.TH "TESTING/LIN/ddrvrfp.f" 3 "Version 3.12.0" "LAPACK" \" -*- nroff -*-
.ad l
.nh
.SH NAME
TESTING/LIN/ddrvrfp.f
.SH SYNOPSIS
.br
.PP
.SS "Functions/Subroutines"

.in +1c
.ti -1c
.RI "subroutine \fBddrvrfp\fP (nout, nn, nval, nns, nsval, nnt, ntval, thresh, a, asav, afac, ainv, b, bsav, xact, x, arf, arfinv, d_work_dlatms, d_work_dpot01, d_temp_dpot02, d_temp_dpot03, d_work_dlansy, d_work_dpot02, d_work_dpot03)"
.br
.RI "\fBDDRVRFP\fP "
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "subroutine ddrvrfp (integer nout, integer nn, integer, dimension( nn ) nval, integer nns, integer, dimension( nns ) nsval, integer nnt, integer, dimension( nnt ) ntval, double precision thresh, double precision, dimension( * ) a, double precision, dimension( * ) asav, double precision, dimension( * ) afac, double precision, dimension( * ) ainv, double precision, dimension( * ) b, double precision, dimension( * ) bsav, double precision, dimension( * ) xact, double precision, dimension( * ) x, double precision, dimension( * ) arf, double precision, dimension( * ) arfinv, double precision, dimension( * ) d_work_dlatms, double precision, dimension( * ) d_work_dpot01, double precision, dimension( * ) d_temp_dpot02, double precision, dimension( * ) d_temp_dpot03, double precision, dimension( * ) d_work_dlansy, double precision, dimension( * ) d_work_dpot02, double precision, dimension( * ) d_work_dpot03)"

.PP
\fBDDRVRFP\fP 
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
!>
!> DDRVRFP tests the LAPACK RFP routines:
!>     DPFTRF, DPFTRS, and DPFTRI\&.
!>
!> This testing routine follow the same tests as DDRVPO (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 DTRTTF and
!> DTFTTR\&.
!>
!> 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 DPFTRF, 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 DPFTRF 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\&.
!> 
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fINOUT\fP 
.PP
.nf
!>          NOUT is INTEGER
!>                The unit number for output\&.
!> 
.fi
.PP
.br
\fINN\fP 
.PP
.nf
!>          NN is INTEGER
!>                The number of values of N contained in the vector NVAL\&.
!> 
.fi
.PP
.br
\fINVAL\fP 
.PP
.nf
!>          NVAL is INTEGER array, dimension (NN)
!>                The values of the matrix dimension N\&.
!> 
.fi
.PP
.br
\fINNS\fP 
.PP
.nf
!>          NNS is INTEGER
!>                The number of values of NRHS contained in the vector NSVAL\&.
!> 
.fi
.PP
.br
\fINSVAL\fP 
.PP
.nf
!>          NSVAL is INTEGER array, dimension (NNS)
!>                The values of the number of right-hand sides NRHS\&.
!> 
.fi
.PP
.br
\fINNT\fP 
.PP
.nf
!>          NNT is INTEGER
!>                The number of values of MATRIX TYPE contained in the vector NTVAL\&.
!> 
.fi
.PP
.br
\fINTVAL\fP 
.PP
.nf
!>          NTVAL is INTEGER array, dimension (NNT)
!>                The values of matrix type (between 0 and 9 for PO/PP/PF matrices)\&.
!> 
.fi
.PP
.br
\fITHRESH\fP 
.PP
.nf
!>          THRESH is DOUBLE PRECISION
!>                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\&.
!> 
.fi
.PP
.br
\fIA\fP 
.PP
.nf
!>          A is DOUBLE PRECISION array, dimension (NMAX*NMAX)
!> 
.fi
.PP
.br
\fIASAV\fP 
.PP
.nf
!>          ASAV is DOUBLE PRECISION array, dimension (NMAX*NMAX)
!> 
.fi
.PP
.br
\fIAFAC\fP 
.PP
.nf
!>          AFAC is DOUBLE PRECISION array, dimension (NMAX*NMAX)
!> 
.fi
.PP
.br
\fIAINV\fP 
.PP
.nf
!>          AINV is DOUBLE PRECISION array, dimension (NMAX*NMAX)
!> 
.fi
.PP
.br
\fIB\fP 
.PP
.nf
!>          B is DOUBLE PRECISION array, dimension (NMAX*MAXRHS)
!> 
.fi
.PP
.br
\fIBSAV\fP 
.PP
.nf
!>          BSAV is DOUBLE PRECISION array, dimension (NMAX*MAXRHS)
!> 
.fi
.PP
.br
\fIXACT\fP 
.PP
.nf
!>          XACT is DOUBLE PRECISION array, dimension (NMAX*MAXRHS)
!> 
.fi
.PP
.br
\fIX\fP 
.PP
.nf
!>          X is DOUBLE PRECISION array, dimension (NMAX*MAXRHS)
!> 
.fi
.PP
.br
\fIARF\fP 
.PP
.nf
!>          ARF is DOUBLE PRECISION array, dimension ((NMAX*(NMAX+1))/2)
!> 
.fi
.PP
.br
\fIARFINV\fP 
.PP
.nf
!>          ARFINV is DOUBLE PRECISION array, dimension ((NMAX*(NMAX+1))/2)
!> 
.fi
.PP
.br
\fID_WORK_DLATMS\fP 
.PP
.nf
!>          D_WORK_DLATMS is DOUBLE PRECISION array, dimension ( 3*NMAX )
!> 
.fi
.PP
.br
\fID_WORK_DPOT01\fP 
.PP
.nf
!>          D_WORK_DPOT01 is DOUBLE PRECISION array, dimension ( NMAX )
!> 
.fi
.PP
.br
\fID_TEMP_DPOT02\fP 
.PP
.nf
!>          D_TEMP_DPOT02 is DOUBLE PRECISION array, dimension ( NMAX*MAXRHS )
!> 
.fi
.PP
.br
\fID_TEMP_DPOT03\fP 
.PP
.nf
!>          D_TEMP_DPOT03 is DOUBLE PRECISION array, dimension ( NMAX*NMAX )
!> 
.fi
.PP
.br
\fID_WORK_DLANSY\fP 
.PP
.nf
!>          D_WORK_DLANSY is DOUBLE PRECISION array, dimension ( NMAX )
!> 
.fi
.PP
.br
\fID_WORK_DPOT02\fP 
.PP
.nf
!>          D_WORK_DPOT02 is DOUBLE PRECISION array, dimension ( NMAX )
!> 
.fi
.PP
.br
\fID_WORK_DPOT03\fP 
.PP
.nf
!>          D_WORK_DPOT03 is DOUBLE PRECISION array, dimension ( NMAX )
!> 
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 

.PP
Univ\&. of California Berkeley 

.PP
Univ\&. of Colorado Denver 

.PP
NAG Ltd\&. 
.RE
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.PP
Definition at line \fB232\fP of file \fBddrvrfp\&.f\fP\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for LAPACK from the source code\&.