chfact

Scilab Function
Last update : April 1993

chfact - sparse Cholesky factorization

### Calling Sequence

  `spcho=chfact(A)`

### Parameters

- `A` : square symmetric positive sparse matrix
- `spcho` : list containing the Cholesky factors in coded form

### Description

`spcho=chfact(A)` computes the sparse Cholesky factors of sparse matrix `A` , assumed symmetric positive definite. This function is based on the Ng-Peyton programs (ORNL). See the Fortran programs for a complete description of the variables in `spcho` . This function is to be used with `chsolve` .

### See Also

`chsolve` , `sparse` , `lufact` , `luget` , `spchol` ,