table of contents
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/cget01.f(3) | Library Functions Manual | /home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/cget01.f(3) |
NAME¶
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/cget01.f
SYNOPSIS¶
Functions/Subroutines¶
subroutine CGET01 (m, n, a, lda, afac, ldafac, ipiv, rwork,
resid)
CGET01
Function/Subroutine Documentation¶
subroutine CGET01 (integer m, integer n, complex, dimension( lda, * ) a, integer lda, complex, dimension( ldafac, * ) afac, integer ldafac, integer, dimension( * ) ipiv, real, dimension( * ) rwork, real resid)¶
CGET01
Purpose:
!> !> CGET01 reconstructs a matrix A from its L*U factorization and !> computes the residual !> norm(L*U - A) / ( N * norm(A) * EPS ), !> where EPS is the machine epsilon. !>
Parameters
M
!> M is INTEGER !> The number of rows of the matrix A. M >= 0. !>
N
!> N is INTEGER !> The number of columns of the matrix A. N >= 0. !>
A
!> A is COMPLEX array, dimension (LDA,N) !> The original M x N matrix A. !>
LDA
!> LDA is INTEGER !> The leading dimension of the array A. LDA >= max(1,M). !>
AFAC
!> AFAC is COMPLEX array, dimension (LDAFAC,N) !> The factored form of the matrix A. AFAC contains the factors !> L and U from the L*U factorization as computed by CGETRF. !> Overwritten with the reconstructed matrix, and then with the !> difference L*U - A. !>
LDAFAC
!> LDAFAC is INTEGER !> The leading dimension of the array AFAC. LDAFAC >= max(1,M). !>
IPIV
!> IPIV is INTEGER array, dimension (N) !> The pivot indices from CGETRF. !>
RWORK
!> RWORK is REAL array, dimension (M) !>
RESID
!> RESID is REAL !> norm(L*U - A) / ( N * norm(A) * EPS ) !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 106 of file cget01.f.
Author¶
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Version 3.12.0 | LAPACK |