zsptrs (l)  Linux Manuals
zsptrs: solves a system of linear equations A*X = B with a complex symmetric matrix A stored in packed format using the factorization A = U*D*U**T or A = L*D*L**T computed by ZSPTRF
Command to display zsptrs
manual in Linux: $ man l zsptrs
NAME
ZSPTRS  solves a system of linear equations A*X = B with a complex symmetric matrix A stored in packed format using the factorization A = U*D*U**T or A = L*D*L**T computed by ZSPTRF
SYNOPSIS
 SUBROUTINE ZSPTRS(

UPLO, N, NRHS, AP, IPIV, B, LDB, INFO )

CHARACTER
UPLO

INTEGER
INFO, LDB, N, NRHS

INTEGER
IPIV( * )

COMPLEX*16
AP( * ), B( LDB, * )
PURPOSE
ZSPTRS solves a system of linear equations A*X = B with a complex
symmetric matrix A stored in packed format using the factorization
A = U*D*U**T or A = L*D*L**T computed by ZSPTRF.
ARGUMENTS
 UPLO (input) CHARACTER*1

Specifies whether the details of the factorization are stored
as an upper or lower triangular matrix.
= aqUaq: Upper triangular, form is A = U*D*U**T;
= aqLaq: Lower triangular, form is A = L*D*L**T.
 N (input) INTEGER

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

The number of right hand sides, i.e., the number of columns
of the matrix B. NRHS >= 0.
 AP (input) COMPLEX*16 array, dimension (N*(N+1)/2)

The block diagonal matrix D and the multipliers used to
obtain the factor U or L as computed by ZSPTRF, stored as a
packed triangular matrix.
 IPIV (input) INTEGER array, dimension (N)

Details of the interchanges and the block structure of D
as determined by ZSPTRF.
 B (input/output) COMPLEX*16 array, dimension (LDB,NRHS)

On entry, the right hand side matrix B.
On exit, the solution matrix X.
 LDB (input) INTEGER

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

= 0: successful exit
< 0: if INFO = i, the ith argument had an illegal value
Pages related to zsptrs
 zsptrs (3)
 zsptrf (l)  computes the factorization of a complex symmetric matrix A stored in packed format using the BunchKaufman diagonal pivoting method
 zsptri (l)  computes the inverse of a complex symmetric indefinite matrix A in packed storage using the factorization A = U*D*U**T or A = L*D*L**T computed by ZSPTRF
 zspcon (l)  estimates the reciprocal of the condition number (in the 1norm) of a complex symmetric packed matrix A using the factorization A = U*D*U**T or A = L*D*L**T computed by ZSPTRF
 zspmv (l)  performs the matrixvector operation y := alpha*A*x + beta*y,
 zspr (l)  performs the symmetric rank 1 operation A := alpha*x*conjg( xaq ) + A,
 zsprfs (l)  improves the computed solution to a system of linear equations when the coefficient matrix is symmetric indefinite and packed, and provides error bounds and backward error estimates for the solution
 zspsv (l)  computes the solution to a complex system of linear equations A * X = B,