#include "blaswrap.h" /* ddrvsp.f -- translated by f2c (version 20061008). You must link the resulting object file with libf2c: on Microsoft Windows system, link with libf2c.lib; on Linux or Unix systems, link with .../path/to/libf2c.a -lm or, if you install libf2c.a in a standard place, with -lf2c -lm -- in that order, at the end of the command line, as in cc *.o -lf2c -lm Source for libf2c is in /netlib/f2c/libf2c.zip, e.g., http://www.netlib.org/f2c/libf2c.zip */ #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__0 = 0; static integer c_n1 = -1; static integer c__1 = 1; static doublereal c_b59 = 0.; static integer c__2 = 2; /* Subroutine */ int ddrvsp_(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 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 integer i__, j, k, n, i1, i2, k1, in, kl, ku, nt, lda, npp; static char fact[1]; static integer ioff, mode, imat, info; static char path[3], dist[1], uplo[1], type__[1]; static integer nrun, ifact; extern /* Subroutine */ int dget04_(integer *, integer *, doublereal *, integer *, doublereal *, integer *, doublereal *, doublereal *); static integer nfail, iseed[4]; extern doublereal dget06_(doublereal *, doublereal *); static doublereal rcond; static integer nimat; extern /* Subroutine */ int dppt02_(char *, integer *, integer *, doublereal *, doublereal *, integer *, doublereal *, integer *, doublereal *, doublereal *), dspt01_(char *, integer *, doublereal *, doublereal *, integer *, doublereal *, integer *, doublereal *, doublereal *); static doublereal anorm; extern /* Subroutine */ int dppt05_(char *, integer *, integer *, doublereal *, doublereal *, integer *, doublereal *, integer *, doublereal *, integer *, doublereal *, doublereal *, doublereal *), dcopy_(integer *, doublereal *, integer *, doublereal *, integer *); static integer iuplo, izero, nerrs, lwork; extern /* Subroutine */ int dspsv_(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 *), alaerh_(char *, char *, integer *, integer *, char *, integer *, integer *, integer *, integer *, integer *, integer *, integer *, integer *, integer *); static doublereal rcondc; static char packit[1]; 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 *); extern doublereal dlansp_(char *, char *, integer *, doublereal *, doublereal *); extern /* Subroutine */ int 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 /* Subroutine */ int dsptrf_(char *, integer *, doublereal *, integer *, integer *), dsptri_(char *, integer *, doublereal *, integer *, doublereal *, integer *), derrvx_(char *, integer *); static doublereal result[6]; extern /* Subroutine */ int dspsvx_(char *, char *, integer *, integer *, doublereal *, doublereal *, integer *, doublereal *, integer *, doublereal *, integer *, doublereal *, doublereal *, doublereal *, doublereal *, integer *, integer *); /* Fortran I/O blocks */ static cilist io___41 = { 0, 0, 0, fmt_9999, 0 }; static cilist io___44 = { 0, 0, 0, fmt_9998, 0 }; /* -- LAPACK test routine (version 3.1) -- Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. November 2006 Purpose ======= DDRVSP tests the driver routines DSPSV 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+1)/2) AFAC (workspace) DOUBLE PRECISION array, dimension (NMAX*(NMAX+1)/2) AINV (workspace) DOUBLE PRECISION array, dimension (NMAX*(NMAX+1)/2) 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, "SP", (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; /* 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); npp = n * (n + 1) / 2; *(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) { if (iuplo == 1) { *(unsigned char *)uplo = 'U'; *(unsigned char *)packit = 'C'; } else { *(unsigned char *)uplo = 'L'; *(unsigned char *)packit = 'R'; } /* 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, packit, &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) * izero / 2; 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 += i__; /* L30: */ } } else { ioff = izero; i__3 = izero - 1; for (i__ = 1; i__ <= i__3; ++i__) { a[ioff] = 0.; ioff = ioff + n - i__; /* 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 += j; /* 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 = ioff + n - j; /* 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 DSPSVX. */ if (zerot) { if (ifact == 1) { goto L150; } rcondc = 0.; } else if (ifact == 1) { /* Compute the 1-norm of A. */ anorm = dlansp_("1", uplo, &n, &a[1], &rwork[1]); /* Factor the matrix A. */ dcopy_(&npp, &a[1], &c__1, &afac[1], &c__1); dsptrf_(uplo, &n, &afac[1], &iwork[1], &info); /* Compute inv(A) and take its norm. */ dcopy_(&npp, &afac[1], &c__1, &ainv[1], &c__1); dsptri_(uplo, &n, &ainv[1], &iwork[1], &work[1], & info); ainvnm = dlansp_("1", uplo, &n, &ainv[1], &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 DSPSV --- */ if (ifact == 2) { dcopy_(&npp, &a[1], &c__1, &afac[1], &c__1); dlacpy_("Full", &n, nrhs, &b[1], &lda, &x[1], &lda); /* Factor the matrix and solve the system using DSPSV. */ s_copy(srnamc_1.srnamt, "DSPSV ", (ftnlen)6, (ftnlen) 6); dspsv_(uplo, &n, nrhs, &afac[1], &iwork[1], &x[1], & lda, &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 DSPSV . */ if (info != k) { alaerh_(path, "DSPSV ", &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. */ dspt01_(uplo, &n, &a[1], &afac[1], &iwork[1], &ainv[1] , &lda, &rwork[1], result); /* Compute residual of the computed solution. */ dlacpy_("Full", &n, nrhs, &b[1], &lda, &work[1], &lda); dppt02_(uplo, &n, nrhs, &a[1], &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___41.ciunit = *nout; s_wsfe(&io___41); do_fio(&c__1, "DSPSV ", (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 DSPSVX --- */ if (ifact == 2 && npp > 0) { dlaset_("Full", &npp, &c__1, &c_b59, &c_b59, &afac[1], &npp); } dlaset_("Full", &n, nrhs, &c_b59, &c_b59, &x[1], &lda); /* Solve the system and compute the condition number and error bounds using DSPSVX. */ s_copy(srnamc_1.srnamt, "DSPSVX", (ftnlen)6, (ftnlen)6); dspsvx_(fact, uplo, &n, nrhs, &a[1], &afac[1], &iwork[1], &b[1], &lda, &x[1], &lda, &rcond, &rwork[1], & rwork[*nrhs + 1], &work[1], &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 DSPSVX. */ 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, "DSPSVX", &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. */ dspt01_(uplo, &n, &a[1], &afac[1], &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); dppt02_(uplo, &n, nrhs, &a[1], &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. */ dppt05_(uplo, &n, nrhs, &a[1], &b[1], &lda, &x[1], & lda, &xact[1], &lda, &rwork[1], &rwork[*nrhs + 1], &result[3]); } else { k1 = 6; } /* Compare RCOND from DSPSVX 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___44.ciunit = *nout; s_wsfe(&io___44); do_fio(&c__1, "DSPSVX", (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 DDRVSP */ } /* ddrvsp_ */