subroutine chetrs_aa_2stage (UPLO, N, NRHS, A, LDA, TB, LTB, IPIV, IPIV2, B, LDB, INFO)
CHETRS_AA_2STAGE
CHETRS_AA_2STAGE
Purpose:
CHETRS_AA_2STAGE solves a system of linear equations A*X = B with a real hermitian matrix A using the factorization A = U*T*U**T or A = L*T*L**T computed by CHETRF_AA_2STAGE.
Parameters:
UPLO is CHARACTER*1 Specifies whether the details of the factorization are stored as an upper or lower triangular matrix. = 'U': Upper triangular, form is A = U*T*U**T; = 'L': Lower triangular, form is A = L*T*L**T.
N
N is INTEGER The order of the matrix A. N >= 0.
NRHS
NRHS is INTEGER The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0.
A
A is COMPLEX array, dimension (LDA,N) Details of factors computed by CHETRF_AA_2STAGE.
LDA
LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
TB
TB is COMPLEX array, dimension (LTB) Details of factors computed by CHETRF_AA_2STAGE.
LTB
The size of the array TB. LTB >= 4*N.
IPIV
IPIV is INTEGER array, dimension (N) Details of the interchanges as computed by CHETRF_AA_2STAGE.
IPIV2
IPIV2 is INTEGER array, dimension (N) Details of the interchanges as computed by CHETRF_AA_2STAGE.
B
B is COMPLEX array, dimension (LDB,NRHS) On entry, the right hand side matrix B. On exit, the solution matrix X.
LDB
LDB is INTEGER The leading dimension of the array B. LDB >= max(1,N).
INFO
INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Definition at line 142 of file chetrs_aa_2stage.f.
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