zsytrs (3p)

Name

zsytrs - metric matrix A using the factorization A = U*D*U**T or A = L*D*L**T computed by ZSYTRF

Synopsis

SUBROUTINE ZSYTRS(UPLO, N, NRHS, A, LDA, IPIVOT, B, LDB, INFO)

CHARACTER*1 UPLO
DOUBLE COMPLEX A(LDA,*), B(LDB,*)
INTEGER N, NRHS, LDA, LDB, INFO
INTEGER IPIVOT(*)

SUBROUTINE ZSYTRS_64(UPLO, N, NRHS, A, LDA, IPIVOT, B, LDB, INFO)

CHARACTER*1 UPLO
DOUBLE COMPLEX A(LDA,*), B(LDB,*)
INTEGER*8 N, NRHS, LDA, LDB, INFO
INTEGER*8 IPIVOT(*)




F95 INTERFACE
SUBROUTINE SYTRS(UPLO, N, NRHS, A, LDA, IPIVOT, B, LDB, INFO)

CHARACTER(LEN=1) :: UPLO
COMPLEX(8), DIMENSION(:,:) :: A, B
INTEGER :: N, NRHS, LDA, LDB, INFO
INTEGER, DIMENSION(:) :: IPIVOT

SUBROUTINE SYTRS_64(UPLO, N, NRHS, A, LDA, IPIVOT, B, LDB, INFO)

CHARACTER(LEN=1) :: UPLO
COMPLEX(8), DIMENSION(:,:) :: A, B
INTEGER(8) :: N, NRHS, LDA, LDB, INFO
INTEGER(8), DIMENSION(:) :: IPIVOT




C INTERFACE
#include <sunperf.h>

void  zsytrs(char uplo, int n, int nrhs, doublecomplex *a, int lda, int
*ipivot, doublecomplex *b, int ldb, int *info);

void zsytrs_64(char uplo, long n, long  nrhs,  doublecomplex  *a,  long
lda, long *ipivot, doublecomplex *b, long ldb, long *info);

Description

Oracle Solaris Studio Performance Library                           zsytrs(3P)



NAME
       zsytrs - solve a system of linear equations A*X = B with a complex sym-
       metric matrix A using the factorization A = U*D*U**T or  A  =  L*D*L**T
       computed by ZSYTRF


SYNOPSIS
       SUBROUTINE ZSYTRS(UPLO, N, NRHS, A, LDA, IPIVOT, B, LDB, INFO)

       CHARACTER*1 UPLO
       DOUBLE COMPLEX A(LDA,*), B(LDB,*)
       INTEGER N, NRHS, LDA, LDB, INFO
       INTEGER IPIVOT(*)

       SUBROUTINE ZSYTRS_64(UPLO, N, NRHS, A, LDA, IPIVOT, B, LDB, INFO)

       CHARACTER*1 UPLO
       DOUBLE COMPLEX A(LDA,*), B(LDB,*)
       INTEGER*8 N, NRHS, LDA, LDB, INFO
       INTEGER*8 IPIVOT(*)




   F95 INTERFACE
       SUBROUTINE SYTRS(UPLO, N, NRHS, A, LDA, IPIVOT, B, LDB, INFO)

       CHARACTER(LEN=1) :: UPLO
       COMPLEX(8), DIMENSION(:,:) :: A, B
       INTEGER :: N, NRHS, LDA, LDB, INFO
       INTEGER, DIMENSION(:) :: IPIVOT

       SUBROUTINE SYTRS_64(UPLO, N, NRHS, A, LDA, IPIVOT, B, LDB, INFO)

       CHARACTER(LEN=1) :: UPLO
       COMPLEX(8), DIMENSION(:,:) :: A, B
       INTEGER(8) :: N, NRHS, LDA, LDB, INFO
       INTEGER(8), DIMENSION(:) :: IPIVOT




   C INTERFACE
       #include <sunperf.h>

       void  zsytrs(char uplo, int n, int nrhs, doublecomplex *a, int lda, int
                 *ipivot, doublecomplex *b, int ldb, int *info);

       void zsytrs_64(char uplo, long n, long  nrhs,  doublecomplex  *a,  long
                 lda, long *ipivot, doublecomplex *b, long ldb, long *info);



PURPOSE
       zsytrs  solves a system of linear equations A*X = B with a complex sym-
       metric matrix A using the factorization A = U*D*U**T or  A  =  L*D*L**T
       computed by ZSYTRF.


ARGUMENTS
       UPLO (input)
                 Specifies whether the details of the factorization are stored
                 as an upper or lower triangular matrix.  = 'U':  Upper trian-
                 gular, form is A = U*D*U**T;
                 = 'L':  Lower triangular, form is A = L*D*L**T.


       N (input) The order of the matrix A.  N >= 0.


       NRHS (input)
                 The  number  of right hand sides, i.e., the number of columns
                 of the matrix B.  NRHS >= 0.


       A (input) The block diagonal matrix  D  and  the  multipliers  used  to
                 obtain the factor U or L as computed by ZSYTRF.


       LDA (input)
                 The leading dimension of the array A.  LDA >= max(1,N).


       IPIVOT (input)
                 Details  of  the interchanges and the block structure of D as
                 determined by ZSYTRF.


       B (input/output)
                 On entry, the right hand side matrix B.  On exit,  the  solu-
                 tion matrix X.


       LDB (input)
                 The leading dimension of the array B.  LDB >= max(1,N).


       INFO (output)
                 = 0:  successful exit
                 < 0:  if INFO = -i, the i-th argument had an illegal value




                                  7 Nov 2015                        zsytrs(3P)