minimizer_tests_oct_m Module Reference

This modules takes care of testing optimizers using standard test functions. More...

Detailed Description

This modules takes care of testing optimizers using standard test functions.

Functions/Subroutines
subroutine, public	test_optimizers (namespace)
	Unit tests for different optimizers. More...
subroutine	rosenbrock_gradient_2d (n, x, val, getgrad, grad)
	Gradient of the Rosenbrock function. More...
subroutine	sphere_gradient_2d (n, x, val, getgrad, grad)
	Gradient of the sphere function. More...
subroutine	rastrigin_gradient_2d (n, x, val, getgrad, grad)
	Gradient of the Rastrigin function. More...
subroutine	write_iter_info (iter, n, val, maxdr, maxgrad, x)
	Helper function required by the minimizer. More...
subroutine	set_log_file (name)
	Set the log‐file name before running each test. More...

Variables
character(len=:), allocatable	current_log
	Name of the current log file for write_iter_info. More...

Function/Subroutine Documentation

test_optimizers()

subroutine, public minimizer_tests_oct_m::test_optimizers

(

type(namespace_t), intent(in)

namespace

)

Unit tests for different optimizers.

At the moment

Definition at line 148 of file minimizer_tests.F90.

rosenbrock_gradient_2d()

subroutine minimizer_tests_oct_m::rosenbrock_gradient_2d ( integer, intent(in)  n, real(real64), dimension(n), intent(in)  x, real(real64), intent(inout)  val, integer, intent(in)  getgrad, real(real64), dimension(n), intent(inout)  grad  )

private

Gradient of the Rosenbrock function.

The function is given by \( f(x, y) = (a - x)^2 + b(y - x^2)^2 \). It has a global minimum at \((x,y)=(a,a^2)\).

See https:

Definition at line 231 of file minimizer_tests.F90.

sphere_gradient_2d()

subroutine minimizer_tests_oct_m::sphere_gradient_2d ( integer, intent(in)  n, real(real64), dimension(n), intent(in)  x, real(real64), intent(inout)  val, integer, intent(in)  getgrad, real(real64), dimension(n), intent(inout)  grad  )

private

Gradient of the sphere function.

Definition at line 255 of file minimizer_tests.F90.

rastrigin_gradient_2d()

subroutine minimizer_tests_oct_m::rastrigin_gradient_2d ( integer, intent(in)  n, real(real64), dimension(n), intent(in)  x, real(real64), intent(inout)  val, integer, intent(in)  getgrad, real(real64), dimension(n), intent(inout)  grad  )

private

Gradient of the Rastrigin function.

The function is given by \( f(\mathbf{x}) = A + \sum_{i=1}^{n}\Bigl(x_i^2 - A\cos(2\pi x_i)\Bigr)\).

The gradient is \( \nabla f(\mathbf{x}) = 2\mathbf{x} + 2\pi A \sin\bigl(2\pi\mathbf{x}\bigr) \).

Definition at line 280 of file minimizer_tests.F90.

write_iter_info()

subroutine minimizer_tests_oct_m::write_iter_info ( integer, intent(in)  iter, integer, intent(in)  n, real(real64), intent(in)  val, real(real64), intent(in)  maxdr, real(real64), intent(in)  maxgrad, real(real64), dimension(n), intent(in)  x  )

private

Helper function required by the minimizer.

Outputs the details of the optimization steps into a file called optimization.log

Definition at line 305 of file minimizer_tests.F90.

set_log_file()

subroutine minimizer_tests_oct_m::set_log_file ( character(len=*), intent(in)  name )

private

Set the log‐file name before running each test.

Definition at line 328 of file minimizer_tests.F90.

Variable Documentation

current_log

character(len=:), allocatable minimizer_tests_oct_m::current_log

private

Name of the current log file for write_iter_info.

Definition at line 140 of file minimizer_tests.F90.