chetrs2 - solve a system of linear equations A*X = B with a complex Hermitian matrix A using the factorization A = U*D*U**H or A = L*D*L**H computed by CHETRF and converted by CSYCONV
SUBROUTINE CHETRS2(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) CHARACTER*1 UPLO INTEGER INFO, LDA, LDB, N, NRHS INTEGER IPIV(*) COMPLEX A(LDA,*), B(LDB,*), WORK(*) SUBROUTINE CHETRS2_64(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) CHARACTER*1 UPLO INTEGER*8 INFO, LDA, LDB, N, NRHS INTEGER*8 IPIV(*) COMPLEX A(LDA,*), B(LDB,*), WORK(*) F95 INTERFACE SUBROUTINE HETRS2(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) INTEGER :: N, NRHS, LDA, LDB, INFO CHARACTER(LEN=1) :: UPLO INTEGER, DIMENSION(:) :: IPIV COMPLEX, DIMENSION(:,:) :: A, B COMPLEX, DIMENSION(:) :: WORK SUBROUTINE HETRS2_64(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) INTEGER(8) :: N, NRHS, LDA, LDB, INFO CHARACTER(LEN=1) :: UPLO INTEGER(8), DIMENSION(:) :: IPIV COMPLEX, DIMENSION(:,:) :: A, B COMPLEX, DIMENSION(:) :: WORK C INTERFACE #include <sunperf.h> void chetrs2 (char uplo, int n, int nrhs, floatcomplex *a, int lda, int *ipiv, floatcomplex *b, int ldb, int *info); void chetrs2_64 (char uplo, long n, long nrhs, floatcomplex *a, long lda, long *ipiv, floatcomplex *b, long ldb, long *info);
Oracle Solaris Studio Performance Library chetrs2(3P) NAME chetrs2 - solve a system of linear equations A*X = B with a complex Hermitian matrix A using the factorization A = U*D*U**H or A = L*D*L**H computed by CHETRF and converted by CSYCONV SYNOPSIS SUBROUTINE CHETRS2(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) CHARACTER*1 UPLO INTEGER INFO, LDA, LDB, N, NRHS INTEGER IPIV(*) COMPLEX A(LDA,*), B(LDB,*), WORK(*) SUBROUTINE CHETRS2_64(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) CHARACTER*1 UPLO INTEGER*8 INFO, LDA, LDB, N, NRHS INTEGER*8 IPIV(*) COMPLEX A(LDA,*), B(LDB,*), WORK(*) F95 INTERFACE SUBROUTINE HETRS2(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) INTEGER :: N, NRHS, LDA, LDB, INFO CHARACTER(LEN=1) :: UPLO INTEGER, DIMENSION(:) :: IPIV COMPLEX, DIMENSION(:,:) :: A, B COMPLEX, DIMENSION(:) :: WORK SUBROUTINE HETRS2_64(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) INTEGER(8) :: N, NRHS, LDA, LDB, INFO CHARACTER(LEN=1) :: UPLO INTEGER(8), DIMENSION(:) :: IPIV COMPLEX, DIMENSION(:,:) :: A, B COMPLEX, DIMENSION(:) :: WORK C INTERFACE #include <sunperf.h> void chetrs2 (char uplo, int n, int nrhs, floatcomplex *a, int lda, int *ipiv, floatcomplex *b, int ldb, int *info); void chetrs2_64 (char uplo, long n, long nrhs, floatcomplex *a, long lda, long *ipiv, floatcomplex *b, long ldb, long *info); PURPOSE chetrs2 solves a system of linear equations A*X = B with a complex Her- mitian matrix A using the factorization A = U*D*U**H or A = L*D*L**H computed by CHETRF and converted by CSYCONV. ARGUMENTS UPLO (input) 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*D*U**H; = 'L': Lower triangular, form is A = L*D*L**H. N (input) N is INTEGER The order of the matrix A. N >= 0. NRHS (input) NRHS is INTEGER The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0. A (input) A is COMPLEX array, dimension (LDA,N) The block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by CHETRF. LDA (input) LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N). IPIV (input) IPIV is INTEGER array, dimension (N) Details of the interchanges and the block structure of D as determined by CHETRF. B (input/output) B is COMPLEX array, dimension (LDB,NRHS) On entry, the right hand side matrix B. On exit, the solution matrix X. LDB (input) LDB is INTEGER The leading dimension of the array B. LDB >= max(1,N). WORK (output) WORK is COMPLEX array, dimension (N) INFO (output) INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value 7 Nov 2015 chetrs2(3P)