TESTING/LIN/ddrvls.f(3) | Library Functions Manual | TESTING/LIN/ddrvls.f(3) |
NAME
TESTING/LIN/ddrvls.f
SYNOPSIS
Functions/Subroutines
subroutine ddrvls (dotype, nm, mval, nn, nval, nns, nsval,
nnb, nbval, nxval, thresh, tsterr, a, copya, b, copyb, c, s, copys, nout)
DDRVLS
Function/Subroutine Documentation
subroutine ddrvls (logical, dimension( * ) dotype, integer nm, integer, dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer nns, integer, dimension( * ) nsval, integer nnb, integer, dimension( * ) nbval, integer, dimension( * ) nxval, double precision thresh, logical tsterr, double precision, dimension( * ) a, double precision, dimension( * ) copya, double precision, dimension( * ) b, double precision, dimension( * ) copyb, double precision, dimension( * ) c, double precision, dimension( * ) s, double precision, dimension( * ) copys, integer nout)
DDRVLS
Purpose:
DDRVLS tests the least squares driver routines DGELS, DGELST, DGETSLS, DGELSS, DGELSY, and DGELSD.
Parameters
DOTYPE
DOTYPE is LOGICAL array, dimension (NTYPES) The matrix types to be used for testing. Matrices of type j (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) = .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used. The matrix of type j is generated as follows: j=1: A = U*D*V where U and V are random orthogonal matrices and D has random entries (> 0.1) taken from a uniform distribution (0,1). A is full rank. j=2: The same of 1, but A is scaled up. j=3: The same of 1, but A is scaled down. j=4: A = U*D*V where U and V are random orthogonal matrices and D has 3*min(M,N)/4 random entries (> 0.1) taken from a uniform distribution (0,1) and the remaining entries set to 0. A is rank-deficient. j=5: The same of 4, but A is scaled up. j=6: The same of 5, but A is scaled down.
NM
NM is INTEGER The number of values of M contained in the vector MVAL.
MVAL
MVAL is INTEGER array, dimension (NM) The values of the matrix row dimension M.
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 column 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.
NNB
NNB is INTEGER The number of values of NB and NX contained in the vectors NBVAL and NXVAL. The blocking parameters are used in pairs (NB,NX).
NBVAL
NBVAL is INTEGER array, dimension (NNB) The values of the blocksize NB.
NXVAL
NXVAL is INTEGER array, dimension (NNB) The values of the crossover point NX.
THRESH
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.
TSTERR
TSTERR is LOGICAL Flag that indicates whether error exits are to be tested.
A
A is DOUBLE PRECISION array, dimension (MMAX*NMAX) where MMAX is the maximum value of M in MVAL and NMAX is the maximum value of N in NVAL.
COPYA
COPYA is DOUBLE PRECISION array, dimension (MMAX*NMAX)
B
B is DOUBLE PRECISION array, dimension (MMAX*NSMAX) where MMAX is the maximum value of M in MVAL and NSMAX is the maximum value of NRHS in NSVAL.
COPYB
COPYB is DOUBLE PRECISION array, dimension (MMAX*NSMAX)
C
C is DOUBLE PRECISION array, dimension (MMAX*NSMAX)
S
S is DOUBLE PRECISION array, dimension (min(MMAX,NMAX))
COPYS
COPYS is DOUBLE PRECISION array, dimension (min(MMAX,NMAX))
NOUT
NOUT is INTEGER The unit number for output.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 189 of file ddrvls.f.
Author
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