cgecon_1.c

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/*  Contents: test routine for C interface to LAPACK
*   Author: Intel Corporation
*   Created in March, 2010
*
* Purpose
*
* cgecon_1 is the test program for the C interface to LAPACK
* routine cgecon
* 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_cgecon( char *norm, lapack_int *n, lapack_int *lda,
                                 float *anorm );
static void init_a( lapack_int size, lapack_complex_float *a );
static void init_work( lapack_int size, lapack_complex_float *work );
static void init_rwork( lapack_int size, float *rwork );
static int compare_cgecon( float rcond, float rcond_i, lapack_int info,
                           lapack_int info_i );

int main(void)
{
    /* Local scalars */
    char norm, norm_i;
    lapack_int n, n_i;
    lapack_int lda, lda_i;
    lapack_int lda_r;
    float anorm, anorm_i;
    float rcond, rcond_i;
    lapack_int info, info_i;
    lapack_int i;
    int failed;

    /* Local arrays */
    lapack_complex_float *a = NULL, *a_i = NULL;
    lapack_complex_float *work = NULL, *work_i = NULL;
    float *rwork = NULL, *rwork_i = NULL;
    lapack_complex_float *a_r = NULL;

    /* Iniitialize the scalar parameters */
    init_scalars_cgecon( &norm, &n, &lda, &anorm );
    lda_r = n+2;
    norm_i = norm;
    n_i = n;
    lda_i = lda;
    anorm_i = anorm;

    /* Allocate memory for the LAPACK routine arrays */
    a = (lapack_complex_float *)
        LAPACKE_malloc( lda*n * sizeof(lapack_complex_float) );
    work = (lapack_complex_float *)
        LAPACKE_malloc( 2*n * sizeof(lapack_complex_float) );
    rwork = (float *)LAPACKE_malloc( 2*n * sizeof(float) );

    /* Allocate memory for the C interface function arrays */
    a_i = (lapack_complex_float *)
        LAPACKE_malloc( lda*n * sizeof(lapack_complex_float) );
    work_i = (lapack_complex_float *)
        LAPACKE_malloc( 2*n * sizeof(lapack_complex_float) );
    rwork_i = (float *)LAPACKE_malloc( 2*n * sizeof(float) );

    /* Allocate memory for the row-major arrays */
    a_r = (lapack_complex_float *)
        LAPACKE_malloc( n*(n+2) * sizeof(lapack_complex_float) );

    /* Initialize input arrays */
    init_a( lda*n, a );
    init_work( 2*n, work );
    init_rwork( 2*n, rwork );

    /* Call the LAPACK routine */
    cgecon_( &norm, &n, a, &lda, &anorm, &rcond, work, rwork, &info );

    /* Initialize input data, call the column-major middle-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*n; i++ ) {
        a_i[i] = a[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        work_i[i] = work[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        rwork_i[i] = rwork[i];
    }
    info_i = LAPACKE_cgecon_work( LAPACK_COL_MAJOR, norm_i, n_i, a_i, lda_i,
                                  anorm_i, &rcond_i, work_i, rwork_i );

    failed = compare_cgecon( rcond, rcond_i, info, info_i );
    if( failed == 0 ) {
        printf( "PASSED: column-major middle-level interface to cgecon\n" );
    } else {
        printf( "FAILED: column-major middle-level interface to cgecon\n" );
    }

    /* Initialize input data, call the column-major high-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*n; i++ ) {
        a_i[i] = a[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        work_i[i] = work[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        rwork_i[i] = rwork[i];
    }
    info_i = LAPACKE_cgecon( LAPACK_COL_MAJOR, norm_i, n_i, a_i, lda_i, anorm_i,
                             &rcond_i );

    failed = compare_cgecon( rcond, rcond_i, info, info_i );
    if( failed == 0 ) {
        printf( "PASSED: column-major high-level interface to cgecon\n" );
    } else {
        printf( "FAILED: column-major high-level interface to cgecon\n" );
    }

    /* Initialize input data, call the row-major middle-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*n; i++ ) {
        a_i[i] = a[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        work_i[i] = work[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        rwork_i[i] = rwork[i];
    }

    LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
    info_i = LAPACKE_cgecon_work( LAPACK_ROW_MAJOR, norm_i, n_i, a_r, lda_r,
                                  anorm_i, &rcond_i, work_i, rwork_i );

    failed = compare_cgecon( rcond, rcond_i, info, info_i );
    if( failed == 0 ) {
        printf( "PASSED: row-major middle-level interface to cgecon\n" );
    } else {
        printf( "FAILED: row-major middle-level interface to cgecon\n" );
    }

    /* Initialize input data, call the row-major high-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*n; i++ ) {
        a_i[i] = a[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        work_i[i] = work[i];
    }
    for( i = 0; i < 2*n; i++ ) {
        rwork_i[i] = rwork[i];
    }

    /* Init row_major arrays */
    LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
    info_i = LAPACKE_cgecon( LAPACK_ROW_MAJOR, norm_i, n_i, a_r, lda_r, anorm_i,
                             &rcond_i );

    failed = compare_cgecon( rcond, rcond_i, info, info_i );
    if( failed == 0 ) {
        printf( "PASSED: row-major high-level interface to cgecon\n" );
    } else {
        printf( "FAILED: row-major high-level interface to cgecon\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( 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: cgecon scalar parameters initialization */
static void init_scalars_cgecon( char *norm, lapack_int *n, lapack_int *lda,
                                 float *anorm )
{
    *norm = '1';
    *n = 4;
    *lda = 8;
    *anorm = 1.288382244e+001;

    return;
}

/* Auxiliary functions: cgecon 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( -3.289999962e+000, -2.390000105e+000 );
    a[8] = lapack_make_complex_float( -1.909999967e+000, 4.420000076e+000 );
    a[16] = lapack_make_complex_float( -1.400000006e-001, -1.350000024e+000 );
    a[24] = lapack_make_complex_float( 1.720000029e+000, 1.350000024e+000 );
    a[1] = lapack_make_complex_float( 2.376120239e-001, 2.559596300e-001 );
    a[9] = lapack_make_complex_float( 4.895180702e+000, -7.113622427e-001 );
    a[17] = lapack_make_complex_float( -4.622798264e-001, 1.696610570e+000 );
    a[25] = lapack_make_complex_float( 1.226852775e+000, 6.189731956e-001 );
    a[2] = lapack_make_complex_float( -1.019521058e-001, -7.010135055e-001 );
    a[10] = lapack_make_complex_float( -6.691496968e-001, 3.688699007e-001 );
    a[18] = lapack_make_complex_float( -5.141410828e+000, -1.129969597e+000 );
    a[26] = lapack_make_complex_float( 9.982581139e-001, 3.850151896e-001 );
    a[3] = lapack_make_complex_float( -5.358546376e-001, 2.707273066e-001 );
    a[11] = lapack_make_complex_float( -2.040217221e-001, 8.601181507e-001 );
    a[19] = lapack_make_complex_float( 8.233040571e-003, 1.210636795e-001 );
    a[27] = lapack_make_complex_float( 1.482392550e-001, -1.252242178e-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 );
    }
}
static void init_rwork( lapack_int size, float *rwork ) {
    lapack_int i;
    for( i = 0; i < size; i++ ) {
        rwork[i] = 0;
    }
}

/* Auxiliary function: C interface to cgecon results check */
/* Return value: 0 - test is passed, non-zero - test is failed */
static int compare_cgecon( float rcond, float rcond_i, lapack_int info,
                           lapack_int info_i )
{
    int failed = 0;
    failed += compare_floats(rcond,rcond_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;
}