cget03.f - Man Page
TESTING/LIN/cget03.f
Synopsis
Functions/Subroutines
subroutine cget03 (n, a, lda, ainv, ldainv, work, ldwork, rwork, rcond, resid)
CGET03
Function/Subroutine Documentation
subroutine cget03 (integer n, complex, dimension( lda, * ) a, integer lda, complex, dimension( ldainv, * ) ainv, integer ldainv, complex, dimension( ldwork, * ) work, integer ldwork, real, dimension( * ) rwork, real rcond, real resid)
CGET03
Purpose:
CGET03 computes the residual for a general matrix times its inverse: norm( I - AINV*A ) / ( N * norm(A) * norm(AINV) * EPS ), where EPS is the machine epsilon.
- Parameters
N
N is INTEGER The number of rows and columns of the matrix A. N >= 0.
A
A is COMPLEX array, dimension (LDA,N) The original N x N matrix A.
LDA
LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
AINV
AINV is COMPLEX array, dimension (LDAINV,N) The inverse of the matrix A.
LDAINV
LDAINV is INTEGER The leading dimension of the array AINV. LDAINV >= max(1,N).
WORK
WORK is COMPLEX array, dimension (LDWORK,N)
LDWORK
LDWORK is INTEGER The leading dimension of the array WORK. LDWORK >= max(1,N).
RWORK
RWORK is REAL array, dimension (N)
RCOND
RCOND is REAL The reciprocal of the condition number of A, computed as ( 1/norm(A) ) / norm(AINV).
RESID
RESID is REAL norm(I - AINV*A) / ( N * norm(A) * norm(AINV) * EPS )
- Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 108 of file cget03.f.
Author
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Referenced By
The man page cget03(3) is an alias of cget03.f(3).
Tue Nov 28 2023 12:08:42 Version 3.12.0 LAPACK