---
name: "continuation_option"
section: "3rheolef"
platform: "linux"
package: "librheolef-dev"
version: "7.2-4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/continuation_option/3rheolef"
---

# continuation\_option(3rheolef)

continuation solver options (rheolef-7.2)

## NAME

continuation\_option - continuation solver options (rheolef-7.2)

## DESCRIPTION

This class is used to send options to the **continuation(3)** algorithm.

## OPTIONS

`tol` \
 `max_iter`

 These options are transmitted to the **damped\_newton(3)** algorithm during the **continuation(3)** algorithm.

`ini_delta_parameter` \
 `max_delta_parameter` \
 `max_delta_parameter`

 These options control the **continuation(3)** evolution along the branch of solution. When using the Keller continuation, these options control the arc-length parameter.

`n_adapt`

 When non-zero, it allows one to activate the optional mesh adaptation feature (see **adapt(3)**) embedded in the continuation algorithm.

## TODO

Complete the documentation of all the others options.

## IMPLEMENTATION

This documentation has been generated from file main/lib/continuation\_option.h

The **continuation\_option class is simply derivated from the** `adapt_option` **one (see adapt(3)):**

```
struct continuation_option : adapt_option {
  Float ini_direction;
  Float kappa;
  Float tol;
  size_t max_iter;
  size_t newton_max_iter;
  Float min_delta_parameter;
  Float max_delta_parameter;
  Float ini_delta_parameter;
  Float theta_decr;
  Float theta_incr;
  Float theta_variation;
  size_t min_delta_parameter_successive_count_max;
  Float tol_cos_angle;
  bool do_prediction;
  bool do_check_going_back;
  size_t n_adapt;
  continuation_option(const adapt_option& aopt = adapt_option());
  void check() const;
};
```

## AUTHOR

**Pierre  Saramito  \<Pierre.Saramito@imag.fr\>**

## COPYRIGHT

**Copyright   (C)  2000-2018  Pierre  Saramito  \<Pierre.Saramito@imag.fr\>** **GPLv3+: GNU GPL version 3 or later  \<http://gnu.org/licenses/gpl.html\>.** **This  is  free  software:  you  are free to change and redistribute it.** **There is NO WARRANTY, to the extent permitted by law.**