cunmbr_2.c

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/*  Contents: test routine for C interface to LAPACK
*   Author: Intel Corporation
*   Created in March, 2010
*
* Purpose
*
* cunmbr_2 is the test program for the C interface to LAPACK
* routine cunmbr
* 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_cunmbr( char *vect, char *side, char *trans,
                                 lapack_int *m, lapack_int *n, lapack_int *k,
                                 lapack_int *lda, lapack_int *ldc,
                                 lapack_int *lwork );
static void init_a( lapack_int size, lapack_complex_float *a );
static void init_tau( lapack_int size, lapack_complex_float *tau );
static void init_c( lapack_int size, lapack_complex_float *c );
static void init_work( lapack_int size, lapack_complex_float *work );
static int compare_cunmbr( lapack_complex_float *c, lapack_complex_float *c_i,
                           lapack_int info, lapack_int info_i, lapack_int ldc,
                           lapack_int n );

int main(void)
{
    /* Local scalars */
    char vect, vect_i;
    char side, side_i;
    char trans, trans_i;
    lapack_int m, m_i;
    lapack_int n, n_i;
    lapack_int k, k_i;
    lapack_int lda, lda_i;
    lapack_int lda_r;
    lapack_int ldc, ldc_i;
    lapack_int ldc_r;
    lapack_int lwork, lwork_i;
    lapack_int info, info_i;
    /* Declare scalars */
    lapack_int nq;
    lapack_int r;
    lapack_int i;
    int failed;

    /* Local arrays */
    lapack_complex_float *a = NULL, *a_i = NULL;
    lapack_complex_float *tau = NULL, *tau_i = NULL;
    lapack_complex_float *c = NULL, *c_i = NULL;
    lapack_complex_float *work = NULL, *work_i = NULL;
    lapack_complex_float *c_save = NULL;
    lapack_complex_float *a_r = NULL;
    lapack_complex_float *c_r = NULL;

    /* Iniitialize the scalar parameters */
    init_scalars_cunmbr( &vect, &side, &trans, &m, &n, &k, &lda, &ldc, &lwork );
    nq = LAPACKE_lsame( side, 'l' ) ? m : n;
    r = LAPACKE_lsame( vect, 'q' ) ? nq : MIN(nq,k);
    lda_r = MIN(nq,k)+2;
    ldc_r = n+2;
    vect_i = vect;
    side_i = side;
    trans_i = trans;
    m_i = m;
    n_i = n;
    k_i = k;
    lda_i = lda;
    ldc_i = ldc;
    lwork_i = lwork;

    /* Allocate memory for the LAPACK routine arrays */
    a = (lapack_complex_float *)
        LAPACKE_malloc( (lda*(MIN(nq,k))) * sizeof(lapack_complex_float) );
    tau = (lapack_complex_float *)
        LAPACKE_malloc( MIN(nq,k) * sizeof(lapack_complex_float) );
    c = (lapack_complex_float *)
        LAPACKE_malloc( ldc*n * sizeof(lapack_complex_float) );
    work = (lapack_complex_float *)
        LAPACKE_malloc( lwork * sizeof(lapack_complex_float) );

    /* Allocate memory for the C interface function arrays */
    a_i = (lapack_complex_float *)
        LAPACKE_malloc( (lda*(MIN(nq,k))) * sizeof(lapack_complex_float) );
    tau_i = (lapack_complex_float *)
        LAPACKE_malloc( MIN(nq,k) * sizeof(lapack_complex_float) );
    c_i = (lapack_complex_float *)
        LAPACKE_malloc( ldc*n * sizeof(lapack_complex_float) );
    work_i = (lapack_complex_float *)
        LAPACKE_malloc( lwork * sizeof(lapack_complex_float) );

    /* Allocate memory for the backup arrays */
    c_save = (lapack_complex_float *)
        LAPACKE_malloc( ldc*n * sizeof(lapack_complex_float) );

    /* Allocate memory for the row-major arrays */
    a_r = (lapack_complex_float *)
        LAPACKE_malloc( (r*(MIN(nq,k)+2)) * sizeof(lapack_complex_float) );
    c_r = (lapack_complex_float *)
        LAPACKE_malloc( m*(n+2) * sizeof(lapack_complex_float) );

    /* Initialize input arrays */
    init_a( lda*(MIN(nq,k)), a );
    init_tau( (MIN(nq,k)), tau );
    init_c( ldc*n, c );
    init_work( lwork, work );

    /* Backup the ouptut arrays */
    for( i = 0; i < ldc*n; i++ ) {
        c_save[i] = c[i];
    }

    /* Call the LAPACK routine */
    cunmbr_( &vect, &side, &trans, &m, &n, &k, a, &lda, tau, c, &ldc, work,
             &lwork, &info );

    /* Initialize input data, call the column-major middle-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*(MIN(nq,k)); i++ ) {
        a_i[i] = a[i];
    }
    for( i = 0; i < (MIN(nq,k)); i++ ) {
        tau_i[i] = tau[i];
    }
    for( i = 0; i < ldc*n; i++ ) {
        c_i[i] = c_save[i];
    }
    for( i = 0; i < lwork; i++ ) {
        work_i[i] = work[i];
    }
    info_i = LAPACKE_cunmbr_work( LAPACK_COL_MAJOR, vect_i, side_i, trans_i,
                                  m_i, n_i, k_i, a_i, lda_i, tau_i, c_i, ldc_i,
                                  work_i, lwork_i );

    failed = compare_cunmbr( c, c_i, info, info_i, ldc, n );
    if( failed == 0 ) {
        printf( "PASSED: column-major middle-level interface to cunmbr\n" );
    } else {
        printf( "FAILED: column-major middle-level interface to cunmbr\n" );
    }

    /* Initialize input data, call the column-major high-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*(MIN(nq,k)); i++ ) {
        a_i[i] = a[i];
    }
    for( i = 0; i < (MIN(nq,k)); i++ ) {
        tau_i[i] = tau[i];
    }
    for( i = 0; i < ldc*n; i++ ) {
        c_i[i] = c_save[i];
    }
    for( i = 0; i < lwork; i++ ) {
        work_i[i] = work[i];
    }
    info_i = LAPACKE_cunmbr( LAPACK_COL_MAJOR, vect_i, side_i, trans_i, m_i,
                             n_i, k_i, a_i, lda_i, tau_i, c_i, ldc_i );

    failed = compare_cunmbr( c, c_i, info, info_i, ldc, n );
    if( failed == 0 ) {
        printf( "PASSED: column-major high-level interface to cunmbr\n" );
    } else {
        printf( "FAILED: column-major high-level interface to cunmbr\n" );
    }

    /* Initialize input data, call the row-major middle-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*(MIN(nq,k)); i++ ) {
        a_i[i] = a[i];
    }
    for( i = 0; i < (MIN(nq,k)); i++ ) {
        tau_i[i] = tau[i];
    }
    for( i = 0; i < ldc*n; i++ ) {
        c_i[i] = c_save[i];
    }
    for( i = 0; i < lwork; i++ ) {
        work_i[i] = work[i];
    }

    LAPACKE_cge_trans( LAPACK_COL_MAJOR, r, MIN(nq, k ), a_i, lda, a_r, MIN(nq,
                       k)+2);
    LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, c_i, ldc, c_r, n+2 );
    info_i = LAPACKE_cunmbr_work( LAPACK_ROW_MAJOR, vect_i, side_i, trans_i,
                                  m_i, n_i, k_i, a_r, lda_r, tau_i, c_r, ldc_r,
                                  work_i, lwork_i );

    LAPACKE_cge_trans( LAPACK_ROW_MAJOR, m, n, c_r, n+2, c_i, ldc );

    failed = compare_cunmbr( c, c_i, info, info_i, ldc, n );
    if( failed == 0 ) {
        printf( "PASSED: row-major middle-level interface to cunmbr\n" );
    } else {
        printf( "FAILED: row-major middle-level interface to cunmbr\n" );
    }

    /* Initialize input data, call the row-major high-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*(MIN(nq,k)); i++ ) {
        a_i[i] = a[i];
    }
    for( i = 0; i < (MIN(nq,k)); i++ ) {
        tau_i[i] = tau[i];
    }
    for( i = 0; i < ldc*n; i++ ) {
        c_i[i] = c_save[i];
    }
    for( i = 0; i < lwork; i++ ) {
        work_i[i] = work[i];
    }

    /* Init row_major arrays */
    LAPACKE_cge_trans( LAPACK_COL_MAJOR, r, MIN(nq, k ), a_i, lda, a_r, MIN(nq,
                       k)+2);
    LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, c_i, ldc, c_r, n+2 );
    info_i = LAPACKE_cunmbr( LAPACK_ROW_MAJOR, vect_i, side_i, trans_i, m_i,
                             n_i, k_i, a_r, lda_r, tau_i, c_r, ldc_r );

    LAPACKE_cge_trans( LAPACK_ROW_MAJOR, m, n, c_r, n+2, c_i, ldc );

    failed = compare_cunmbr( c, c_i, info, info_i, ldc, n );
    if( failed == 0 ) {
        printf( "PASSED: row-major high-level interface to cunmbr\n" );
    } else {
        printf( "FAILED: row-major high-level interface to cunmbr\n" );
    }

    /* Release memory */
    if( a != NULL ) {
        LAPACKE_free( a );
    }
    if( a_i != NULL ) {
        LAPACKE_free( a_i );
    }
    if( a_r != NULL ) {
        LAPACKE_free( a_r );
    }
    if( tau != NULL ) {
        LAPACKE_free( tau );
    }
    if( tau_i != NULL ) {
        LAPACKE_free( tau_i );
    }
    if( c != NULL ) {
        LAPACKE_free( c );
    }
    if( c_i != NULL ) {
        LAPACKE_free( c_i );
    }
    if( c_r != NULL ) {
        LAPACKE_free( c_r );
    }
    if( c_save != NULL ) {
        LAPACKE_free( c_save );
    }
    if( work != NULL ) {
        LAPACKE_free( work );
    }
    if( work_i != NULL ) {
        LAPACKE_free( work_i );
    }

    return 0;
}

/* Auxiliary function: cunmbr scalar parameters initialization */
static void init_scalars_cunmbr( char *vect, char *side, char *trans,
                                 lapack_int *m, lapack_int *n, lapack_int *k,
                                 lapack_int *lda, lapack_int *ldc,
                                 lapack_int *lwork )
{
    *vect = 'P';
    *side = 'L';
    *trans = 'C';
    *m = 3;
    *n = 4;
    *k = 3;
    *lda = 8;
    *ldc = 8;
    *lwork = 1024;

    return;
}

/* Auxiliary functions: cunmbr array parameters initialization */
static void init_a( lapack_int size, lapack_complex_float *a ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        a[i] = lapack_make_complex_float( 0.0f, 0.0f );
    }
    a[0] = lapack_make_complex_float( 2.761475801e+000, 0.000000000e+000 );
    a[8] = lapack_make_complex_float( -9.499514103e-001, 0.000000000e+000 );
    a[16] = lapack_make_complex_float( 7.651669532e-002, -2.179353982e-001 );
    a[1] = lapack_make_complex_float( -1.645794213e-001, -2.483377308e-001 );
    a[9] = lapack_make_complex_float( 1.629762888e+000, 0.000000000e+000 );
    a[17] = lapack_make_complex_float( -1.018280864e+000, 0.000000000e+000 );
    a[2] = lapack_make_complex_float( -2.072303614e-004, 1.368010789e-001 );
    a[10] = lapack_make_complex_float( 2.649169862e-001, -2.632617950e-001 );
    a[18] = lapack_make_complex_float( -1.327486753e+000, 0.000000000e+000 );
}
static void init_tau( lapack_int size, lapack_complex_float *tau ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        tau[i] = lapack_make_complex_float( 0.0f, 0.0f );
    }
    tau[0] = lapack_make_complex_float( 1.688534141e+000, 5.957157016e-001 );
    tau[1] = lapack_make_complex_float( 1.935088515e+000, 3.544141948e-001 );
    tau[2] = lapack_make_complex_float( 0.000000000e+000, 0.000000000e+000 );
}
static void init_c( lapack_int size, lapack_complex_float *c ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        c[i] = lapack_make_complex_float( 0.0f, 0.0f );
    }
    c[0] = lapack_make_complex_float( -1.258138418e-001, 1.617605835e-001 );
    c[8] = lapack_make_complex_float( -2.246674895e-001, 3.864280879e-001 );
    c[16] = lapack_make_complex_float( 3.459879458e-001, 2.156807780e-001 );
    c[24] = lapack_make_complex_float( -7.099492550e-001, -2.965611219e-001 );
    c[1] = lapack_make_complex_float( -1.163461953e-001, -6.379657388e-001 );
    c[9] = lapack_make_complex_float( -3.240494728e-001, 4.271534085e-001 );
    c[17] = lapack_make_complex_float( -1.995496750e-001, -5.008659363e-001 );
    c[25] = lapack_make_complex_float( -3.233429790e-002, -1.620414853e-002 );
    c[2] = lapack_make_complex_float( -4.606565833e-001, 1.090034544e-001 );
    c[10] = lapack_make_complex_float( 2.170982510e-001, -4.061889052e-001 );
    c[18] = lapack_make_complex_float( 2.733075619e-001, -6.106228232e-001 );
    c[26] = lapack_make_complex_float( -9.940487146e-002, -3.261196911e-001 );
}
static void init_work( lapack_int size, lapack_complex_float *work ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        work[i] = lapack_make_complex_float( 0.0f, 0.0f );
    }
}

/* Auxiliary function: C interface to cunmbr results check */
/* Return value: 0 - test is passed, non-zero - test is failed */
static int compare_cunmbr( lapack_complex_float *c, lapack_complex_float *c_i,
                           lapack_int info, lapack_int info_i, lapack_int ldc,
                           lapack_int n )
{
    lapack_int i;
    int failed = 0;
    for( i = 0; i < ldc*n; i++ ) {
        failed += compare_complex_floats(c[i],c_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;
}