cdrvrfp3
Part of cdrvrfp.f(3).
Usage
Functions/Subroutines
CDRVRFP
Function/Subroutine Documentation
subroutine cdrvrfp (integer nout, integer nn, integer, dimension( nn ) nval, integer nns, integer, dimension( nns ) nsval, integer nnt, integer, dimension( nnt ) ntval, real thresh, complex, dimension( * ) a, complex, dimension( * ) asav, complex, dimension( * ) afac, complex, dimension( * ) ainv, complex, dimension( * ) b, complex, dimension( * ) bsav, complex, dimension( * ) xact, complex, dimension( * ) x, complex, dimension( * ) arf, complex, dimension( * ) arfinv, complex, dimension( * ) c_work_clatms, complex, dimension( * ) c_work_cpot02, complex, dimension( * ) c_work_cpot03, real, dimension( * ) s_work_clatms, real, dimension( * ) s_work_clanhe, real, dimension( * ) s_work_cpot01, real, dimension( * ) s_work_cpot02, real, dimension( * ) s_work_cpot03)
CDRVRFP
Purpose:
!> !> CDRVRFP tests the LAPACK RFP routines: !> CPFTRF, CPFTRS, and CPFTRI. !> !> This testing routine follow the same tests as CDRVPO (test for the full !> format Symmetric Positive Definite solver). !> !> The tests are performed in Full Format, conversion back and forth from !> full format to RFP format are performed using the routines CTRTTF and !> CTFTTR. !> !> First, a specific matrix A of size N is created. There is nine types of !> different matrixes possible. !> 1. Diagonal 6. Random, CNDNUM = sqrt(0.1/EPS) !> 2. Random, CNDNUM = 2 7. Random, CNDNUM = 0.1/EPS !> *3. First row and column zero 8. Scaled near underflow !> *4. Last row and column zero 9. Scaled near overflow !> *5. Middle row and column zero !> (* - tests error exits from CPFTRF, no test ratios are computed) !> A solution XACT of size N-by-NRHS is created and the associated right !> hand side B as well. Then CPFTRF is called to compute L (or U), the !> Cholesky factor of A. Then L (or U) is used to solve the linear system !> of equations AX = B. This gives X. Then L (or U) is used to compute the !> inverse of A, AINV. The following four tests are then performed: !> (1) norm( L*L' - A ) / ( N * norm(A) * EPS ) or !> norm( U'*U - A ) / ( N * norm(A) * EPS ), !> (2) norm(B - A*X) / ( norm(A) * norm(X) * EPS ), !> (3) norm( I - A*AINV ) / ( N * norm(A) * norm(AINV) * EPS ), !> (4) ( norm(X-XACT) * RCOND ) / ( norm(XACT) * EPS ), !> where EPS is the machine precision, RCOND the condition number of A, and !> norm( . ) the 1-norm for (1,2,3) and the inf-norm for (4). !> Errors occur when INFO parameter is not as expected. Failures occur when !> a test ratios is greater than THRES. !>
Parameters
NOUT
!> NOUT is INTEGER !> The unit number for output. !>
NN
!> NN is INTEGER !> The number of values of N contained in the vector NVAL. !>
NVAL
!> NVAL is INTEGER array, dimension (NN) !> The values of the matrix dimension N. !>
NNS
!> NNS is INTEGER !> The number of values of NRHS contained in the vector NSVAL. !>
NSVAL
!> NSVAL is INTEGER array, dimension (NNS) !> The values of the number of right-hand sides NRHS. !>
NNT
!> NNT is INTEGER !> The number of values of MATRIX TYPE contained in the vector NTVAL. !>
NTVAL
!> NTVAL is INTEGER array, dimension (NNT) !> The values of matrix type (between 0 and 9 for PO/PP/PF matrices). !>
THRESH
!> THRESH is REAL !> The threshold value for the test ratios. A result is !> included in the output file if RESULT >= THRESH. To have !> every test ratio printed, use THRESH = 0. !>
A
!> A is COMPLEX array, dimension (NMAX*NMAX) !>
ASAV
!> ASAV is COMPLEX array, dimension (NMAX*NMAX) !>
AFAC
!> AFAC is COMPLEX array, dimension (NMAX*NMAX) !>
AINV
!> AINV is COMPLEX array, dimension (NMAX*NMAX) !>
B
!> B is COMPLEX array, dimension (NMAX*MAXRHS) !>
BSAV
!> BSAV is COMPLEX array, dimension (NMAX*MAXRHS) !>
XACT
!> XACT is COMPLEX array, dimension (NMAX*MAXRHS) !>
X
!> X is COMPLEX array, dimension (NMAX*MAXRHS) !>
ARF
!> ARF is COMPLEX array, dimension ((NMAX*(NMAX+1))/2) !>
ARFINV
!> ARFINV is COMPLEX array, dimension ((NMAX*(NMAX+1))/2) !>
C_WORK_CLATMS
!> C_WORK_CLATMS is COMPLEX array, dimension ( 3*NMAX ) !>
C_WORK_CPOT02
!> C_WORK_CPOT02 is COMPLEX array, dimension ( NMAX*MAXRHS ) !>
C_WORK_CPOT03
!> C_WORK_CPOT03 is COMPLEX array, dimension ( NMAX*NMAX ) !>
S_WORK_CLATMS
!> S_WORK_CLATMS is REAL array, dimension ( NMAX ) !>
S_WORK_CLANHE
!> S_WORK_CLANHE is REAL array, dimension ( NMAX ) !>
S_WORK_CPOT01
!> S_WORK_CPOT01 is REAL array, dimension ( NMAX ) !>
S_WORK_CPOT02
!> S_WORK_CPOT02 is REAL array, dimension ( NMAX ) !>
S_WORK_CPOT03
!> S_WORK_CPOT03 is REAL array, dimension ( NMAX ) !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 238 of file cdrvrfp.f.