table of contents
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/zspt01.f(3) | Library Functions Manual | /home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/zspt01.f(3) |
NAME¶
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/zspt01.f
SYNOPSIS¶
Functions/Subroutines¶
subroutine ZSPT01 (uplo, n, a, afac, ipiv, c, ldc, rwork,
resid)
ZSPT01
Function/Subroutine Documentation¶
subroutine ZSPT01 (character uplo, integer n, complex*16, dimension( * ) a, complex*16, dimension( * ) afac, integer, dimension( * ) ipiv, complex*16, dimension( ldc, * ) c, integer ldc, double precision, dimension( * ) rwork, double precision resid)¶
ZSPT01
Purpose:
!> !> ZSPT01 reconstructs a symmetric indefinite packed matrix A from its !> diagonal pivoting factorization A = U*D*U' or A = L*D*L' and computes !> the residual !> norm( C - A ) / ( N * norm(A) * EPS ), !> where C is the reconstructed matrix and EPS is the machine epsilon. !>
Parameters
UPLO
!> UPLO is CHARACTER*1 !> Specifies whether the upper or lower triangular part of the !> Hermitian matrix A is stored: !> = 'U': Upper triangular !> = 'L': Lower triangular !>
N
!> N is INTEGER !> The order of the matrix A. N >= 0. !>
A
!> A is COMPLEX*16 array, dimension (N*(N+1)/2) !> The original symmetric matrix A, stored as a packed !> triangular matrix. !>
AFAC
!> AFAC is COMPLEX*16 array, dimension (N*(N+1)/2) !> The factored form of the matrix A, stored as a packed !> triangular matrix. AFAC contains the block diagonal matrix D !> and the multipliers used to obtain the factor L or U from the !> L*D*L' or U*D*U' factorization as computed by ZSPTRF. !>
IPIV
!> IPIV is INTEGER array, dimension (N) !> The pivot indices from ZSPTRF. !>
C
!> C is COMPLEX*16 array, dimension (LDC,N) !>
LDC
!> LDC is INTEGER !> The leading dimension of the array C. LDC >= max(1,N). !>
RWORK
!> RWORK is DOUBLE PRECISION array, dimension (N) !>
RESID
!> RESID is DOUBLE PRECISION !> If UPLO = 'L', norm(L*D*L' - A) / ( N * norm(A) * EPS ) !> If UPLO = 'U', norm(U*D*U' - A) / ( N * norm(A) * EPS ) !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 111 of file zspt01.f.
Author¶
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.12.0 | LAPACK |