zhetrs2 - mitian matrix A using the factorization A=U*D*U**H or A=L*D*L**H com- puted by ZHETRF and converted by ZSYCONV
SUBROUTINE ZHETRS2(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) CHARACTER*1 UPLO INTEGER INFO, LDA, LDB, N, NRHS INTEGER IPIV(*) DOUBLE COMPLEX A(LDA,*), B(LDB,*), WORK(*) SUBROUTINE ZHETRS2_64(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO) CHARACTER*1 UPLO INTEGER*8 INFO, LDA, LDB, N, NRHS INTEGER*8 IPIV(*) DOUBLE 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(8), DIMENSION(:,:) :: A, B COMPLEX(8), 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(8), DIMENSION(:,:) :: A, B COMPLEX(8), DIMENSION(:) :: WORK C INTERFACE #include <sunperf.h> void zhetrs2 (char uplo, int n, int nrhs, doublecomplex *a, int lda, int *ipiv, doublecomplex *b, int ldb, int *info); void zhetrs2_64 (char uplo, long n, long nrhs, doublecomplex *a, long lda, long *ipiv, doublecomplex *b, long ldb, long *info);
Oracle Solaris Studio Performance Library zhetrs2(3P)
NAME
zhetrs2 - solve 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 com-
puted by ZHETRF and converted by ZSYCONV
SYNOPSIS
SUBROUTINE ZHETRS2(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO)
CHARACTER*1 UPLO
INTEGER INFO, LDA, LDB, N, NRHS
INTEGER IPIV(*)
DOUBLE COMPLEX A(LDA,*), B(LDB,*), WORK(*)
SUBROUTINE ZHETRS2_64(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO)
CHARACTER*1 UPLO
INTEGER*8 INFO, LDA, LDB, N, NRHS
INTEGER*8 IPIV(*)
DOUBLE 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(8), DIMENSION(:,:) :: A, B
COMPLEX(8), 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(8), DIMENSION(:,:) :: A, B
COMPLEX(8), DIMENSION(:) :: WORK
C INTERFACE
#include <sunperf.h>
void zhetrs2 (char uplo, int n, int nrhs, doublecomplex *a, int lda,
int *ipiv, doublecomplex *b, int ldb, int *info);
void zhetrs2_64 (char uplo, long n, long nrhs, doublecomplex *a, long
lda, long *ipiv, doublecomplex *b, long ldb, long *info);
PURPOSE
zhetrs2 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 ZHETRF and converted by ZSYCONV.
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*16 array, dimension (LDA,N)
The block diagonal matrix D and the multipliers used to
obtain the factor U or L as computed by ZHETRF.
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 ZHETRF.
B (input/output)
B is COMPLEX*16 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 REAL 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 zhetrs2(3P)