Comp Sci Calculate eigenvalue eigenvector in fortran

  • Thread starter Thread starter baha_tr
  • Start date Start date
AI Thread Summary
In 2023, multiple libraries are available for calculating eigenvalues and eigenvectors in Fortran, with LAPACK being a popular choice. Users can utilize the DSYEVX function for specific computations, such as finding states after a base state. Integrating Fortran 77 libraries into Fortran 2023 is generally straightforward, following the same calling conventions as in Fortran 77. One user encountered an error related to parameter entry in DSYEVX but successfully resolved the issue. Overall, leveraging existing libraries can facilitate eigenvalue computations in Fortran.
baha_tr
Messages
4
Reaction score
1
Homework Statement
Hello, I used to use Fortran 70 before and now I started using Fortran 2023, but I think the library usage is a little different. I wonder how we connect the libraries in 2023, I would be happy if you can help me.
Relevant Equations
intel fortran 2023
I wonder how we connect the libraries in 2023
 
Physics news on Phys.org
There is no 'the' libraries, there are many many libraries, what do you want? You can use e.g. LAPACK to compute eigenvalues.
 
Reply
  • Like
Likes pbuk and FactChecker
I just need to find the 4 states after the base state, I think I will use lapack or dsyevx.
 
Calling a Fortran 77 library from Fortran 2023 should be straightforward. Calling it as you would if you wrote your program in Fortran 77 should work.
 
"Intel MKL ERROR: Parameter 9 was incorrect on entry to DSYEVX". I am getting error code like this
 
ı have solved my problem :))
 

Similar threads

Engineering How do I find the transition matrix of this dynamic system?
Replies
18
Views
3K
Comp Sci IEEE-754 Precision Format
Replies
17
Views
3K
Which Comp Sci Degree Should I Choose for Better Earnings?
Replies
3
Views
2K
Model for a Qubit system using the Hamiltonion Operator
Replies
6
Views
2K
I Unravelling Structure of a Symmetric Matrix
Replies
5
Views
2K
Comp Sci Eigenvalues and eigenvectors of a real symmetric matrix in Fortran
Replies
5
Views
6K
Engineering Why was the thickness of the beam included in calculating this moment?
Replies
1
Views
2K
I Can one find a matrix that's 'unique' to a collection of eigenvectors?
Replies
33
Views
680
Prove 9 is eigenvalue of ##T^2\iff## 3 or -3 eigenvalue of ##T##.
Replies
5
Views
2K
Comp Sci Need help with Fortran homework -- Error: Invalid form of PROGRAM statement
Replies
4
Views
3K

Hot Threads

Recent Insights

Back
Top