Hermitian linear systems, preconditioned conjugate gradient or Lanczos |
| f11jqc | Solution of complex sparse Hermitian linear system, conjugate gradient/Lanczos method, preconditioner computed by f11jnc (Black Box) |
| f11jsc | Solution of complex sparse Hermitian linear system, conjugate gradient/Lanczos method, Jacobi or SSOR preconditioner (Black Box) |