#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_b49 = 0.;

/* Subroutine */ int ddrvsy_(logical *dotype, integer *nn, integer *nval, 
	integer *nrhs, doublereal *thresh, logical *tsterr, integer *nmax, 
	doublereal *a, doublereal *afac, doublereal *ainv, doublereal *b, 
	doublereal *x, doublereal *xact, 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*2] = "F" "N";

    /* Format strings */
    static char fmt_9999[] = "(1x,a6,\002, UPLO='\002,a1,\002', N =\002,i5"
	    ",\002, type \002,i2,\002, test \002,i2,\002, ratio =\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,i2,\002, test \002,i2,\002, "
	    "ratio =\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, imat, info;
    static char path[3], dist[1], uplo[1], type__[1];
    static integer nrun, i__, j, k, n, ifact;
    extern /* Subroutine */ int dget04_(integer *, integer *, doublereal *, 
	    integer *, doublereal *, integer *, doublereal *, doublereal *);
    static integer nfail, iseed[4];
    extern doublereal dget06_(doublereal *, doublereal *);
    static integer nbmin;
    static doublereal rcond;
    static integer nimat;
    extern /* Subroutine */ int 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;
    extern /* Subroutine */ int dsyt01_(char *, integer *, doublereal *, 
	    integer *, doublereal *, integer *, integer *, doublereal *, 
	    integer *, doublereal *, doublereal *);
    static integer iuplo, izero, i1, i2, k1, lwork, nerrs;
    static logical zerot;
    extern /* Subroutine */ int dsysv_(char *, integer *, integer *, 
	    doublereal *, integer *, integer *, doublereal *, integer *, 
	    doublereal *, integer *, integer *);
    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 integer ku, nt;
    static doublereal rcondc;
    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 xlaenv_(integer *, integer *), derrvx_(char *,
	     integer *), dsytrf_(char *, integer *, doublereal *, 
	    integer *, integer *, doublereal *, integer *, integer *);
    static doublereal result[6];
    extern /* Subroutine */ int dsytri_(char *, integer *, doublereal *, 
	    integer *, integer *, doublereal *, integer *), dsysvx_(
	    char *, char *, integer *, integer *, doublereal *, integer *, 
	    doublereal *, integer *, integer *, doublereal *, integer *, 
	    doublereal *, integer *, doublereal *, doublereal *, doublereal *,
	     doublereal *, integer *, integer *, integer *);
    static integer lda;

    /* Fortran I/O blocks */
    static cilist io___42 = { 0, 0, 0, fmt_9999, 0 };
    static cilist io___45 = { 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   
       September 30, 1994   


    Purpose   
    =======   

    DDRVSY tests the driver routines DSYSV 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)   

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

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

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

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

    WORK    (workspace) DOUBLE PRECISION array, dimension   
                        (NMAX*max(2,NRHS))   

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

    IWORK   (workspace) INTEGER array, dimension (2*NMAX)   

    NOUT    (input) INTEGER   
            The unit number for output.   

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

       Parameter adjustments */
    --iwork;
    --rwork;
    --work;
    --xact;
    --x;
    --b;
    --ainv;
    --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, "SY", (ftnlen)2, (ftnlen)2);
    nrun = 0;
    nfail = 0;
    nerrs = 0;
    for (i__ = 1; i__ <= 4; ++i__) {
	iseed[i__ - 1] = iseedy[i__ - 1];
/* L10: */
    }
/* Computing MAX */
    i__1 = *nmax << 1, i__2 = *nmax * *nrhs;
    lwork = max(i__1,i__2);

/*     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 = 10;
	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 L170;
	    }

/*           Skip types 3, 4, 5, or 6 if the matrix size is too small. */

	    zerot = imat >= 3 && imat <= 6;
	    if (zerot && n < imat - 2) {
		goto L170;
	    }

/*           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 L160;
		}

/*              For types 3-6, zero one or more rows and columns 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;
		    }

		    if (imat < 6) {

/*                    Set row and column IZERO to zero. */

			if (iuplo == 1) {
			    ioff = (izero - 1) * lda;
			    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 {
			ioff = 0;
			if (iuplo == 1) {

/*                       Set the first IZERO rows and columns to zero. */

			    i__3 = n;
			    for (j = 1; j <= i__3; ++j) {
				i2 = min(j,izero);
				i__4 = i2;
				for (i__ = 1; i__ <= i__4; ++i__) {
				    a[ioff + i__] = 0.;
/* L60: */
				}
				ioff += lda;
/* L70: */
			    }
			} else {

/*                       Set the last IZERO rows and columns to zero. */

			    i__3 = n;
			    for (j = 1; j <= i__3; ++j) {
				i1 = max(j,izero);
				i__4 = n;
				for (i__ = i1; i__ <= i__4; ++i__) {
				    a[ioff + i__] = 0.;
/* L80: */
				}
				ioff += lda;
/* L90: */
			    }
			}
		    }
		} else {
		    izero = 0;
		}

		for (ifact = 1; ifact <= 2; ++ifact) {

/*                 Do first for FACT = 'F', then for other values. */

		    *(unsigned char *)fact = *(unsigned char *)&facts[ifact - 
			    1];

/*                 Compute the condition number for comparison with   
                   the value returned by DSYSVX. */

		    if (zerot) {
			if (ifact == 1) {
			    goto L150;
			}
			rcondc = 0.;

		    } else if (ifact == 1) {

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

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

/*                    Factor the matrix A. */

			dlacpy_(uplo, &n, &n, &a[1], &lda, &afac[1], &lda);
			dsytrf_(uplo, &n, &afac[1], &lda, &iwork[1], &work[1],
				 &lwork, &info);

/*                    Compute inv(A) and take its norm. */

			dlacpy_(uplo, &n, &n, &afac[1], &lda, &ainv[1], &lda);
			dsytri_(uplo, &n, &ainv[1], &lda, &iwork[1], &work[1],
				 &info);
			ainvnm = dlansy_("1", uplo, &n, &ainv[1], &lda, &
				rwork[1]);

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

			if (anorm <= 0. || ainvnm <= 0.) {
			    rcondc = 1.;
			} else {
			    rcondc = 1. / anorm / ainvnm;
			}
		    }

/*                 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';

/*                 --- Test DSYSV  --- */

		    if (ifact == 2) {
			dlacpy_(uplo, &n, &n, &a[1], &lda, &afac[1], &lda);
			dlacpy_("Full", &n, nrhs, &b[1], &lda, &x[1], &lda);

/*                    Factor the matrix and solve the system using DSYSV. */

			s_copy(srnamc_1.srnamt, "DSYSV ", (ftnlen)6, (ftnlen)
				6);
			dsysv_(uplo, &n, nrhs, &afac[1], &lda, &iwork[1], &x[
				1], &lda, &work[1], &lwork, &info);

/*                    Adjust the expected value of INFO to account for   
                      pivoting. */

			k = izero;
			if (k > 0) {
L100:
			    if (iwork[k] < 0) {
				if (iwork[k] != -k) {
				    k = -iwork[k];
				    goto L100;
				}
			    } else if (iwork[k] != k) {
				k = iwork[k];
				goto L100;
			    }
			}

/*                    Check error code from DSYSV . */

			if (info != k) {
			    alaerh_(path, "DSYSV ", &info, &k, uplo, &n, &n, &
				    c_n1, &c_n1, nrhs, &imat, &nfail, &nerrs, 
				    nout);
			    goto L120;
			} else if (info != 0) {
			    goto L120;
			}

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

			dsyt01_(uplo, &n, &a[1], &lda, &afac[1], &lda, &iwork[
				1], &ainv[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__3 = nt;
			for (k = 1; k <= i__3; ++k) {
			    if (result[k - 1] >= *thresh) {
				if (nfail == 0 && nerrs == 0) {
				    aladhd_(nout, path);
				}
				io___42.ciunit = *nout;
				s_wsfe(&io___42);
				do_fio(&c__1, "DSYSV ", (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;
			    }
/* L110: */
			}
			nrun += nt;
L120:
			;
		    }

/*                 --- Test DSYSVX --- */

		    if (ifact == 2) {
			dlaset_(uplo, &n, &n, &c_b49, &c_b49, &afac[1], &lda);
		    }
		    dlaset_("Full", &n, nrhs, &c_b49, &c_b49, &x[1], &lda);

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

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

/*                 Adjust the expected value of INFO to account for   
                   pivoting. */

		    k = izero;
		    if (k > 0) {
L130:
			if (iwork[k] < 0) {
			    if (iwork[k] != -k) {
				k = -iwork[k];
				goto L130;
			    }
			} else if (iwork[k] != k) {
			    k = iwork[k];
			    goto L130;
			}
		    }

/*                 Check the error code from DSYSVX. */

		    if (info != k) {
/* 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, "DSYSVX", &info, &k, ch__1, &n, &n, &
				c_n1, &c_n1, nrhs, &imat, &nfail, &nerrs, 
				nout);
			goto L150;
		    }

		    if (info == 0) {
			if (ifact >= 2) {

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

			    dsyt01_(uplo, &n, &a[1], &lda, &afac[1], &lda, &
				    iwork[1], &ainv[1], &lda, &rwork[(*nrhs <<
				     1) + 1], result);
			    k1 = 1;
			} else {
			    k1 = 2;
			}

/*                    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[(*nrhs << 1) + 1], &
				result[1]);

/*                    Check solution from generated exact solution. */

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

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

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

/*                 Compare RCOND from DSYSVX 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);
			    }
			    io___45.ciunit = *nout;
			    s_wsfe(&io___45);
			    do_fio(&c__1, "DSYSVX", (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;
			}
/* L140: */
		    }
		    nrun = nrun + 7 - k1;

L150:
		    ;
		}

L160:
		;
	    }
L170:
	    ;
	}
/* L180: */
    }

/*     Print a summary of the results. */

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

    return 0;

/*     End of DDRVSY */

} /* ddrvsy_ */

