zgbrfs_1.c

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/*  Contents: test routine for C interface to LAPACK
*   Author: Intel Corporation
*   Created in March, 2010
*
* Purpose
*
* zgbrfs_1 is the test program for the C interface to LAPACK
* routine zgbrfs
* The program doesn't require an input, the input data is hardcoded in the
* test program.
* The program tests the C interface in the four combinations:
*   1) column-major layout, middle-level interface
*   2) column-major layout, high-level interface
*   3) row-major layout, middle-level interface
*   4) row-major layout, high-level interface
* The output of the C interface function is compared to those obtained from
* the corresponiding LAPACK routine with the same input data, and the
* comparison diagnostics is then printed on the standard output having PASSED
* keyword if the test is passed, and FAILED keyword if the test isn't passed.
*****************************************************************************/
#include <stdio.h>
#include "lapacke.h"
#include "lapacke_utils.h"
#include "test_utils.h"

static void init_scalars_zgbrfs( char *trans, lapack_int *n, lapack_int *kl,
                                 lapack_int *ku, lapack_int *nrhs,
                                 lapack_int *ldab, lapack_int *ldafb,
                                 lapack_int *ldb, lapack_int *ldx );
static void init_ab( lapack_int size, lapack_complex_double *ab );
static void init_afb( lapack_int size, lapack_complex_double *afb );
static void init_ipiv( lapack_int size, lapack_int *ipiv );
static void init_b( lapack_int size, lapack_complex_double *b );
static void init_x( lapack_int size, lapack_complex_double *x );
static void init_ferr( lapack_int size, double *ferr );
static void init_berr( lapack_int size, double *berr );
static void init_work( lapack_int size, lapack_complex_double *work );
static void init_rwork( lapack_int size, double *rwork );
static int compare_zgbrfs( lapack_complex_double *x, lapack_complex_double *x_i,
                           double *ferr, double *ferr_i, double *berr,
                           double *berr_i, lapack_int info, lapack_int info_i,
                           lapack_int ldx, lapack_int nrhs );

int main(void)
{
    /* Local scalars */
    char trans, trans_i;
    lapack_int n, n_i;
    lapack_int kl, kl_i;
    lapack_int ku, ku_i;
    lapack_int nrhs, nrhs_i;
    lapack_int ldab, ldab_i;
    lapack_int ldab_r;
    lapack_int ldafb, ldafb_i;
    lapack_int ldafb_r;
    lapack_int ldb, ldb_i;
    lapack_int ldb_r;
    lapack_int ldx, ldx_i;
    lapack_int ldx_r;
    lapack_int info, info_i;
    lapack_int i;
    int failed;

    /* Local arrays */
    lapack_complex_double *ab = NULL, *ab_i = NULL;
    lapack_complex_double *afb = NULL, *afb_i = NULL;
    lapack_int *ipiv = NULL, *ipiv_i = NULL;
    lapack_complex_double *b = NULL, *b_i = NULL;
    lapack_complex_double *x = NULL, *x_i = NULL;
    double *ferr = NULL, *ferr_i = NULL;
    double *berr = NULL, *berr_i = NULL;
    lapack_complex_double *work = NULL, *work_i = NULL;
    double *rwork = NULL, *rwork_i = NULL;
    lapack_complex_double *x_save = NULL;
    double *ferr_save = NULL;
    double *berr_save = NULL;
    lapack_complex_double *ab_r = NULL;
    lapack_complex_double *afb_r = NULL;
    lapack_complex_double *b_r = NULL;
    lapack_complex_double *x_r = NULL;

    /* Iniitialize the scalar parameters */
    init_scalars_zgbrfs( &trans, &n, &kl, &ku, &nrhs, &ldab, &ldafb, &ldb,
                         &ldx );
    ldab_r = n+2;
    ldafb_r = n+2;
    ldb_r = nrhs+2;
    ldx_r = nrhs+2;
    trans_i = trans;
    n_i = n;
    kl_i = kl;
    ku_i = ku;
    nrhs_i = nrhs;
    ldab_i = ldab;
    ldafb_i = ldafb;
    ldb_i = ldb;
    ldx_i = ldx;

    /* Allocate memory for the LAPACK routine arrays */
    ab = (lapack_complex_double *)
        LAPACKE_malloc( ldab*n * sizeof(lapack_complex_double) );
    afb = (lapack_complex_double *)
        LAPACKE_malloc( ldafb*n * sizeof(lapack_complex_double) );
    ipiv = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
    b = (lapack_complex_double *)
        LAPACKE_malloc( ldb*nrhs * sizeof(lapack_complex_double) );
    x = (lapack_complex_double *)
        LAPACKE_malloc( ldx*nrhs * sizeof(lapack_complex_double) );
    ferr = (double *)LAPACKE_malloc( nrhs * sizeof(double) );
    berr = (double *)LAPACKE_malloc( nrhs * sizeof(double) );
    work = (lapack_complex_double *)
        LAPACKE_malloc( 2*n * sizeof(lapack_complex_double) );
    rwork = (double *)LAPACKE_malloc( n * sizeof(double) );

    /* Allocate memory for the C interface function arrays */
    ab_i = (lapack_complex_double *)
        LAPACKE_malloc( ldab*n * sizeof(lapack_complex_double) );
    afb_i = (lapack_complex_double *)
        LAPACKE_malloc( ldafb*n * sizeof(lapack_complex_double) );
    ipiv_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
    b_i = (lapack_complex_double *)
        LAPACKE_malloc( ldb*nrhs * sizeof(lapack_complex_double) );
    x_i = (lapack_complex_double *)
        LAPACKE_malloc( ldx*nrhs * sizeof(lapack_complex_double) );
    ferr_i = (double *)LAPACKE_malloc( nrhs * sizeof(double) );
    berr_i = (double *)LAPACKE_malloc( nrhs * sizeof(double) );
    work_i = (lapack_complex_double *)
        LAPACKE_malloc( 2*n * sizeof(lapack_complex_double) );
    rwork_i = (double *)LAPACKE_malloc( n * sizeof(double) );

    /* Allocate memory for the backup arrays */
    x_save = (lapack_complex_double *)
        LAPACKE_malloc( ldx*nrhs * sizeof(lapack_complex_double) );
    ferr_save = (double *)LAPACKE_malloc( nrhs * sizeof(double) );
    berr_save = (double *)LAPACKE_malloc( nrhs * sizeof(double) );

    /* Allocate memory for the row-major arrays */
    ab_r = (lapack_complex_double *)
        LAPACKE_malloc( (kl+ku+1)*(n+2) * sizeof(lapack_complex_double) );
    afb_r = (lapack_complex_double *)
        LAPACKE_malloc( ((2*kl+ku+1)*(n+2)) * sizeof(lapack_complex_double) );
    b_r = (lapack_complex_double *)
        LAPACKE_malloc( n*(nrhs+2) * sizeof(lapack_complex_double) );
    x_r = (lapack_complex_double *)
        LAPACKE_malloc( n*(nrhs+2) * sizeof(lapack_complex_double) );

    /* Initialize input arrays */
    init_ab( ldab*n, ab );
    init_afb( ldafb*n, afb );
    init_ipiv( n, ipiv );
    init_b( ldb*nrhs, b );
    init_x( ldx*nrhs, x );
    init_ferr( nrhs, ferr );
    init_berr( nrhs, berr );
    init_work( 2*n, work );
    init_rwork( n, rwork );

    /* Backup the ouptut arrays */
    for( i = 0; i < ldx*nrhs; i++ ) {
        x_save[i] = x[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        ferr_save[i] = ferr[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        berr_save[i] = berr[i];
    }

    /* Call the LAPACK routine */
    zgbrfs_( &trans, &n, &kl, &ku, &nrhs, ab, &ldab, afb, &ldafb, ipiv, b, &ldb,
             x, &ldx, ferr, berr, work, rwork, &info );

    /* Initialize input data, call the column-major middle-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < ldab*n; i++ ) {
        ab_i[i] = ab[i];
    }
    for( i = 0; i < ldafb*n; i++ ) {
        afb_i[i] = afb[i];
    }
    for( i = 0; i < n; i++ ) {
        ipiv_i[i] = ipiv[i];
    }
    for( i = 0; i < ldb*nrhs; i++ ) {
        b_i[i] = b[i];
    }
    for( i = 0; i < ldx*nrhs; i++ ) {
        x_i[i] = x_save[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        ferr_i[i] = ferr_save[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        berr_i[i] = berr_save[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        work_i[i] = work[i];
    }
    for( i = 0; i < n; i++ ) {
        rwork_i[i] = rwork[i];
    }
    info_i = LAPACKE_zgbrfs_work( LAPACK_COL_MAJOR, trans_i, n_i, kl_i, ku_i,
                                  nrhs_i, ab_i, ldab_i, afb_i, ldafb_i, ipiv_i,
                                  b_i, ldb_i, x_i, ldx_i, ferr_i, berr_i,
                                  work_i, rwork_i );

    failed = compare_zgbrfs( x, x_i, ferr, ferr_i, berr, berr_i, info, info_i,
                             ldx, nrhs );
    if( failed == 0 ) {
        printf( "PASSED: column-major middle-level interface to zgbrfs\n" );
    } else {
        printf( "FAILED: column-major middle-level interface to zgbrfs\n" );
    }

    /* Initialize input data, call the column-major high-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < ldab*n; i++ ) {
        ab_i[i] = ab[i];
    }
    for( i = 0; i < ldafb*n; i++ ) {
        afb_i[i] = afb[i];
    }
    for( i = 0; i < n; i++ ) {
        ipiv_i[i] = ipiv[i];
    }
    for( i = 0; i < ldb*nrhs; i++ ) {
        b_i[i] = b[i];
    }
    for( i = 0; i < ldx*nrhs; i++ ) {
        x_i[i] = x_save[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        ferr_i[i] = ferr_save[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        berr_i[i] = berr_save[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        work_i[i] = work[i];
    }
    for( i = 0; i < n; i++ ) {
        rwork_i[i] = rwork[i];
    }
    info_i = LAPACKE_zgbrfs( LAPACK_COL_MAJOR, trans_i, n_i, kl_i, ku_i, nrhs_i,
                             ab_i, ldab_i, afb_i, ldafb_i, ipiv_i, b_i, ldb_i,
                             x_i, ldx_i, ferr_i, berr_i );

    failed = compare_zgbrfs( x, x_i, ferr, ferr_i, berr, berr_i, info, info_i,
                             ldx, nrhs );
    if( failed == 0 ) {
        printf( "PASSED: column-major high-level interface to zgbrfs\n" );
    } else {
        printf( "FAILED: column-major high-level interface to zgbrfs\n" );
    }

    /* Initialize input data, call the row-major middle-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < ldab*n; i++ ) {
        ab_i[i] = ab[i];
    }
    for( i = 0; i < ldafb*n; i++ ) {
        afb_i[i] = afb[i];
    }
    for( i = 0; i < n; i++ ) {
        ipiv_i[i] = ipiv[i];
    }
    for( i = 0; i < ldb*nrhs; i++ ) {
        b_i[i] = b[i];
    }
    for( i = 0; i < ldx*nrhs; i++ ) {
        x_i[i] = x_save[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        ferr_i[i] = ferr_save[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        berr_i[i] = berr_save[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        work_i[i] = work[i];
    }
    for( i = 0; i < n; i++ ) {
        rwork_i[i] = rwork[i];
    }

    LAPACKE_zge_trans( LAPACK_COL_MAJOR, kl+ku+1, n, ab_i, ldab, ab_r, n+2 );
    LAPACKE_zge_trans( LAPACK_COL_MAJOR, 2*kl+ku+1, n, afb_i, ldafb, afb_r,
                       n+2 );
    LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_i, ldb, b_r, nrhs+2 );
    LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_i, ldx, x_r, nrhs+2 );
    info_i = LAPACKE_zgbrfs_work( LAPACK_ROW_MAJOR, trans_i, n_i, kl_i, ku_i,
                                  nrhs_i, ab_r, ldab_r, afb_r, ldafb_r, ipiv_i,
                                  b_r, ldb_r, x_r, ldx_r, ferr_i, berr_i,
                                  work_i, rwork_i );

    LAPACKE_zge_trans( LAPACK_ROW_MAJOR, n, nrhs, x_r, nrhs+2, x_i, ldx );

    failed = compare_zgbrfs( x, x_i, ferr, ferr_i, berr, berr_i, info, info_i,
                             ldx, nrhs );
    if( failed == 0 ) {
        printf( "PASSED: row-major middle-level interface to zgbrfs\n" );
    } else {
        printf( "FAILED: row-major middle-level interface to zgbrfs\n" );
    }

    /* Initialize input data, call the row-major high-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < ldab*n; i++ ) {
        ab_i[i] = ab[i];
    }
    for( i = 0; i < ldafb*n; i++ ) {
        afb_i[i] = afb[i];
    }
    for( i = 0; i < n; i++ ) {
        ipiv_i[i] = ipiv[i];
    }
    for( i = 0; i < ldb*nrhs; i++ ) {
        b_i[i] = b[i];
    }
    for( i = 0; i < ldx*nrhs; i++ ) {
        x_i[i] = x_save[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        ferr_i[i] = ferr_save[i];
    }
    for( i = 0; i < nrhs; i++ ) {
        berr_i[i] = berr_save[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        work_i[i] = work[i];
    }
    for( i = 0; i < n; i++ ) {
        rwork_i[i] = rwork[i];
    }

    /* Init row_major arrays */
    LAPACKE_zge_trans( LAPACK_COL_MAJOR, kl+ku+1, n, ab_i, ldab, ab_r, n+2 );
    LAPACKE_zge_trans( LAPACK_COL_MAJOR, 2*kl+ku+1, n, afb_i, ldafb, afb_r,
                       n+2 );
    LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_i, ldb, b_r, nrhs+2 );
    LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_i, ldx, x_r, nrhs+2 );
    info_i = LAPACKE_zgbrfs( LAPACK_ROW_MAJOR, trans_i, n_i, kl_i, ku_i, nrhs_i,
                             ab_r, ldab_r, afb_r, ldafb_r, ipiv_i, b_r, ldb_r,
                             x_r, ldx_r, ferr_i, berr_i );

    LAPACKE_zge_trans( LAPACK_ROW_MAJOR, n, nrhs, x_r, nrhs+2, x_i, ldx );

    failed = compare_zgbrfs( x, x_i, ferr, ferr_i, berr, berr_i, info, info_i,
                             ldx, nrhs );
    if( failed == 0 ) {
        printf( "PASSED: row-major high-level interface to zgbrfs\n" );
    } else {
        printf( "FAILED: row-major high-level interface to zgbrfs\n" );
    }

    /* Release memory */
    if( ab != NULL ) {
        LAPACKE_free( ab );
    }
    if( ab_i != NULL ) {
        LAPACKE_free( ab_i );
    }
    if( ab_r != NULL ) {
        LAPACKE_free( ab_r );
    }
    if( afb != NULL ) {
        LAPACKE_free( afb );
    }
    if( afb_i != NULL ) {
        LAPACKE_free( afb_i );
    }
    if( afb_r != NULL ) {
        LAPACKE_free( afb_r );
    }
    if( ipiv != NULL ) {
        LAPACKE_free( ipiv );
    }
    if( ipiv_i != NULL ) {
        LAPACKE_free( ipiv_i );
    }
    if( b != NULL ) {
        LAPACKE_free( b );
    }
    if( b_i != NULL ) {
        LAPACKE_free( b_i );
    }
    if( b_r != NULL ) {
        LAPACKE_free( b_r );
    }
    if( x != NULL ) {
        LAPACKE_free( x );
    }
    if( x_i != NULL ) {
        LAPACKE_free( x_i );
    }
    if( x_r != NULL ) {
        LAPACKE_free( x_r );
    }
    if( x_save != NULL ) {
        LAPACKE_free( x_save );
    }
    if( ferr != NULL ) {
        LAPACKE_free( ferr );
    }
    if( ferr_i != NULL ) {
        LAPACKE_free( ferr_i );
    }
    if( ferr_save != NULL ) {
        LAPACKE_free( ferr_save );
    }
    if( berr != NULL ) {
        LAPACKE_free( berr );
    }
    if( berr_i != NULL ) {
        LAPACKE_free( berr_i );
    }
    if( berr_save != NULL ) {
        LAPACKE_free( berr_save );
    }
    if( work != NULL ) {
        LAPACKE_free( work );
    }
    if( work_i != NULL ) {
        LAPACKE_free( work_i );
    }
    if( rwork != NULL ) {
        LAPACKE_free( rwork );
    }
    if( rwork_i != NULL ) {
        LAPACKE_free( rwork_i );
    }

    return 0;
}

/* Auxiliary function: zgbrfs scalar parameters initialization */
static void init_scalars_zgbrfs( char *trans, lapack_int *n, lapack_int *kl,
                                 lapack_int *ku, lapack_int *nrhs,
                                 lapack_int *ldab, lapack_int *ldafb,
                                 lapack_int *ldb, lapack_int *ldx )
{
    *trans = 'N';
    *n = 4;
    *kl = 1;
    *ku = 2;
    *nrhs = 2;
    *ldab = 17;
    *ldafb = 25;
    *ldb = 8;
    *ldx = 8;

    return;
}

/* Auxiliary functions: zgbrfs array parameters initialization */
static void init_ab( lapack_int size, lapack_complex_double *ab ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        ab[i] = lapack_make_complex_double( 0.0, 0.0 );
    }
    ab[0] = lapack_make_complex_double( 0.00000000000000000e+000,
                                        0.00000000000000000e+000 );
    ab[17] = lapack_make_complex_double( 0.00000000000000000e+000,
                                         0.00000000000000000e+000 );
    ab[34] = lapack_make_complex_double( 9.69999999999999970e-001,
                                         -2.83999999999999990e+000 );
    ab[51] = lapack_make_complex_double( 5.89999999999999970e-001,
                                         -4.79999999999999980e-001 );
    ab[1] = lapack_make_complex_double( 0.00000000000000000e+000,
                                        0.00000000000000000e+000 );
    ab[18] = lapack_make_complex_double( -2.04999999999999980e+000,
                                         -8.49999999999999980e-001 );
    ab[35] = lapack_make_complex_double( -3.99000000000000020e+000,
                                         4.00999999999999980e+000 );
    ab[52] = lapack_make_complex_double( 3.33000000000000010e+000,
                                         -1.04000000000000000e+000 );
    ab[2] = lapack_make_complex_double( -1.64999999999999990e+000,
                                        2.25999999999999980e+000 );
    ab[19] = lapack_make_complex_double( -1.48000000000000000e+000,
                                         -1.75000000000000000e+000 );
    ab[36] = lapack_make_complex_double( -1.06000000000000010e+000,
                                         1.93999999999999990e+000 );
    ab[53] = lapack_make_complex_double( -4.60000000000000020e-001,
                                         -1.72000000000000000e+000 );
    ab[3] = lapack_make_complex_double( 0.00000000000000000e+000,
                                        6.29999999999999980e+000 );
    ab[20] = lapack_make_complex_double( -7.70000000000000020e-001,
                                         2.83000000000000010e+000 );
    ab[37] = lapack_make_complex_double( 4.48000000000000040e+000,
                                         -1.09000000000000010e+000 );
    ab[54] = lapack_make_complex_double( 0.00000000000000000e+000,
                                         0.00000000000000000e+000 );
}
static void init_afb( lapack_int size, lapack_complex_double *afb ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        afb[i] = lapack_make_complex_double( 0.0, 0.0 );
    }
    afb[0] = lapack_make_complex_double( 0.00000000000000000e+000,
                                         0.00000000000000000e+000 );
    afb[25] = lapack_make_complex_double( 0.00000000000000000e+000,
                                          0.00000000000000000e+000 );
    afb[50] = lapack_make_complex_double( 0.00000000000000000e+000,
                                          0.00000000000000000e+000 );
    afb[75] = lapack_make_complex_double( 5.89999999999999970e-001,
                                          -4.79999999999999980e-001 );
    afb[1] = lapack_make_complex_double( 0.00000000000000000e+000,
                                         0.00000000000000000e+000 );
    afb[26] = lapack_make_complex_double( 0.00000000000000000e+000,
                                          0.00000000000000000e+000 );
    afb[51] = lapack_make_complex_double( -3.99000000000000020e+000,
                                          4.00999999999999980e+000 );
    afb[76] = lapack_make_complex_double( 3.33000000000000010e+000,
                                          -1.04000000000000000e+000 );
    afb[2] = lapack_make_complex_double( 0.00000000000000000e+000,
                                         0.00000000000000000e+000 );
    afb[27] = lapack_make_complex_double( -1.48000000000000000e+000,
                                          -1.75000000000000000e+000 );
    afb[52] = lapack_make_complex_double( -1.06000000000000010e+000,
                                          1.93999999999999990e+000 );
    afb[77] = lapack_make_complex_double( -1.76920938160968100e+000,
                                          -1.85874728194578730e+000 );
    afb[3] = lapack_make_complex_double( 0.00000000000000000e+000,
                                         6.29999999999999980e+000 );
    afb[28] = lapack_make_complex_double( -7.70000000000000020e-001,
                                          2.83000000000000010e+000 );
    afb[53] = lapack_make_complex_double( 4.93026694117547140e+000,
                                          -3.00856374062719210e+000 );
    afb[78] = lapack_make_complex_double( 4.33774926590159760e-001,
                                          1.23252818156083470e-001 );
    afb[4] = lapack_make_complex_double( 3.58730158730158680e-001,
                                         2.61904761904761860e-001 );
    afb[29] = lapack_make_complex_double( 2.31426072874374280e-001,
                                          6.35764884204745640e-001 );
    afb[54] = lapack_make_complex_double( 7.60422661963551130e-001,
                                          2.42944258926713260e-001 );
    afb[79] = lapack_make_complex_double( 0.00000000000000000e+000,
                                          0.00000000000000000e+000 );
}
static void init_ipiv( lapack_int size, lapack_int *ipiv ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        ipiv[i] = 0;
    }
    ipiv[0] = 2;
    ipiv[1] = 3;
    ipiv[2] = 3;
    ipiv[3] = 4;
}
static void init_b( lapack_int size, lapack_complex_double *b ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        b[i] = lapack_make_complex_double( 0.0, 0.0 );
    }
    b[0] = lapack_make_complex_double( -1.06000000000000010e+000,
                                       2.15000000000000000e+001 );
    b[8] = lapack_make_complex_double( 1.28500000000000000e+001,
                                       2.83999999999999990e+000 );
    b[1] = lapack_make_complex_double( -2.27199999999999990e+001,
                                       -5.38999999999999990e+001 );
    b[9] = lapack_make_complex_double( -7.02199999999999990e+001,
                                       2.15700000000000000e+001 );
    b[2] = lapack_make_complex_double( 2.82399999999999980e+001,
                                       -3.86000000000000010e+001 );
    b[10] = lapack_make_complex_double( -2.07300000000000000e+001,
                                        -1.23000000000000000e+000 );
    b[3] = lapack_make_complex_double( -3.45600000000000020e+001,
                                       1.67300000000000000e+001 );
    b[11] = lapack_make_complex_double( 2.60100000000000020e+001,
                                        3.19699999999999990e+001 );
}
static void init_x( lapack_int size, lapack_complex_double *x ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        x[i] = lapack_make_complex_double( 0.0, 0.0 );
    }
    x[0] = lapack_make_complex_double( -3.00000000000000670e+000,
                                       1.99999999999999800e+000 );
    x[8] = lapack_make_complex_double( 9.99999999999996230e-001,
                                       5.99999999999999640e+000 );
    x[1] = lapack_make_complex_double( 9.99999999999999560e-001,
                                       -7.00000000000000800e+000 );
    x[9] = lapack_make_complex_double( -6.99999999999999820e+000,
                                       -4.00000000000000620e+000 );
    x[2] = lapack_make_complex_double( -4.99999999999999730e+000,
                                       3.99999999999999560e+000 );
    x[10] = lapack_make_complex_double( 3.00000000000000220e+000,
                                        4.99999999999999640e+000 );
    x[3] = lapack_make_complex_double( 5.99999999999999200e+000,
                                       -8.00000000000000710e+000 );
    x[11] = lapack_make_complex_double( -8.00000000000000530e+000,
                                        1.99999999999999380e+000 );
}
static void init_ferr( lapack_int size, double *ferr ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        ferr[i] = 0;
    }
}
static void init_berr( lapack_int size, double *berr ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        berr[i] = 0;
    }
}
static void init_work( lapack_int size, lapack_complex_double *work ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        work[i] = lapack_make_complex_double( 0.0, 0.0 );
    }
}
static void init_rwork( lapack_int size, double *rwork ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        rwork[i] = 0;
    }
}

/* Auxiliary function: C interface to zgbrfs results check */
/* Return value: 0 - test is passed, non-zero - test is failed */
static int compare_zgbrfs( lapack_complex_double *x, lapack_complex_double *x_i,
                           double *ferr, double *ferr_i, double *berr,
                           double *berr_i, lapack_int info, lapack_int info_i,
                           lapack_int ldx, lapack_int nrhs )
{
    lapack_int i;
    int failed = 0;
    for( i = 0; i < ldx*nrhs; i++ ) {
        failed += compare_complex_doubles(x[i],x_i[i]);
    }
    for( i = 0; i < nrhs; i++ ) {
        failed += compare_doubles(ferr[i],ferr_i[i]);
    }
    for( i = 0; i < nrhs; i++ ) {
        failed += compare_doubles(berr[i],berr_i[i]);
    }
    failed += (info == info_i) ? 0 : 1;
    if( info != 0 || info_i != 0 ) {
        printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
    }

    return failed;
}