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Type: Posts; User: kll94530136

1. ## Thread: how can I get the inverse matrix in the sparse format

by kll94530136
Replies
3
Views
5,953

### May I ask for how the...

May I ask for how the IMSL_RETURN_SPARSE_LU_FACTOR and IMSL_SUPPLY_SPARSE_LU_FACTOR and IMSL_SOLVE_ONLY work?

Is the IMSL_RETURN_SPARSE_LU_FACTOR solve for LU decompostiton of A matrix,and then...
2. ## Thread: how can I get the inverse matrix in the sparse format

by kll94530136
Replies
3
Views
5,953

### thanks a lot I have tried the method you...

thanks a lot

I have tried the method you mention, IMSL_SUPPLY_SPARSE_LU_FACTOR and IMSL_SOLVE_ONLY

and I also used the
imsl_d_lin_sol_gen for IMSL_INVERSE , &p_inva to solve the linear...
3. ## Thread: how can I get the inverse matrix in the sparse format

by kll94530136
Replies
3
Views
5,953

### how can I get the inverse matrix in the sparse format

I want to solve the huge matrix of linear equations ,so I have to use the sparse matrix format to obtain my answers.

Hence,I use the imsl_f_lin_sol_gen_coordinate to solve the A*x=b
In order to...

by kll94530136
Replies
2
Views
4,701

### My matrix is very huge,just like A*x=B*b+C*c...

My matrix is very huge,just like

A*x=B*b+C*c
[2110*2110][2110*1]=[2110*1000][1000*1]+[2110*2110][2110*1]

and the matrix form is not banded
so it can be solved for only sparse in...

by kll94530136
Replies
2
Views
4,701

### ask for C Numerical Libraries about matrix of multiply and subtraction

may i ask for how to solve linear equation by using sparse matrix in IMSL C Numerical Libraries

Mathematical formulas just like :
A*x=B*b+C*c , solve...
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