chfact

Arguments

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 Cholesky solver
• sparse — sparse matrix definition
• lufact — sparse lu factorization
• luget — extraction of sparse LU factors
• spchol — sparse cholesky factorization