#include "blaswrap.h"
/*  -- translated by f2c (version 19990503).
   You must link the resulting object file with the libraries:
	-lf2c -lm   (in that order)
*/

#include "f2c.h"

/* Common Block Declarations */

struct {
    integer infot, nunit;
    logical ok, lerr;
} infoc_;

#define infoc_1 infoc_

struct {
    char srnamt[6];
} srnamc_;

#define srnamc_1 srnamc_

/* Table of constant values */

static integer c__1 = 1;
static integer c__2 = 2;
static integer c__0 = 0;
static integer c_n1 = -1;
static doublereal c_b50 = 0.;

/* Subroutine */ int ddrvpo_(logical *dotype, integer *nn, integer *nval, 
	integer *nrhs, doublereal *thresh, logical *tsterr, integer *nmax, 
	doublereal *a, doublereal *afac, doublereal *asav, doublereal *b, 
	doublereal *bsav, doublereal *x, doublereal *xact, doublereal *s, 
	doublereal *work, doublereal *rwork, integer *iwork, integer *nout)
{
    /* Initialized data */

    static integer iseedy[4] = { 1988,1989,1990,1991 };
    static char uplos[1*2] = "U" "L";
    static char facts[1*3] = "F" "N" "E";
    static char equeds[1*2] = "N" "Y";

    /* Format strings */
    static char fmt_9999[] = "(1x,a6,\002, UPLO='\002,a1,\002', N =\002,i5"
	    ",\002, type \002,i1,\002, test(\002,i1,\002)=\002,g12.5)";
    static char fmt_9997[] = "(1x,a6,\002, FACT='\002,a1,\002', UPLO='\002,a"
	    "1,\002', N=\002,i5,\002, EQUED='\002,a1,\002', type \002,i1,\002"
	    ", test(\002,i1,\002) =\002,g12.5)";
    static char fmt_9998[] = "(1x,a6,\002, FACT='\002,a1,\002', UPLO='\002,a"
	    "1,\002', N=\002,i5,\002, type \002,i1,\002, test(\002,i1,\002)"
	    "=\002,g12.5)";

    /* System generated locals */
    address a__1[2];
    integer i__1, i__2, i__3, i__4, i__5[2];
    char ch__1[2];

    /* Builtin functions   
       Subroutine */ int s_copy(char *, char *, ftnlen, ftnlen);
    integer s_wsfe(cilist *), do_fio(integer *, char *, ftnlen), e_wsfe(void);
    /* Subroutine */ int s_cat(char *, char **, integer *, integer *, ftnlen);

    /* Local variables */
    static char fact[1];
    static integer ioff, mode;
    static doublereal amax;
    static char path[3];
    static integer imat, info;
    static char dist[1], uplo[1], type__[1];
    static integer nrun, i__, k, n, ifact;
    extern /* Subroutine */ int dget04_(integer *, integer *, doublereal *, 
	    integer *, doublereal *, integer *, doublereal *, doublereal *);
    static integer nfail, iseed[4], nfact;
    extern doublereal dget06_(doublereal *, doublereal *);
    extern logical lsame_(char *, char *);
    static char equed[1];
    static integer nbmin;
    static doublereal rcond, roldc, scond;
    static integer nimat;
    extern /* Subroutine */ int dpot01_(char *, integer *, doublereal *, 
	    integer *, doublereal *, integer *, doublereal *, doublereal *), dpot02_(char *, integer *, integer *, doublereal *, 
	    integer *, doublereal *, integer *, doublereal *, integer *, 
	    doublereal *, doublereal *), dpot05_(char *, integer *, 
	    integer *, doublereal *, integer *, doublereal *, integer *, 
	    doublereal *, integer *, doublereal *, integer *, doublereal *, 
	    doublereal *, doublereal *);
    static doublereal anorm;
    static logical equil;
    static integer iuplo, izero, nerrs, k1;
    extern /* Subroutine */ int dposv_(char *, integer *, integer *, 
	    doublereal *, integer *, doublereal *, integer *, integer *);
    static logical zerot;
    static char xtype[1];
    extern /* Subroutine */ int dlatb4_(char *, integer *, integer *, integer 
	    *, char *, integer *, integer *, doublereal *, integer *, 
	    doublereal *, char *), aladhd_(integer *, 
	    char *);
    static integer nb, in, kl;
    extern /* Subroutine */ int alaerh_(char *, char *, integer *, integer *, 
	    char *, integer *, integer *, integer *, integer *, integer *, 
	    integer *, integer *, integer *, integer *);
    static logical prefac;
    static integer ku, nt;
    static doublereal rcondc;
    static logical nofact;
    static integer iequed;
    extern /* Subroutine */ int dlacpy_(char *, integer *, integer *, 
	    doublereal *, integer *, doublereal *, integer *), 
	    dlarhs_(char *, char *, char *, char *, integer *, integer *, 
	    integer *, integer *, integer *, doublereal *, integer *, 
	    doublereal *, integer *, doublereal *, integer *, integer *, 
	    integer *), dlaset_(char *, 
	    integer *, integer *, doublereal *, doublereal *, doublereal *, 
	    integer *), alasvm_(char *, integer *, integer *, integer 
	    *, integer *);
    static doublereal cndnum;
    extern /* Subroutine */ int dlatms_(integer *, integer *, char *, integer 
	    *, char *, doublereal *, integer *, doublereal *, doublereal *, 
	    integer *, integer *, char *, doublereal *, integer *, doublereal 
	    *, integer *);
    static doublereal ainvnm;
    extern doublereal dlansy_(char *, char *, integer *, doublereal *, 
	    integer *, doublereal *);
    extern /* Subroutine */ int dlaqsy_(char *, integer *, doublereal *, 
	    integer *, doublereal *, doublereal *, doublereal *, char *), dpoequ_(integer *, doublereal *, integer *, 
	    doublereal *, doublereal *, doublereal *, integer *), dpotrf_(
	    char *, integer *, doublereal *, integer *, integer *), 
	    dpotri_(char *, integer *, doublereal *, integer *, integer *), xlaenv_(integer *, integer *), derrvx_(char *, integer *);
    static doublereal result[6];
    extern /* Subroutine */ int dposvx_(char *, char *, integer *, integer *, 
	    doublereal *, integer *, doublereal *, integer *, char *, 
	    doublereal *, doublereal *, integer *, doublereal *, integer *, 
	    doublereal *, doublereal *, doublereal *, doublereal *, integer *,
	     integer *);
    static integer lda;

    /* Fortran I/O blocks */
    static cilist io___48 = { 0, 0, 0, fmt_9999, 0 };
    static cilist io___51 = { 0, 0, 0, fmt_9997, 0 };
    static cilist io___52 = { 0, 0, 0, fmt_9998, 0 };



/*  -- LAPACK test routine (version 3.0) --   
       Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,   
       Courant Institute, Argonne National Lab, and Rice University   
       June 30, 1999   


    Purpose   
    =======   

    DDRVPO tests the driver routines DPOSV and -SVX.   

    Arguments   
    =========   

    DOTYPE  (input) 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.   

    NN      (input) INTEGER   
            The number of values of N contained in the vector NVAL.   

    NVAL    (input) INTEGER array, dimension (NN)   
            The values of the matrix dimension N.   

    NRHS    (input) INTEGER   
            The number of right hand side vectors to be generated for   
            each linear system.   

    THRESH  (input) 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  (input) LOGICAL   
            Flag that indicates whether error exits are to be tested.   

    NMAX    (input) INTEGER   
            The maximum value permitted for N, used in dimensioning the   
            work arrays.   

    A       (workspace) DOUBLE PRECISION array, dimension (NMAX*NMAX)   

    AFAC    (workspace) DOUBLE PRECISION array, dimension (NMAX*NMAX)   

    ASAV    (workspace) DOUBLE PRECISION array, dimension (NMAX*NMAX)   

    B       (workspace) DOUBLE PRECISION array, dimension (NMAX*NRHS)   

    BSAV    (workspace) DOUBLE PRECISION array, dimension (NMAX*NRHS)   

    X       (workspace) DOUBLE PRECISION array, dimension (NMAX*NRHS)   

    XACT    (workspace) DOUBLE PRECISION array, dimension (NMAX*NRHS)   

    S       (workspace) DOUBLE PRECISION array, dimension (NMAX)   

    WORK    (workspace) DOUBLE PRECISION array, dimension   
                        (NMAX*max(3,NRHS))   

    RWORK   (workspace) DOUBLE PRECISION array, dimension (NMAX+2*NRHS)   

    IWORK   (workspace) INTEGER array, dimension (NMAX)   

    NOUT    (input) INTEGER   
            The unit number for output.   

    =====================================================================   

       Parameter adjustments */
    --iwork;
    --rwork;
    --work;
    --s;
    --xact;
    --x;
    --bsav;
    --b;
    --asav;
    --afac;
    --a;
    --nval;
    --dotype;

    /* Function Body   

       Initialize constants and the random number seed. */

    s_copy(path, "Double precision", (ftnlen)1, (ftnlen)16);
    s_copy(path + 1, "PO", (ftnlen)2, (ftnlen)2);
    nrun = 0;
    nfail = 0;
    nerrs = 0;
    for (i__ = 1; i__ <= 4; ++i__) {
	iseed[i__ - 1] = iseedy[i__ - 1];
/* L10: */
    }

/*     Test the error exits */

    if (*tsterr) {
	derrvx_(path, nout);
    }
    infoc_1.infot = 0;

/*     Set the block size and minimum block size for testing. */

    nb = 1;
    nbmin = 2;
    xlaenv_(&c__1, &nb);
    xlaenv_(&c__2, &nbmin);

/*     Do for each value of N in NVAL */

    i__1 = *nn;
    for (in = 1; in <= i__1; ++in) {
	n = nval[in];
	lda = max(n,1);
	*(unsigned char *)xtype = 'N';
	nimat = 9;
	if (n <= 0) {
	    nimat = 1;
	}

	i__2 = nimat;
	for (imat = 1; imat <= i__2; ++imat) {

/*           Do the tests only if DOTYPE( IMAT ) is true. */

	    if (! dotype[imat]) {
		goto L120;
	    }

/*           Skip types 3, 4, or 5 if the matrix size is too small. */

	    zerot = imat >= 3 && imat <= 5;
	    if (zerot && n < imat - 2) {
		goto L120;
	    }

/*           Do first for UPLO = 'U', then for UPLO = 'L' */

	    for (iuplo = 1; iuplo <= 2; ++iuplo) {
		*(unsigned char *)uplo = *(unsigned char *)&uplos[iuplo - 1];

/*              Set up parameters with DLATB4 and generate a test matrix   
                with DLATMS. */

		dlatb4_(path, &imat, &n, &n, type__, &kl, &ku, &anorm, &mode, 
			&cndnum, dist);

		s_copy(srnamc_1.srnamt, "DLATMS", (ftnlen)6, (ftnlen)6);
		dlatms_(&n, &n, dist, iseed, type__, &rwork[1], &mode, &
			cndnum, &anorm, &kl, &ku, uplo, &a[1], &lda, &work[1],
			 &info);

/*              Check error code from DLATMS. */

		if (info != 0) {
		    alaerh_(path, "DLATMS", &info, &c__0, uplo, &n, &n, &c_n1,
			     &c_n1, &c_n1, &imat, &nfail, &nerrs, nout);
		    goto L110;
		}

/*              For types 3-5, zero one row and column of the matrix to   
                test that INFO is returned correctly. */

		if (zerot) {
		    if (imat == 3) {
			izero = 1;
		    } else if (imat == 4) {
			izero = n;
		    } else {
			izero = n / 2 + 1;
		    }
		    ioff = (izero - 1) * lda;

/*                 Set row and column IZERO of A to 0. */

		    if (iuplo == 1) {
			i__3 = izero - 1;
			for (i__ = 1; i__ <= i__3; ++i__) {
			    a[ioff + i__] = 0.;
/* L20: */
			}
			ioff += izero;
			i__3 = n;
			for (i__ = izero; i__ <= i__3; ++i__) {
			    a[ioff] = 0.;
			    ioff += lda;
/* L30: */
			}
		    } else {
			ioff = izero;
			i__3 = izero - 1;
			for (i__ = 1; i__ <= i__3; ++i__) {
			    a[ioff] = 0.;
			    ioff += lda;
/* L40: */
			}
			ioff -= izero;
			i__3 = n;
			for (i__ = izero; i__ <= i__3; ++i__) {
			    a[ioff + i__] = 0.;
/* L50: */
			}
		    }
		} else {
		    izero = 0;
		}

/*              Save a copy of the matrix A in ASAV. */

		dlacpy_(uplo, &n, &n, &a[1], &lda, &asav[1], &lda);

		for (iequed = 1; iequed <= 2; ++iequed) {
		    *(unsigned char *)equed = *(unsigned char *)&equeds[
			    iequed - 1];
		    if (iequed == 1) {
			nfact = 3;
		    } else {
			nfact = 1;
		    }

		    i__3 = nfact;
		    for (ifact = 1; ifact <= i__3; ++ifact) {
			*(unsigned char *)fact = *(unsigned char *)&facts[
				ifact - 1];
			prefac = lsame_(fact, "F");
			nofact = lsame_(fact, "N");
			equil = lsame_(fact, "E");

			if (zerot) {
			    if (prefac) {
				goto L90;
			    }
			    rcondc = 0.;

			} else if (! lsame_(fact, "N")) 
				{

/*                       Compute the condition number for comparison with   
                         the value returned by DPOSVX (FACT = 'N' reuses   
                         the condition number from the previous iteration   
                         with FACT = 'F'). */

			    dlacpy_(uplo, &n, &n, &asav[1], &lda, &afac[1], &
				    lda);
			    if (equil || iequed > 1) {

/*                          Compute row and column scale factors to   
                            equilibrate the matrix A. */

				dpoequ_(&n, &afac[1], &lda, &s[1], &scond, &
					amax, &info);
				if (info == 0 && n > 0) {
				    if (iequed > 1) {
					scond = 0.;
				    }

/*                             Equilibrate the matrix. */

				    dlaqsy_(uplo, &n, &afac[1], &lda, &s[1], &
					    scond, &amax, equed);
				}
			    }

/*                       Save the condition number of the   
                         non-equilibrated system for use in DGET04. */

			    if (equil) {
				roldc = rcondc;
			    }

/*                       Compute the 1-norm of A. */

			    anorm = dlansy_("1", uplo, &n, &afac[1], &lda, &
				    rwork[1]);

/*                       Factor the matrix A. */

			    dpotrf_(uplo, &n, &afac[1], &lda, &info);

/*                       Form the inverse of A. */

			    dlacpy_(uplo, &n, &n, &afac[1], &lda, &a[1], &lda);
			    dpotri_(uplo, &n, &a[1], &lda, &info);

/*                       Compute the 1-norm condition number of A. */

			    ainvnm = dlansy_("1", uplo, &n, &a[1], &lda, &
				    rwork[1]);
			    if (anorm <= 0. || ainvnm <= 0.) {
				rcondc = 1.;
			    } else {
				rcondc = 1. / anorm / ainvnm;
			    }
			}

/*                    Restore the matrix A. */

			dlacpy_(uplo, &n, &n, &asav[1], &lda, &a[1], &lda);

/*                    Form an exact solution and set the right hand side. */

			s_copy(srnamc_1.srnamt, "DLARHS", (ftnlen)6, (ftnlen)
				6);
			dlarhs_(path, xtype, uplo, " ", &n, &n, &kl, &ku, 
				nrhs, &a[1], &lda, &xact[1], &lda, &b[1], &
				lda, iseed, &info);
			*(unsigned char *)xtype = 'C';
			dlacpy_("Full", &n, nrhs, &b[1], &lda, &bsav[1], &lda);

			if (nofact) {

/*                       --- Test DPOSV  ---   

                         Compute the L*L' or U'*U factorization of the   
                         matrix and solve the system. */

			    dlacpy_(uplo, &n, &n, &a[1], &lda, &afac[1], &lda);
			    dlacpy_("Full", &n, nrhs, &b[1], &lda, &x[1], &
				    lda);

			    s_copy(srnamc_1.srnamt, "DPOSV ", (ftnlen)6, (
				    ftnlen)6);
			    dposv_(uplo, &n, nrhs, &afac[1], &lda, &x[1], &
				    lda, &info);

/*                       Check error code from DPOSV . */

			    if (info != izero) {
				alaerh_(path, "DPOSV ", &info, &izero, uplo, &
					n, &n, &c_n1, &c_n1, nrhs, &imat, &
					nfail, &nerrs, nout);
				goto L70;
			    } else if (info != 0) {
				goto L70;
			    }

/*                       Reconstruct matrix from factors and compute   
                         residual. */

			    dpot01_(uplo, &n, &a[1], &lda, &afac[1], &lda, &
				    rwork[1], result);

/*                       Compute residual of the computed solution. */

			    dlacpy_("Full", &n, nrhs, &b[1], &lda, &work[1], &
				    lda);
			    dpot02_(uplo, &n, nrhs, &a[1], &lda, &x[1], &lda, 
				    &work[1], &lda, &rwork[1], &result[1]);

/*                       Check solution from generated exact solution. */

			    dget04_(&n, nrhs, &x[1], &lda, &xact[1], &lda, &
				    rcondc, &result[2]);
			    nt = 3;

/*                       Print information about the tests that did not   
                         pass the threshold. */

			    i__4 = nt;
			    for (k = 1; k <= i__4; ++k) {
				if (result[k - 1] >= *thresh) {
				    if (nfail == 0 && nerrs == 0) {
					aladhd_(nout, path);
				    }
				    io___48.ciunit = *nout;
				    s_wsfe(&io___48);
				    do_fio(&c__1, "DPOSV ", (ftnlen)6);
				    do_fio(&c__1, uplo, (ftnlen)1);
				    do_fio(&c__1, (char *)&n, (ftnlen)sizeof(
					    integer));
				    do_fio(&c__1, (char *)&imat, (ftnlen)
					    sizeof(integer));
				    do_fio(&c__1, (char *)&k, (ftnlen)sizeof(
					    integer));
				    do_fio(&c__1, (char *)&result[k - 1], (
					    ftnlen)sizeof(doublereal));
				    e_wsfe();
				    ++nfail;
				}
/* L60: */
			    }
			    nrun += nt;
L70:
			    ;
			}

/*                    --- Test DPOSVX --- */

			if (! prefac) {
			    dlaset_(uplo, &n, &n, &c_b50, &c_b50, &afac[1], &
				    lda);
			}
			dlaset_("Full", &n, nrhs, &c_b50, &c_b50, &x[1], &lda);
			if (iequed > 1 && n > 0) {

/*                       Equilibrate the matrix if FACT='F' and   
                         EQUED='Y'. */

			    dlaqsy_(uplo, &n, &a[1], &lda, &s[1], &scond, &
				    amax, equed);
			}

/*                    Solve the system and compute the condition number   
                      and error bounds using DPOSVX. */

			s_copy(srnamc_1.srnamt, "DPOSVX", (ftnlen)6, (ftnlen)
				6);
			dposvx_(fact, uplo, &n, nrhs, &a[1], &lda, &afac[1], &
				lda, equed, &s[1], &b[1], &lda, &x[1], &lda, &
				rcond, &rwork[1], &rwork[*nrhs + 1], &work[1],
				 &iwork[1], &info);

/*                    Check the error code from DPOSVX. */

			if (info != izero) {
/* Writing concatenation */
			    i__5[0] = 1, a__1[0] = fact;
			    i__5[1] = 1, a__1[1] = uplo;
			    s_cat(ch__1, a__1, i__5, &c__2, (ftnlen)2);
			    alaerh_(path, "DPOSVX", &info, &izero, ch__1, &n, 
				    &n, &c_n1, &c_n1, nrhs, &imat, &nfail, &
				    nerrs, nout);
			    goto L90;
			}

			if (info == 0) {
			    if (! prefac) {

/*                          Reconstruct matrix from factors and compute   
                            residual. */

				dpot01_(uplo, &n, &a[1], &lda, &afac[1], &lda,
					 &rwork[(*nrhs << 1) + 1], result);
				k1 = 1;
			    } else {
				k1 = 2;
			    }

/*                       Compute residual of the computed solution. */

			    dlacpy_("Full", &n, nrhs, &bsav[1], &lda, &work[1]
				    , &lda);
			    dpot02_(uplo, &n, nrhs, &asav[1], &lda, &x[1], &
				    lda, &work[1], &lda, &rwork[(*nrhs << 1) 
				    + 1], &result[1]);

/*                       Check solution from generated exact solution. */

			    if (nofact || prefac && lsame_(equed, "N")) {
				dget04_(&n, nrhs, &x[1], &lda, &xact[1], &lda,
					 &rcondc, &result[2]);
			    } else {
				dget04_(&n, nrhs, &x[1], &lda, &xact[1], &lda,
					 &roldc, &result[2]);
			    }

/*                       Check the error bounds from iterative   
                         refinement. */

			    dpot05_(uplo, &n, nrhs, &asav[1], &lda, &b[1], &
				    lda, &x[1], &lda, &xact[1], &lda, &rwork[
				    1], &rwork[*nrhs + 1], &result[3]);
			} else {
			    k1 = 6;
			}

/*                    Compare RCOND from DPOSVX with the computed value   
                      in RCONDC. */

			result[5] = dget06_(&rcond, &rcondc);

/*                    Print information about the tests that did not pass   
                      the threshold. */

			for (k = k1; k <= 6; ++k) {
			    if (result[k - 1] >= *thresh) {
				if (nfail == 0 && nerrs == 0) {
				    aladhd_(nout, path);
				}
				if (prefac) {
				    io___51.ciunit = *nout;
				    s_wsfe(&io___51);
				    do_fio(&c__1, "DPOSVX", (ftnlen)6);
				    do_fio(&c__1, fact, (ftnlen)1);
				    do_fio(&c__1, uplo, (ftnlen)1);
				    do_fio(&c__1, (char *)&n, (ftnlen)sizeof(
					    integer));
				    do_fio(&c__1, equed, (ftnlen)1);
				    do_fio(&c__1, (char *)&imat, (ftnlen)
					    sizeof(integer));
				    do_fio(&c__1, (char *)&k, (ftnlen)sizeof(
					    integer));
				    do_fio(&c__1, (char *)&result[k - 1], (
					    ftnlen)sizeof(doublereal));
				    e_wsfe();
				} else {
				    io___52.ciunit = *nout;
				    s_wsfe(&io___52);
				    do_fio(&c__1, "DPOSVX", (ftnlen)6);
				    do_fio(&c__1, fact, (ftnlen)1);
				    do_fio(&c__1, uplo, (ftnlen)1);
				    do_fio(&c__1, (char *)&n, (ftnlen)sizeof(
					    integer));
				    do_fio(&c__1, (char *)&imat, (ftnlen)
					    sizeof(integer));
				    do_fio(&c__1, (char *)&k, (ftnlen)sizeof(
					    integer));
				    do_fio(&c__1, (char *)&result[k - 1], (
					    ftnlen)sizeof(doublereal));
				    e_wsfe();
				}
				++nfail;
			    }
/* L80: */
			}
			nrun = nrun + 7 - k1;
L90:
			;
		    }
/* L100: */
		}
L110:
		;
	    }
L120:
	    ;
	}
/* L130: */
    }

/*     Print a summary of the results. */

    alasvm_(path, nout, &nfail, &nrun, &nerrs);

    return 0;

/*     End of DDRVPO */

} /* ddrvpo_ */

