TESTING/LIN/cdrvrfp.f(3) | Library Functions Manual | TESTING/LIN/cdrvrfp.f(3) |
NAME
TESTING/LIN/cdrvrfp.f
SYNOPSIS
Functions/Subroutines
subroutine cdrvrfp (nout, nn, nval, nns, nsval, nnt, ntval,
thresh, a, asav, afac, ainv, b, bsav, xact, x, arf, arfinv, c_work_clatms,
c_work_cpot02, c_work_cpot03, s_work_clatms, s_work_clanhe, s_work_cpot01,
s_work_cpot02, s_work_cpot03)
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.
Author
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