class GSL::ODE::Driver

• GSL::ODE::Driver
• GSL::Object
• Reference
• Object

Overview

High-level ODE solver driver with adaptive step control.

Defined in:

gsl/maths/analysis/ode.cr

Constructors

• .new(system : GSL::ODE::System, initial_step : Float64, epsabs : Float64 = 0.0, epsrel : Float64 = 0.0, algorithm : Algorithm | Nil = nil, a_y : Float64 = 0.0, a_dydt : Float64 = 1.0, scale_abs : Array(Float64) | Nil = nil)

  Initializes driver with #system, #initial_step, tolerances (epsabs and epsrel), algorithm, and scaling.

Instance Method Summary

• #apply(t0 : Float64, t1 : Float64, y : Array(Float64) | Slice(Float64))

  Integrates ODE from t0 to t1 using adaptive step.

• #evolve(y_initial, t0 : Float64, t1 : Float64, dt : Float64, &)

  Evolves system from t0 to t1 in fixed steps of dt; yields state and time.

• #evolve(y_initial, t0 : Float64, t1 : Float64, &)

  Evolves system using natural (adaptive) steps; yields state and time.

• #evolve(y_initial, time_points, &)

  Evolves system over given time points; yields state and time at each point.

• #evolve(y_initial, t0, t1, step)

  Returns tuple of {states, times} evolved with fixed step size.

• #evolve(y_initial, t0, t1)

  Returns tuple of {states, times} evolved from t0 to t1 with adaptive steps.

• #evolve(y_initial, time_points)

  Returns array of states at each time point.

• #hmax(*args, **options)
• #hmax(*args, **options, &)
• #hmax=(value)

  Sets maximum step size.

• #hmin(*args, **options)
• #hmin(*args, **options, &)
• #hmin=(value)

  Sets minimum step size.

• #initial_step : Float64

  Initial step size used in integration.

• #initial_step=(initial_step : Float64)

  Initial step size used in integration.

• #lib_free

  Frees underlying GSL driver struct.

• #nmax(*args, **options)
• #nmax(*args, **options, &)
• #nmax=(value)

  Sets maximum number of steps.

• #reset(initial_step)

  Resets driver with new initial step size.

• #reset

  Resets driver state (sets step to default initial_step).

• #system : System

Constructor Detail

Instance Method Detail