#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__2 = 2;
static integer c__0 = 0;
static integer c_n1 = -1;
static integer c__1 = 1;
static real c_b23 = 1.f;
static real c_b24 = 0.f;

/* Subroutine */ int sdrvpt_(logical *dotype, integer *nn, integer *nval, 
	integer *nrhs, real *thresh, logical *tsterr, real *a, real *d__, 
	real *e, real *b, real *x, real *xact, real *work, real *rwork, 
	integer *nout)
{
    /* Initialized data */

    static integer iseedy[4] = { 0,0,0,1 };

    /* Format strings */
    static char fmt_9999[] = "(1x,a6,\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', N =\002,i5"
	    ",\002, type \002,i2,\002, test \002,i2,\002, ratio = \002,g12.5)";

    /* System generated locals */
    integer i__1, i__2, i__3, i__4;
    real r__1, r__2, r__3;

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

    /* Local variables */
    static char fact[1];
    static real cond;
    static integer mode;
    static real dmax__;
    static integer imat, info;
    static char path[3], dist[1], type__[1];
    static integer nrun, i__, j, k, n, ifact, nfail, iseed[4];
    static real z__[3], rcond;
    extern /* Subroutine */ int sget04_(integer *, integer *, real *, integer 
	    *, real *, integer *, real *, real *), sscal_(integer *, real *, 
	    real *, integer *);
    static integer nimat;
    extern doublereal sget06_(real *, real *);
    static real anorm;
    static integer izero, nerrs;
    extern doublereal sasum_(integer *, real *, integer *);
    extern /* Subroutine */ int sptt01_(integer *, real *, real *, real *, 
	    real *, real *, real *);
    static integer k1;
    extern /* Subroutine */ int scopy_(integer *, real *, integer *, real *, 
	    integer *), sptt02_(integer *, integer *, real *, real *, real *, 
	    integer *, real *, integer *, real *), sptt05_(integer *, integer 
	    *, real *, real *, real *, integer *, real *, integer *, real *, 
	    integer *, real *, real *, real *);
    static logical zerot;
    extern /* Subroutine */ int sptsv_(integer *, integer *, real *, real *, 
	    real *, integer *, integer *), slatb4_(char *, integer *, integer 
	    *, integer *, char *, integer *, integer *, real *, integer *, 
	    real *, char *);
    static integer ia;
    extern /* Subroutine */ int aladhd_(integer *, char *);
    static integer in, kl;
    extern /* Subroutine */ int alaerh_(char *, char *, integer *, integer *, 
	    char *, integer *, integer *, integer *, integer *, integer *, 
	    integer *, integer *, integer *, integer *);
    static integer ku, ix, nt;
    static real rcondc;
    extern integer isamax_(integer *, real *, integer *);
    extern /* Subroutine */ int alasvm_(char *, integer *, integer *, integer 
	    *, integer *);
    static real ainvnm;
    extern /* Subroutine */ int slacpy_(char *, integer *, integer *, real *, 
	    integer *, real *, integer *), slaset_(char *, integer *, 
	    integer *, real *, real *, real *, integer *), slaptm_(
	    integer *, integer *, real *, real *, real *, real *, integer *, 
	    real *, real *, integer *), slatms_(integer *, integer *, char *, 
	    integer *, char *, real *, integer *, real *, real *, integer *, 
	    integer *, char *, real *, integer *, real *, integer *);
    extern doublereal slanst_(char *, integer *, real *, real *);
    extern /* Subroutine */ int slarnv_(integer *, integer *, integer *, real 
	    *);
    static real result[6];
    extern /* Subroutine */ int spttrf_(integer *, real *, real *, integer *),
	     serrvx_(char *, integer *), spttrs_(integer *, integer *,
	     real *, real *, real *, integer *, integer *), sptsvx_(char *, 
	    integer *, integer *, real *, real *, real *, real *, real *, 
	    integer *, real *, integer *, real *, real *, real *, real *, 
	    integer *);
    static integer lda;

    /* Fortran I/O blocks */
    static cilist io___35 = { 0, 0, 0, fmt_9999, 0 };
    static cilist io___38 = { 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   
    =======   

    SDRVPT tests SPTSV 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) 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.   

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

    A       (workspace) REAL array, dimension (NMAX*2)   

    D       (workspace) REAL array, dimension (NMAX*2)   

    E       (workspace) REAL array, dimension (NMAX*2)   

    B       (workspace) REAL array, dimension (NMAX*NRHS)   

    X       (workspace) REAL array, dimension (NMAX*NRHS)   

    XACT    (workspace) REAL array, dimension (NMAX*NRHS)   

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

    RWORK   (workspace) REAL array, dimension   
                        (max(NMAX,2*NRHS))   

    NOUT    (input) INTEGER   
            The unit number for output.   

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

       Parameter adjustments */
    --rwork;
    --work;
    --xact;
    --x;
    --b;
    --e;
    --d__;
    --a;
    --nval;
    --dotype;

    /* Function Body */

    s_copy(path, "Single precision", (ftnlen)1, (ftnlen)16);
    s_copy(path + 1, "PT", (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) {
	serrvx_(path, nout);
    }
    infoc_1.infot = 0;

    i__1 = *nn;
    for (in = 1; in <= i__1; ++in) {

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

	n = nval[in];
	lda = max(1,n);
	nimat = 12;
	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 (n > 0 && ! dotype[imat]) {
		goto L110;
	    }

/*           Set up parameters with SLATB4. */

	    slatb4_(path, &imat, &n, &n, type__, &kl, &ku, &anorm, &mode, &
		    cond, dist);

	    zerot = imat >= 8 && imat <= 10;
	    if (imat <= 6) {

/*              Type 1-6:  generate a symmetric tridiagonal matrix of   
                known condition number in lower triangular band storage. */

		s_copy(srnamc_1.srnamt, "SLATMS", (ftnlen)6, (ftnlen)6);
		slatms_(&n, &n, dist, iseed, type__, &rwork[1], &mode, &cond, 
			&anorm, &kl, &ku, "B", &a[1], &c__2, &work[1], &info);

/*              Check the error code from SLATMS. */

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

/*              Copy the matrix to D and E. */

		ia = 1;
		i__3 = n - 1;
		for (i__ = 1; i__ <= i__3; ++i__) {
		    d__[i__] = a[ia];
		    e[i__] = a[ia + 1];
		    ia += 2;
/* L20: */
		}
		if (n > 0) {
		    d__[n] = a[ia];
		}
	    } else {

/*              Type 7-12:  generate a diagonally dominant matrix with   
                unknown condition number in the vectors D and E. */

		if (! zerot || ! dotype[7]) {

/*                 Let D and E have values from [-1,1]. */

		    slarnv_(&c__2, iseed, &n, &d__[1]);
		    i__3 = n - 1;
		    slarnv_(&c__2, iseed, &i__3, &e[1]);

/*                 Make the tridiagonal matrix diagonally dominant. */

		    if (n == 1) {
			d__[1] = dabs(d__[1]);
		    } else {
			d__[1] = dabs(d__[1]) + dabs(e[1]);
			d__[n] = (r__1 = d__[n], dabs(r__1)) + (r__2 = e[n - 
				1], dabs(r__2));
			i__3 = n - 1;
			for (i__ = 2; i__ <= i__3; ++i__) {
			    d__[i__] = (r__1 = d__[i__], dabs(r__1)) + (r__2 =
				     e[i__], dabs(r__2)) + (r__3 = e[i__ - 1],
				     dabs(r__3));
/* L30: */
			}
		    }

/*                 Scale D and E so the maximum element is ANORM. */

		    ix = isamax_(&n, &d__[1], &c__1);
		    dmax__ = d__[ix];
		    r__1 = anorm / dmax__;
		    sscal_(&n, &r__1, &d__[1], &c__1);
		    if (n > 1) {
			i__3 = n - 1;
			r__1 = anorm / dmax__;
			sscal_(&i__3, &r__1, &e[1], &c__1);
		    }

		} else if (izero > 0) {

/*                 Reuse the last matrix by copying back the zeroed out   
                   elements. */

		    if (izero == 1) {
			d__[1] = z__[1];
			if (n > 1) {
			    e[1] = z__[2];
			}
		    } else if (izero == n) {
			e[n - 1] = z__[0];
			d__[n] = z__[1];
		    } else {
			e[izero - 1] = z__[0];
			d__[izero] = z__[1];
			e[izero] = z__[2];
		    }
		}

/*              For types 8-10, set one row and column of the matrix to   
                zero. */

		izero = 0;
		if (imat == 8) {
		    izero = 1;
		    z__[1] = d__[1];
		    d__[1] = 0.f;
		    if (n > 1) {
			z__[2] = e[1];
			e[1] = 0.f;
		    }
		} else if (imat == 9) {
		    izero = n;
		    if (n > 1) {
			z__[0] = e[n - 1];
			e[n - 1] = 0.f;
		    }
		    z__[1] = d__[n];
		    d__[n] = 0.f;
		} else if (imat == 10) {
		    izero = (n + 1) / 2;
		    if (izero > 1) {
			z__[0] = e[izero - 1];
			z__[2] = e[izero];
			e[izero - 1] = 0.f;
			e[izero] = 0.f;
		    }
		    z__[1] = d__[izero];
		    d__[izero] = 0.f;
		}
	    }

/*           Generate NRHS random solution vectors. */

	    ix = 1;
	    i__3 = *nrhs;
	    for (j = 1; j <= i__3; ++j) {
		slarnv_(&c__2, iseed, &n, &xact[ix]);
		ix += lda;
/* L40: */
	    }

/*           Set the right hand side. */

	    slaptm_(&n, nrhs, &c_b23, &d__[1], &e[1], &xact[1], &lda, &c_b24, 
		    &b[1], &lda);

	    for (ifact = 1; ifact <= 2; ++ifact) {
		if (ifact == 1) {
		    *(unsigned char *)fact = 'F';
		} else {
		    *(unsigned char *)fact = 'N';
		}

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

		if (zerot) {
		    if (ifact == 1) {
			goto L100;
		    }
		    rcondc = 0.f;

		} else if (ifact == 1) {

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

		    anorm = slanst_("1", &n, &d__[1], &e[1]);

		    scopy_(&n, &d__[1], &c__1, &d__[n + 1], &c__1);
		    if (n > 1) {
			i__3 = n - 1;
			scopy_(&i__3, &e[1], &c__1, &e[n + 1], &c__1);
		    }

/*                 Factor the matrix A. */

		    spttrf_(&n, &d__[n + 1], &e[n + 1], &info);

/*                 Use SPTTRS to solve for one column at a time of   
                   inv(A), computing the maximum column sum as we go. */

		    ainvnm = 0.f;
		    i__3 = n;
		    for (i__ = 1; i__ <= i__3; ++i__) {
			i__4 = n;
			for (j = 1; j <= i__4; ++j) {
			    x[j] = 0.f;
/* L50: */
			}
			x[i__] = 1.f;
			spttrs_(&n, &c__1, &d__[n + 1], &e[n + 1], &x[1], &
				lda, &info);
/* Computing MAX */
			r__1 = ainvnm, r__2 = sasum_(&n, &x[1], &c__1);
			ainvnm = dmax(r__1,r__2);
/* L60: */
		    }

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

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

		if (ifact == 2) {

/*                 --- Test SPTSV -- */

		    scopy_(&n, &d__[1], &c__1, &d__[n + 1], &c__1);
		    if (n > 1) {
			i__3 = n - 1;
			scopy_(&i__3, &e[1], &c__1, &e[n + 1], &c__1);
		    }
		    slacpy_("Full", &n, nrhs, &b[1], &lda, &x[1], &lda);

/*                 Factor A as L*D*L' and solve the system A*X = B. */

		    s_copy(srnamc_1.srnamt, "SPTSV ", (ftnlen)6, (ftnlen)6);
		    sptsv_(&n, nrhs, &d__[n + 1], &e[n + 1], &x[1], &lda, &
			    info);

/*                 Check error code from SPTSV . */

		    if (info != izero) {
			alaerh_(path, "SPTSV ", &info, &izero, " ", &n, &n, &
				c__1, &c__1, nrhs, &imat, &nfail, &nerrs, 
				nout);
		    }
		    nt = 0;
		    if (izero == 0) {

/*                    Check the factorization by computing the ratio   
                         norm(L*D*L' - A) / (n * norm(A) * EPS ) */

			sptt01_(&n, &d__[1], &e[1], &d__[n + 1], &e[n + 1], &
				work[1], result);

/*                    Compute the residual in the solution. */

			slacpy_("Full", &n, nrhs, &b[1], &lda, &work[1], &lda);
			sptt02_(&n, nrhs, &d__[1], &e[1], &x[1], &lda, &work[
				1], &lda, &result[1]);

/*                    Check solution from generated exact solution. */

			sget04_(&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___35.ciunit = *nout;
			    s_wsfe(&io___35);
			    do_fio(&c__1, "SPTSV ", (ftnlen)6);
			    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(real));
			    e_wsfe();
			    ++nfail;
			}
/* L70: */
		    }
		    nrun += nt;
		}

/*              --- Test SPTSVX --- */

		if (ifact > 1) {

/*                 Initialize D( N+1:2*N ) and E( N+1:2*N ) to zero. */

		    i__3 = n - 1;
		    for (i__ = 1; i__ <= i__3; ++i__) {
			d__[n + i__] = 0.f;
			e[n + i__] = 0.f;
/* L80: */
		    }
		    if (n > 0) {
			d__[n + n] = 0.f;
		    }
		}

		slaset_("Full", &n, nrhs, &c_b24, &c_b24, &x[1], &lda);

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

		s_copy(srnamc_1.srnamt, "SPTSVX", (ftnlen)6, (ftnlen)6);
		sptsvx_(fact, &n, nrhs, &d__[1], &e[1], &d__[n + 1], &e[n + 1]
			, &b[1], &lda, &x[1], &lda, &rcond, &rwork[1], &rwork[
			*nrhs + 1], &work[1], &info);

/*              Check the error code from SPTSVX. */

		if (info != izero) {
		    alaerh_(path, "SPTSVX", &info, &izero, fact, &n, &n, &
			    c__1, &c__1, nrhs, &imat, &nfail, &nerrs, nout);
		}
		if (izero == 0) {
		    if (ifact == 2) {

/*                    Check the factorization by computing the ratio   
                         norm(L*D*L' - A) / (n * norm(A) * EPS ) */

			k1 = 1;
			sptt01_(&n, &d__[1], &e[1], &d__[n + 1], &e[n + 1], &
				work[1], result);
		    } else {
			k1 = 2;
		    }

/*                 Compute the residual in the solution. */

		    slacpy_("Full", &n, nrhs, &b[1], &lda, &work[1], &lda);
		    sptt02_(&n, nrhs, &d__[1], &e[1], &x[1], &lda, &work[1], &
			    lda, &result[1]);

/*                 Check solution from generated exact solution. */

		    sget04_(&n, nrhs, &x[1], &lda, &xact[1], &lda, &rcondc, &
			    result[2]);

/*                 Check error bounds from iterative refinement. */

		    sptt05_(&n, nrhs, &d__[1], &e[1], &b[1], &lda, &x[1], &
			    lda, &xact[1], &lda, &rwork[1], &rwork[*nrhs + 1],
			     &result[3]);
		} else {
		    k1 = 6;
		}

/*              Check the reciprocal of the condition number. */

		result[5] = sget06_(&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___38.ciunit = *nout;
			s_wsfe(&io___38);
			do_fio(&c__1, "SPTSVX", (ftnlen)6);
			do_fio(&c__1, fact, (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(
				real));
			e_wsfe();
			++nfail;
		    }
/* L90: */
		}
		nrun = nrun + 7 - k1;
L100:
		;
	    }
L110:
	    ;
	}
/* L120: */
    }

/*     Print a summary of the results. */

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

    return 0;

/*     End of SDRVPT */

} /* sdrvpt_ */