Change default max of floating point to infinity from max

[griswaldbrooks]

Description

I recently found while using the library that the default maximum value for a floating point value (for example when using gt_eq) was set to std::numeric_limits<double>::max() which in C++ is less than std::numerical_limits<double>::infinity(). In my use case infinity was the default value of the parameter and this caused problems when trying to use something like rqt_reconfigure to look at the parameter and caused the rest of the parameters not to load.

It makes sense to me that the largest positive value would be infinity and not max double.

Testing

I updated and added a test in descriptor_test_gtest.cpp and ran

colcon test

but would like help adding additional tests that shows the default value of infinity.

I would also like to know if there's a way for my to run this test node so I can check the rqt_reconfigure output. When I run

ros2 run generate_parameter_library_example test_node 

I get

terminate called after throwing an instance of 'rclcpp::exceptions::ParameterUninitializedException'
  what():  parameter 'fixed_string_no_default' is not initialized
[ros2run]: Aborted

:shrug:

[pac48]

Thanks for fixing this.

I would also like to know if there's a way for my to run this test node so I can check the rqt_reconfigure output. When I run

To fix that, you just have to pass the parameter yaml into the node like this.

ros2 run generate_parameter_library_example test_node --ros-args --params-file src/generate_parameter_library/example/config/implementation.yaml

Note, that the path is relative to the workspace.

[pac48]

@griswaldbrooks Do you mind running pre-commit to fix the formatting?

[griswaldbrooks]

@pac48 have you ever seen something like

[WARN] [1705172458.735387611] [rqt_reconfigure]: Failed to retrieve parameters from node /admittance_controller: cannot convert float NaN to integer
[WARN] [1705172459.250283042] [rqt_reconfigure]: Failed to retrieve parameters from node: cannot convert float NaN to integer

this is very similar to what I encountered on my other project when attempting to use infinity

[griswaldbrooks]

also, for more context, this happens when running ros2 run rqt_reconfigure rqt_reconfigure with my changes. When running

griswald@gpl-container-dev:~/ws$ ros2 param get admittance_controller default_infinity                    
Double value is: inf 

There doesn't seem to be an issue, but this affects running rqt_reconfigure and custom tools that are getting the parameter ranges.