Nonlinear Solver Routine Naming Conventions

The TR routine names have the following structure:

      <character><name>_<action>( )

where

• <character> indicates the data type:

  s

  real, single precision

  d

  real, double precision

• <name> indicates the task type:

  trnlsp

  nonlinear least squares problem without constraints

  trnlspbc

  nonlinear least squares problem with boundary constraints

  jacobi

  computation of the Jacobian matrix using central differences

• <action> indicates an action on the task:

  init

  initializes the solver

  check

  checks correctness of the input parameters

  solve

  solves the problem

  get

  retrieves the number of iterations, the stop criterion, the initial residual, and the final residual

  delete

  releases the allocated data