LAPACK  3.4.0
LAPACK: Linear Algebra PACKage
Functions/Subroutines
csptrs.f File Reference

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Functions/Subroutines

subroutine CSPTRS (UPLO, N, NRHS, AP, IPIV, B, LDB, INFO)
 CSPTRS

Function/Subroutine Documentation

subroutine CSPTRS ( CHARACTER  UPLO,
INTEGER  N,
INTEGER  NRHS,
COMPLEX, dimension( * )  AP,
INTEGER, dimension( * )  IPIV,
COMPLEX, dimension( ldb, * )  B,
INTEGER  LDB,
INTEGER  INFO 
)

CSPTRS

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Purpose: 

 CSPTRS 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 CSPTRF.
Parameters:
[in]UPLO
          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**T;
          = 'L':  Lower triangular, form is A = L*D*L**T.
[in]N
          N is INTEGER
          The order of the matrix A.  N >= 0.
[in]NRHS
          NRHS is INTEGER
          The number of right hand sides, i.e., the number of columns
          of the matrix B.  NRHS >= 0.
[in]AP
          AP is COMPLEX 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 CSPTRF, stored as a
          packed triangular matrix.
[in]IPIV
          IPIV is INTEGER array, dimension (N)
          Details of the interchanges and the block structure of D
          as determined by CSPTRF.
[in,out]B
          B is COMPLEX array, dimension (LDB,NRHS)
          On entry, the right hand side matrix B.
          On exit, the solution matrix X.
[in]LDB
          LDB is INTEGER
          The leading dimension of the array B.  LDB >= max(1,N).
[out]INFO
          INFO is INTEGER
          = 0:  successful exit
          < 0: if INFO = -i, the i-th argument had an illegal value
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011

Definition at line 116 of file csptrs.f.

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