Esempio n. 1
0
/* Subroutine */ int stbcon_(char *norm, char *uplo, char *diag, integer *n, 
	integer *kd, real *ab, integer *ldab, real *rcond, real *work, 
	integer *iwork, integer *info)
{
    /* System generated locals */
    integer ab_dim1, ab_offset, i__1;
    real r__1;

    /* Local variables */
    integer ix, kase, kase1;
    real scale;
    extern logical lsame_(char *, char *);
    integer isave[3];
    real anorm;
    extern /* Subroutine */ int srscl_(integer *, real *, real *, integer *);
    logical upper;
    real xnorm;
    extern /* Subroutine */ int slacn2_(integer *, real *, real *, integer *, 
	    real *, integer *, integer *);
    extern doublereal slamch_(char *);
    extern /* Subroutine */ int xerbla_(char *, integer *);
    extern integer isamax_(integer *, real *, integer *);
    extern doublereal slantb_(char *, char *, char *, integer *, integer *, 
	    real *, integer *, real *);
    real ainvnm;
    extern /* Subroutine */ int slatbs_(char *, char *, char *, char *, 
	    integer *, integer *, real *, integer *, real *, real *, real *, 
	    integer *);
    logical onenrm;
    char normin[1];
    real smlnum;
    logical nounit;


/*  -- LAPACK routine (version 3.2) -- */
/*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
/*     November 2006 */

/*     Modified to call SLACN2 in place of SLACON, 7 Feb 03, SJH. */

/*     .. Scalar Arguments .. */
/*     .. */
/*     .. Array Arguments .. */
/*     .. */

/*  Purpose */
/*  ======= */

/*  STBCON estimates the reciprocal of the condition number of a */
/*  triangular band matrix A, in either the 1-norm or the infinity-norm. */

/*  The norm of A is computed and an estimate is obtained for */
/*  norm(inv(A)), then the reciprocal of the condition number is */
/*  computed as */
/*     RCOND = 1 / ( norm(A) * norm(inv(A)) ). */

/*  Arguments */
/*  ========= */

/*  NORM    (input) CHARACTER*1 */
/*          Specifies whether the 1-norm condition number or the */
/*          infinity-norm condition number is required: */
/*          = '1' or 'O':  1-norm; */
/*          = 'I':         Infinity-norm. */

/*  UPLO    (input) CHARACTER*1 */
/*          = 'U':  A is upper triangular; */
/*          = 'L':  A is lower triangular. */

/*  DIAG    (input) CHARACTER*1 */
/*          = 'N':  A is non-unit triangular; */
/*          = 'U':  A is unit triangular. */

/*  N       (input) INTEGER */
/*          The order of the matrix A.  N >= 0. */

/*  KD      (input) INTEGER */
/*          The number of superdiagonals or subdiagonals of the */
/*          triangular band matrix A.  KD >= 0. */

/*  AB      (input) REAL array, dimension (LDAB,N) */
/*          The upper or lower triangular band matrix A, stored in the */
/*          first kd+1 rows of the array. The j-th column of A is stored */
/*          in the j-th column of the array AB as follows: */
/*          if UPLO = 'U', AB(kd+1+i-j,j) = A(i,j) for max(1,j-kd)<=i<=j; */
/*          if UPLO = 'L', AB(1+i-j,j)    = A(i,j) for j<=i<=min(n,j+kd). */
/*          If DIAG = 'U', the diagonal elements of A are not referenced */
/*          and are assumed to be 1. */

/*  LDAB    (input) INTEGER */
/*          The leading dimension of the array AB.  LDAB >= KD+1. */

/*  RCOND   (output) REAL */
/*          The reciprocal of the condition number of the matrix A, */
/*          computed as RCOND = 1/(norm(A) * norm(inv(A))). */

/*  WORK    (workspace) REAL array, dimension (3*N) */

/*  IWORK   (workspace) INTEGER array, dimension (N) */

/*  INFO    (output) INTEGER */
/*          = 0:  successful exit */
/*          < 0:  if INFO = -i, the i-th argument had an illegal value */

/*  ===================================================================== */

/*     .. Parameters .. */
/*     .. */
/*     .. Local Scalars .. */
/*     .. */
/*     .. Local Arrays .. */
/*     .. */
/*     .. External Functions .. */
/*     .. */
/*     .. External Subroutines .. */
/*     .. */
/*     .. Intrinsic Functions .. */
/*     .. */
/*     .. Executable Statements .. */

/*     Test the input parameters. */

    /* Parameter adjustments */
    ab_dim1 = *ldab;
    ab_offset = 1 + ab_dim1;
    ab -= ab_offset;
    --work;
    --iwork;

    /* Function Body */
    *info = 0;
    upper = lsame_(uplo, "U");
    onenrm = *(unsigned char *)norm == '1' || lsame_(norm, "O");
    nounit = lsame_(diag, "N");

    if (! onenrm && ! lsame_(norm, "I")) {
	*info = -1;
    } else if (! upper && ! lsame_(uplo, "L")) {
	*info = -2;
    } else if (! nounit && ! lsame_(diag, "U")) {
	*info = -3;
    } else if (*n < 0) {
	*info = -4;
    } else if (*kd < 0) {
	*info = -5;
    } else if (*ldab < *kd + 1) {
	*info = -7;
    }
    if (*info != 0) {
	i__1 = -(*info);
	xerbla_("STBCON", &i__1);
	return 0;
    }

/*     Quick return if possible */

    if (*n == 0) {
	*rcond = 1.f;
	return 0;
    }

    *rcond = 0.f;
    smlnum = slamch_("Safe minimum") * (real) max(1,*n);

/*     Compute the norm of the triangular matrix A. */

    anorm = slantb_(norm, uplo, diag, n, kd, &ab[ab_offset], ldab, &work[1]);

/*     Continue only if ANORM > 0. */

    if (anorm > 0.f) {

/*        Estimate the norm of the inverse of A. */

	ainvnm = 0.f;
	*(unsigned char *)normin = 'N';
	if (onenrm) {
	    kase1 = 1;
	} else {
	    kase1 = 2;
	}
	kase = 0;
L10:
	slacn2_(n, &work[*n + 1], &work[1], &iwork[1], &ainvnm, &kase, isave);
	if (kase != 0) {
	    if (kase == kase1) {

/*              Multiply by inv(A). */

		slatbs_(uplo, "No transpose", diag, normin, n, kd, &ab[
			ab_offset], ldab, &work[1], &scale, &work[(*n << 1) + 
			1], info)
			;
	    } else {

/*              Multiply by inv(A'). */

		slatbs_(uplo, "Transpose", diag, normin, n, kd, &ab[ab_offset]
, ldab, &work[1], &scale, &work[(*n << 1) + 1], info);
	    }
	    *(unsigned char *)normin = 'Y';

/*           Multiply by 1/SCALE if doing so will not cause overflow. */

	    if (scale != 1.f) {
		ix = isamax_(n, &work[1], &c__1);
		xnorm = (r__1 = work[ix], dabs(r__1));
		if (scale < xnorm * smlnum || scale == 0.f) {
		    goto L20;
		}
		srscl_(n, &scale, &work[1], &c__1);
	    }
	    goto L10;
	}

/*        Compute the estimate of the reciprocal condition number. */

	if (ainvnm != 0.f) {
	    *rcond = 1.f / anorm / ainvnm;
	}
    }

L20:
    return 0;

/*     End of STBCON */

} /* stbcon_ */
Esempio n. 2
0
/* Subroutine */ int spbcon_(char *uplo, integer *n, integer *kd, real *ab, 
	integer *ldab, real *anorm, real *rcond, real *work, integer *iwork, 
	integer *info)
{
/*  -- LAPACK 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   
    =======   

    SPBCON estimates the reciprocal of the condition number (in the   
    1-norm) of a real symmetric positive definite band matrix using the   
    Cholesky factorization A = U**T*U or A = L*L**T computed by SPBTRF.   

    An estimate is obtained for norm(inv(A)), and the reciprocal of the   
    condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))).   

    Arguments   
    =========   

    UPLO    (input) CHARACTER*1   
            = 'U':  Upper triangular factor stored in AB;   
            = 'L':  Lower triangular factor stored in AB.   

    N       (input) INTEGER   
            The order of the matrix A.  N >= 0.   

    KD      (input) INTEGER   
            The number of superdiagonals of the matrix A if UPLO = 'U',   
            or the number of subdiagonals if UPLO = 'L'.  KD >= 0.   

    AB      (input) REAL array, dimension (LDAB,N)   
            The triangular factor U or L from the Cholesky factorization   
            A = U**T*U or A = L*L**T of the band matrix A, stored in the   
            first KD+1 rows of the array.  The j-th column of U or L is   
            stored in the j-th column of the array AB as follows:   
            if UPLO ='U', AB(kd+1+i-j,j) = U(i,j) for max(1,j-kd)<=i<=j;   
            if UPLO ='L', AB(1+i-j,j)    = L(i,j) for j<=i<=min(n,j+kd).   

    LDAB    (input) INTEGER   
            The leading dimension of the array AB.  LDAB >= KD+1.   

    ANORM   (input) REAL   
            The 1-norm (or infinity-norm) of the symmetric band matrix A.   

    RCOND   (output) REAL   
            The reciprocal of the condition number of the matrix A,   
            computed as RCOND = 1/(ANORM * AINVNM), where AINVNM is an   
            estimate of the 1-norm of inv(A) computed in this routine.   

    WORK    (workspace) REAL array, dimension (3*N)   

    IWORK   (workspace) INTEGER array, dimension (N)   

    INFO    (output) INTEGER   
            = 0:  successful exit   
            < 0:  if INFO = -i, the i-th argument had an illegal value   

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


       Test the input parameters.   

       Parameter adjustments */
    /* Table of constant values */
    static integer c__1 = 1;
    
    /* System generated locals */
    integer ab_dim1, ab_offset, i__1;
    real r__1;
    /* Local variables */
    static integer kase;
    static real scale;
    extern logical lsame_(char *, char *);
    extern /* Subroutine */ int srscl_(integer *, real *, real *, integer *);
    static logical upper;
    static integer ix;
    static real scalel;
    extern doublereal slamch_(char *);
    static real scaleu;
    extern /* Subroutine */ int xerbla_(char *, integer *), slacon_(
	    integer *, real *, real *, integer *, real *, integer *);
    extern integer isamax_(integer *, real *, integer *);
    static real ainvnm;
    extern /* Subroutine */ int slatbs_(char *, char *, char *, char *, 
	    integer *, integer *, real *, integer *, real *, real *, real *, 
	    integer *);
    static char normin[1];
    static real smlnum;


    ab_dim1 = *ldab;
    ab_offset = 1 + ab_dim1 * 1;
    ab -= ab_offset;
    --work;
    --iwork;

    /* Function Body */
    *info = 0;
    upper = lsame_(uplo, "U");
    if (! upper && ! lsame_(uplo, "L")) {
	*info = -1;
    } else if (*n < 0) {
	*info = -2;
    } else if (*kd < 0) {
	*info = -3;
    } else if (*ldab < *kd + 1) {
	*info = -5;
    } else if (*anorm < 0.f) {
	*info = -6;
    }
    if (*info != 0) {
	i__1 = -(*info);
	xerbla_("SPBCON", &i__1);
	return 0;
    }

/*     Quick return if possible */

    *rcond = 0.f;
    if (*n == 0) {
	*rcond = 1.f;
	return 0;
    } else if (*anorm == 0.f) {
	return 0;
    }

    smlnum = slamch_("Safe minimum");

/*     Estimate the 1-norm of the inverse. */

    kase = 0;
    *(unsigned char *)normin = 'N';
L10:
    slacon_(n, &work[*n + 1], &work[1], &iwork[1], &ainvnm, &kase);
    if (kase != 0) {
	if (upper) {

/*           Multiply by inv(U'). */

	    slatbs_("Upper", "Transpose", "Non-unit", normin, n, kd, &ab[
		    ab_offset], ldab, &work[1], &scalel, &work[(*n << 1) + 1],
		     info);
	    *(unsigned char *)normin = 'Y';

/*           Multiply by inv(U). */

	    slatbs_("Upper", "No transpose", "Non-unit", normin, n, kd, &ab[
		    ab_offset], ldab, &work[1], &scaleu, &work[(*n << 1) + 1],
		     info);
	} else {

/*           Multiply by inv(L). */

	    slatbs_("Lower", "No transpose", "Non-unit", normin, n, kd, &ab[
		    ab_offset], ldab, &work[1], &scalel, &work[(*n << 1) + 1],
		     info);
	    *(unsigned char *)normin = 'Y';

/*           Multiply by inv(L'). */

	    slatbs_("Lower", "Transpose", "Non-unit", normin, n, kd, &ab[
		    ab_offset], ldab, &work[1], &scaleu, &work[(*n << 1) + 1],
		     info);
	}

/*        Multiply by 1/SCALE if doing so will not cause overflow. */

	scale = scalel * scaleu;
	if (scale != 1.f) {
	    ix = isamax_(n, &work[1], &c__1);
	    if (scale < (r__1 = work[ix], dabs(r__1)) * smlnum || scale == 
		    0.f) {
		goto L20;
	    }
	    srscl_(n, &scale, &work[1], &c__1);
	}
	goto L10;
    }

/*     Compute the estimate of the reciprocal condition number. */

    if (ainvnm != 0.f) {
	*rcond = 1.f / ainvnm / *anorm;
    }

L20:

    return 0;

/*     End of SPBCON */

} /* spbcon_ */
Esempio n. 3
0
/* Subroutine */ int serrtr_(char *path, integer *nunit)
{
    /* Builtin functions */
    integer s_wsle(cilist *), e_wsle(void);
    /* Subroutine */ int s_copy(char *, char *, ftnlen, ftnlen);

    /* Local variables */
    real a[4]	/* was [2][2] */, b[2], w[2], x[2];
    char c2[2];
    real r1[2], r2[2];
    integer iw[2], info;
    real scale, rcond;
    extern /* Subroutine */ int strti2_(char *, char *, integer *, real *, 
	    integer *, integer *), alaesm_(char *, logical *, 
	    integer *);
    extern logical lsamen_(integer *, char *, char *);
    extern /* Subroutine */ int chkxer_(char *, integer *, integer *, logical 
	    *, logical *), slatbs_(char *, char *, char *, char *, 
	    integer *, integer *, real *, integer *, real *, real *, real *, 
	    integer *), stbcon_(char *, char *
, char *, integer *, integer *, real *, integer *, real *, real *, 
	     integer *, integer *), stbrfs_(char *, 
	    char *, char *, integer *, integer *, integer *, real *, integer *
, real *, integer *, real *, integer *, real *, real *, real *, 
	    integer *, integer *), slatps_(char *, 
	    char *, char *, char *, integer *, real *, real *, real *, real *, 
	     integer *), stpcon_(char *, char 
	    *, char *, integer *, real *, real *, real *, integer *, integer *
), slatrs_(char *, char *, char *, char *, 
	     integer *, real *, integer *, real *, real *, real *, integer *), strcon_(char *, char *, char *, 
	    integer *, real *, integer *, real *, real *, integer *, integer *
), stbtrs_(char *, char *, char *, 
	    integer *, integer *, integer *, real *, integer *, real *, 
	    integer *, integer *), stprfs_(char *, 
	    char *, char *, integer *, integer *, real *, real *, integer *, 
	    real *, integer *, real *, real *, real *, integer *, integer *), strrfs_(char *, char *, char *, integer *
, integer *, real *, integer *, real *, integer *, real *, 
	    integer *, real *, real *, real *, integer *, integer *), stptri_(char *, char *, integer *, real *, 
	    integer *), strtri_(char *, char *, integer *, 
	    real *, integer *, integer *), stptrs_(char *, 
	    char *, char *, integer *, integer *, real *, real *, integer *, 
	    integer *), strtrs_(char *, char *, char *
, integer *, integer *, real *, integer *, real *, integer *, 
	    integer *);

    /* Fortran I/O blocks */
    static cilist io___1 = { 0, 0, 0, 0, 0 };



/*  -- LAPACK test routine (version 3.1) -- */
/*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
/*     November 2006 */

/*     .. Scalar Arguments .. */
/*     .. */

/*  Purpose */
/*  ======= */

/*  SERRTR tests the error exits for the REAL triangular */
/*  routines. */

/*  Arguments */
/*  ========= */

/*  PATH    (input) CHARACTER*3 */
/*          The LAPACK path name for the routines to be tested. */

/*  NUNIT   (input) INTEGER */
/*          The unit number for output. */

/*  ===================================================================== */

/*     .. Parameters .. */
/*     .. */
/*     .. Local Scalars .. */
/*     .. */
/*     .. Local Arrays .. */
/*     .. */
/*     .. External Functions .. */
/*     .. */
/*     .. External Subroutines .. */
/*     .. */
/*     .. Scalars in Common .. */
/*     .. */
/*     .. Common blocks .. */
/*     .. */
/*     .. Executable Statements .. */

    infoc_1.nout = *nunit;
    io___1.ciunit = infoc_1.nout;
    s_wsle(&io___1);
    e_wsle();
    s_copy(c2, path + 1, (ftnlen)2, (ftnlen)2);
    a[0] = 1.f;
    a[2] = 2.f;
    a[3] = 3.f;
    a[1] = 4.f;
    infoc_1.ok = TRUE_;

    if (lsamen_(&c__2, c2, "TR")) {

/*        Test error exits for the general triangular routines. */

/*        STRTRI */

	s_copy(srnamc_1.srnamt, "STRTRI", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	strtri_("/", "N", &c__0, a, &c__1, &info);
	chkxer_("STRTRI", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	strtri_("U", "/", &c__0, a, &c__1, &info);
	chkxer_("STRTRI", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	strtri_("U", "N", &c_n1, a, &c__1, &info);
	chkxer_("STRTRI", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	strtri_("U", "N", &c__2, a, &c__1, &info);
	chkxer_("STRTRI", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STRTI2 */

	s_copy(srnamc_1.srnamt, "STRTI2", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	strti2_("/", "N", &c__0, a, &c__1, &info);
	chkxer_("STRTI2", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	strti2_("U", "/", &c__0, a, &c__1, &info);
	chkxer_("STRTI2", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	strti2_("U", "N", &c_n1, a, &c__1, &info);
	chkxer_("STRTI2", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	strti2_("U", "N", &c__2, a, &c__1, &info);
	chkxer_("STRTI2", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STRTRS */

	s_copy(srnamc_1.srnamt, "STRTRS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	strtrs_("/", "N", "N", &c__0, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STRTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	strtrs_("U", "/", "N", &c__0, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STRTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	strtrs_("U", "N", "/", &c__0, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STRTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	strtrs_("U", "N", "N", &c_n1, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STRTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	strtrs_("U", "N", "N", &c__0, &c_n1, a, &c__1, x, &c__1, &info);
	chkxer_("STRTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 7;
	strtrs_("U", "N", "N", &c__2, &c__1, a, &c__1, x, &c__2, &info);
	chkxer_("STRTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 9;
	strtrs_("U", "N", "N", &c__2, &c__1, a, &c__2, x, &c__1, &info);
	chkxer_("STRTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STRRFS */

	s_copy(srnamc_1.srnamt, "STRRFS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	strrfs_("/", "N", "N", &c__0, &c__0, a, &c__1, b, &c__1, x, &c__1, r1, 
		 r2, w, iw, &info);
	chkxer_("STRRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	strrfs_("U", "/", "N", &c__0, &c__0, a, &c__1, b, &c__1, x, &c__1, r1, 
		 r2, w, iw, &info);
	chkxer_("STRRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	strrfs_("U", "N", "/", &c__0, &c__0, a, &c__1, b, &c__1, x, &c__1, r1, 
		 r2, w, iw, &info);
	chkxer_("STRRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	strrfs_("U", "N", "N", &c_n1, &c__0, a, &c__1, b, &c__1, x, &c__1, r1, 
		 r2, w, iw, &info);
	chkxer_("STRRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	strrfs_("U", "N", "N", &c__0, &c_n1, a, &c__1, b, &c__1, x, &c__1, r1, 
		 r2, w, iw, &info);
	chkxer_("STRRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 7;
	strrfs_("U", "N", "N", &c__2, &c__1, a, &c__1, b, &c__2, x, &c__2, r1, 
		 r2, w, iw, &info);
	chkxer_("STRRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 9;
	strrfs_("U", "N", "N", &c__2, &c__1, a, &c__2, b, &c__1, x, &c__2, r1, 
		 r2, w, iw, &info);
	chkxer_("STRRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 11;
	strrfs_("U", "N", "N", &c__2, &c__1, a, &c__2, b, &c__2, x, &c__1, r1, 
		 r2, w, iw, &info);
	chkxer_("STRRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STRCON */

	s_copy(srnamc_1.srnamt, "STRCON", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	strcon_("/", "U", "N", &c__0, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STRCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	strcon_("1", "/", "N", &c__0, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STRCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	strcon_("1", "U", "/", &c__0, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STRCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	strcon_("1", "U", "N", &c_n1, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STRCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 6;
	strcon_("1", "U", "N", &c__2, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STRCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        SLATRS */

	s_copy(srnamc_1.srnamt, "SLATRS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	slatrs_("/", "N", "N", "N", &c__0, a, &c__1, x, &scale, w, &info);
	chkxer_("SLATRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	slatrs_("U", "/", "N", "N", &c__0, a, &c__1, x, &scale, w, &info);
	chkxer_("SLATRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	slatrs_("U", "N", "/", "N", &c__0, a, &c__1, x, &scale, w, &info);
	chkxer_("SLATRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	slatrs_("U", "N", "N", "/", &c__0, a, &c__1, x, &scale, w, &info);
	chkxer_("SLATRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	slatrs_("U", "N", "N", "N", &c_n1, a, &c__1, x, &scale, w, &info);
	chkxer_("SLATRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 7;
	slatrs_("U", "N", "N", "N", &c__2, a, &c__1, x, &scale, w, &info);
	chkxer_("SLATRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

    } else if (lsamen_(&c__2, c2, "TP")) {

/*        Test error exits for the packed triangular routines. */

/*        STPTRI */

	s_copy(srnamc_1.srnamt, "STPTRI", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	stptri_("/", "N", &c__0, a, &info);
	chkxer_("STPTRI", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	stptri_("U", "/", &c__0, a, &info);
	chkxer_("STPTRI", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	stptri_("U", "N", &c_n1, a, &info);
	chkxer_("STPTRI", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STPTRS */

	s_copy(srnamc_1.srnamt, "STPTRS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	stptrs_("/", "N", "N", &c__0, &c__0, a, x, &c__1, &info);
	chkxer_("STPTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	stptrs_("U", "/", "N", &c__0, &c__0, a, x, &c__1, &info);
	chkxer_("STPTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	stptrs_("U", "N", "/", &c__0, &c__0, a, x, &c__1, &info);
	chkxer_("STPTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	stptrs_("U", "N", "N", &c_n1, &c__0, a, x, &c__1, &info);
	chkxer_("STPTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	stptrs_("U", "N", "N", &c__0, &c_n1, a, x, &c__1, &info);
	chkxer_("STPTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 8;
	stptrs_("U", "N", "N", &c__2, &c__1, a, x, &c__1, &info);
	chkxer_("STPTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STPRFS */

	s_copy(srnamc_1.srnamt, "STPRFS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	stprfs_("/", "N", "N", &c__0, &c__0, a, b, &c__1, x, &c__1, r1, r2, w, 
		 iw, &info);
	chkxer_("STPRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	stprfs_("U", "/", "N", &c__0, &c__0, a, b, &c__1, x, &c__1, r1, r2, w, 
		 iw, &info);
	chkxer_("STPRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	stprfs_("U", "N", "/", &c__0, &c__0, a, b, &c__1, x, &c__1, r1, r2, w, 
		 iw, &info);
	chkxer_("STPRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	stprfs_("U", "N", "N", &c_n1, &c__0, a, b, &c__1, x, &c__1, r1, r2, w, 
		 iw, &info);
	chkxer_("STPRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	stprfs_("U", "N", "N", &c__0, &c_n1, a, b, &c__1, x, &c__1, r1, r2, w, 
		 iw, &info);
	chkxer_("STPRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 8;
	stprfs_("U", "N", "N", &c__2, &c__1, a, b, &c__1, x, &c__2, r1, r2, w, 
		 iw, &info);
	chkxer_("STPRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 10;
	stprfs_("U", "N", "N", &c__2, &c__1, a, b, &c__2, x, &c__1, r1, r2, w, 
		 iw, &info);
	chkxer_("STPRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STPCON */

	s_copy(srnamc_1.srnamt, "STPCON", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	stpcon_("/", "U", "N", &c__0, a, &rcond, w, iw, &info);
	chkxer_("STPCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	stpcon_("1", "/", "N", &c__0, a, &rcond, w, iw, &info);
	chkxer_("STPCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	stpcon_("1", "U", "/", &c__0, a, &rcond, w, iw, &info);
	chkxer_("STPCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	stpcon_("1", "U", "N", &c_n1, a, &rcond, w, iw, &info);
	chkxer_("STPCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        SLATPS */

	s_copy(srnamc_1.srnamt, "SLATPS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	slatps_("/", "N", "N", "N", &c__0, a, x, &scale, w, &info);
	chkxer_("SLATPS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	slatps_("U", "/", "N", "N", &c__0, a, x, &scale, w, &info);
	chkxer_("SLATPS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	slatps_("U", "N", "/", "N", &c__0, a, x, &scale, w, &info);
	chkxer_("SLATPS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	slatps_("U", "N", "N", "/", &c__0, a, x, &scale, w, &info);
	chkxer_("SLATPS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	slatps_("U", "N", "N", "N", &c_n1, a, x, &scale, w, &info);
	chkxer_("SLATPS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

    } else if (lsamen_(&c__2, c2, "TB")) {

/*        Test error exits for the banded triangular routines. */

/*        STBTRS */

	s_copy(srnamc_1.srnamt, "STBTRS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	stbtrs_("/", "N", "N", &c__0, &c__0, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STBTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	stbtrs_("U", "/", "N", &c__0, &c__0, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STBTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	stbtrs_("U", "N", "/", &c__0, &c__0, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STBTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	stbtrs_("U", "N", "N", &c_n1, &c__0, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STBTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	stbtrs_("U", "N", "N", &c__0, &c_n1, &c__0, a, &c__1, x, &c__1, &info);
	chkxer_("STBTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 6;
	stbtrs_("U", "N", "N", &c__0, &c__0, &c_n1, a, &c__1, x, &c__1, &info);
	chkxer_("STBTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 8;
	stbtrs_("U", "N", "N", &c__2, &c__1, &c__1, a, &c__1, x, &c__2, &info);
	chkxer_("STBTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 10;
	stbtrs_("U", "N", "N", &c__2, &c__0, &c__1, a, &c__1, x, &c__1, &info);
	chkxer_("STBTRS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STBRFS */

	s_copy(srnamc_1.srnamt, "STBRFS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	stbrfs_("/", "N", "N", &c__0, &c__0, &c__0, a, &c__1, b, &c__1, x, &
		c__1, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	stbrfs_("U", "/", "N", &c__0, &c__0, &c__0, a, &c__1, b, &c__1, x, &
		c__1, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	stbrfs_("U", "N", "/", &c__0, &c__0, &c__0, a, &c__1, b, &c__1, x, &
		c__1, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	stbrfs_("U", "N", "N", &c_n1, &c__0, &c__0, a, &c__1, b, &c__1, x, &
		c__1, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	stbrfs_("U", "N", "N", &c__0, &c_n1, &c__0, a, &c__1, b, &c__1, x, &
		c__1, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 6;
	stbrfs_("U", "N", "N", &c__0, &c__0, &c_n1, a, &c__1, b, &c__1, x, &
		c__1, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 8;
	stbrfs_("U", "N", "N", &c__2, &c__1, &c__1, a, &c__1, b, &c__2, x, &
		c__2, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 10;
	stbrfs_("U", "N", "N", &c__2, &c__1, &c__1, a, &c__2, b, &c__1, x, &
		c__2, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 12;
	stbrfs_("U", "N", "N", &c__2, &c__1, &c__1, a, &c__2, b, &c__2, x, &
		c__1, r1, r2, w, iw, &info);
	chkxer_("STBRFS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        STBCON */

	s_copy(srnamc_1.srnamt, "STBCON", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	stbcon_("/", "U", "N", &c__0, &c__0, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STBCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	stbcon_("1", "/", "N", &c__0, &c__0, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STBCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	stbcon_("1", "U", "/", &c__0, &c__0, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STBCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	stbcon_("1", "U", "N", &c_n1, &c__0, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STBCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	stbcon_("1", "U", "N", &c__0, &c_n1, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STBCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 7;
	stbcon_("1", "U", "N", &c__2, &c__1, a, &c__1, &rcond, w, iw, &info);
	chkxer_("STBCON", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);

/*        SLATBS */

	s_copy(srnamc_1.srnamt, "SLATBS", (ftnlen)6, (ftnlen)6);
	infoc_1.infot = 1;
	slatbs_("/", "N", "N", "N", &c__0, &c__0, a, &c__1, x, &scale, w, &
		info);
	chkxer_("SLATBS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 2;
	slatbs_("U", "/", "N", "N", &c__0, &c__0, a, &c__1, x, &scale, w, &
		info);
	chkxer_("SLATBS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 3;
	slatbs_("U", "N", "/", "N", &c__0, &c__0, a, &c__1, x, &scale, w, &
		info);
	chkxer_("SLATBS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 4;
	slatbs_("U", "N", "N", "/", &c__0, &c__0, a, &c__1, x, &scale, w, &
		info);
	chkxer_("SLATBS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 5;
	slatbs_("U", "N", "N", "N", &c_n1, &c__0, a, &c__1, x, &scale, w, &
		info);
	chkxer_("SLATBS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 6;
	slatbs_("U", "N", "N", "N", &c__1, &c_n1, a, &c__1, x, &scale, w, &
		info);
	chkxer_("SLATBS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
	infoc_1.infot = 8;
	slatbs_("U", "N", "N", "N", &c__2, &c__1, a, &c__1, x, &scale, w, &
		info);
	chkxer_("SLATBS", &infoc_1.infot, &infoc_1.nout, &infoc_1.lerr, &
		infoc_1.ok);
    }

/*     Print a summary line. */

    alaesm_(path, &infoc_1.ok, &infoc_1.nout);

    return 0;

/*     End of SERRTR */

} /* serrtr_ */