Matlab question about equality check

[yaang]

Matlab question about equality check, decimals

Complete code is attached as an .m file

Code basically finds the inverse kinematics of a 2 part robot arm. There should be 4 mathematical solutions and 2 of these solution should physically solve this system. Problem is one of the correct solutions(3rd solution) find the Py value to be 2.49999999999 where it should be 2.50000000. How can i find out where this error is coming from and how can i fix it ?

My code checks if the Py value is 2.5 and since it isn't according to MATLAB (it should be exactly 2.5 i don't understand why MATLAB thinks otherwise) it returns false. Any way around this problem will be appreciated.

 

[LightHero]

You can use the Matlab function isequal() to compare floating-point numbers that might differ in precision. The syntax for isequal() is:isequal(A,B,tol)where A and B are the values you wish to compare, and tol is the tolerance (in this case, the maximum difference allowed between A and B).For example, if your Py value is 2.49999999999, and you want to check if it is equal to 2.5 (within a tolerance of 0.00001), you can use the following code:isequal(2.49999999999,2.5,0.00001)This will return true, indicating that the two values are equal within the given tolerance.