ztbcon_1.c
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00002   Copyright (c) 2010, Intel Corp.
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00029 /*  Contents: test routine for C interface to LAPACK
00030 *   Author: Intel Corporation
00031 *   Created in March, 2010
00032 *
00033 * Purpose
00034 *
00035 * ztbcon_1 is the test program for the C interface to LAPACK
00036 * routine ztbcon
00037 * The program doesn't require an input, the input data is hardcoded in the
00038 * test program.
00039 * The program tests the C interface in the four combinations:
00040 *   1) column-major layout, middle-level interface
00041 *   2) column-major layout, high-level interface
00042 *   3) row-major layout, middle-level interface
00043 *   4) row-major layout, high-level interface
00044 * The output of the C interface function is compared to those obtained from
00045 * the corresponiding LAPACK routine with the same input data, and the
00046 * comparison diagnostics is then printed on the standard output having PASSED
00047 * keyword if the test is passed, and FAILED keyword if the test isn't passed.
00048 *****************************************************************************/
00049 #include <stdio.h>
00050 #include "lapacke.h"
00051 #include "lapacke_utils.h"
00052 #include "test_utils.h"
00053 
00054 static void init_scalars_ztbcon( char *norm, char *uplo, char *diag,
00055                                  lapack_int *n, lapack_int *kd,
00056                                  lapack_int *ldab );
00057 static void init_ab( lapack_int size, lapack_complex_double *ab );
00058 static void init_work( lapack_int size, lapack_complex_double *work );
00059 static void init_rwork( lapack_int size, double *rwork );
00060 static int compare_ztbcon( double rcond, double rcond_i, lapack_int info,
00061                            lapack_int info_i );
00062 
00063 int main(void)
00064 {
00065     /* Local scalars */
00066     char norm, norm_i;
00067     char uplo, uplo_i;
00068     char diag, diag_i;
00069     lapack_int n, n_i;
00070     lapack_int kd, kd_i;
00071     lapack_int ldab, ldab_i;
00072     lapack_int ldab_r;
00073     double rcond, rcond_i;
00074     lapack_int info, info_i;
00075     lapack_int i;
00076     int failed;
00077 
00078     /* Local arrays */
00079     lapack_complex_double *ab = NULL, *ab_i = NULL;
00080     lapack_complex_double *work = NULL, *work_i = NULL;
00081     double *rwork = NULL, *rwork_i = NULL;
00082     lapack_complex_double *ab_r = NULL;
00083 
00084     /* Iniitialize the scalar parameters */
00085     init_scalars_ztbcon( &norm, &uplo, &diag, &n, &kd, &ldab );
00086     ldab_r = n+2;
00087     norm_i = norm;
00088     uplo_i = uplo;
00089     diag_i = diag;
00090     n_i = n;
00091     kd_i = kd;
00092     ldab_i = ldab;
00093 
00094     /* Allocate memory for the LAPACK routine arrays */
00095     ab = (lapack_complex_double *)
00096         LAPACKE_malloc( ldab*n * sizeof(lapack_complex_double) );
00097     work = (lapack_complex_double *)
00098         LAPACKE_malloc( 2*n * sizeof(lapack_complex_double) );
00099     rwork = (double *)LAPACKE_malloc( n * sizeof(double) );
00100 
00101     /* Allocate memory for the C interface function arrays */
00102     ab_i = (lapack_complex_double *)
00103         LAPACKE_malloc( ldab*n * sizeof(lapack_complex_double) );
00104     work_i = (lapack_complex_double *)
00105         LAPACKE_malloc( 2*n * sizeof(lapack_complex_double) );
00106     rwork_i = (double *)LAPACKE_malloc( n * sizeof(double) );
00107 
00108     /* Allocate memory for the row-major arrays */
00109     ab_r = (lapack_complex_double *)
00110         LAPACKE_malloc( (kd+1)*(n+2) * sizeof(lapack_complex_double) );
00111 
00112     /* Initialize input arrays */
00113     init_ab( ldab*n, ab );
00114     init_work( 2*n, work );
00115     init_rwork( n, rwork );
00116 
00117     /* Call the LAPACK routine */
00118     ztbcon_( &norm, &uplo, &diag, &n, &kd, ab, &ldab, &rcond, work, rwork,
00119              &info );
00120 
00121     /* Initialize input data, call the column-major middle-level
00122      * interface to LAPACK routine and check the results */
00123     for( i = 0; i < ldab*n; i++ ) {
00124         ab_i[i] = ab[i];
00125     }
00126     for( i = 0; i < 2*n; i++ ) {
00127         work_i[i] = work[i];
00128     }
00129     for( i = 0; i < n; i++ ) {
00130         rwork_i[i] = rwork[i];
00131     }
00132     info_i = LAPACKE_ztbcon_work( LAPACK_COL_MAJOR, norm_i, uplo_i, diag_i, n_i,
00133                                   kd_i, ab_i, ldab_i, &rcond_i, work_i,
00134                                   rwork_i );
00135 
00136     failed = compare_ztbcon( rcond, rcond_i, info, info_i );
00137     if( failed == 0 ) {
00138         printf( "PASSED: column-major middle-level interface to ztbcon\n" );
00139     } else {
00140         printf( "FAILED: column-major middle-level interface to ztbcon\n" );
00141     }
00142 
00143     /* Initialize input data, call the column-major high-level
00144      * interface to LAPACK routine and check the results */
00145     for( i = 0; i < ldab*n; i++ ) {
00146         ab_i[i] = ab[i];
00147     }
00148     for( i = 0; i < 2*n; i++ ) {
00149         work_i[i] = work[i];
00150     }
00151     for( i = 0; i < n; i++ ) {
00152         rwork_i[i] = rwork[i];
00153     }
00154     info_i = LAPACKE_ztbcon( LAPACK_COL_MAJOR, norm_i, uplo_i, diag_i, n_i,
00155                              kd_i, ab_i, ldab_i, &rcond_i );
00156 
00157     failed = compare_ztbcon( rcond, rcond_i, info, info_i );
00158     if( failed == 0 ) {
00159         printf( "PASSED: column-major high-level interface to ztbcon\n" );
00160     } else {
00161         printf( "FAILED: column-major high-level interface to ztbcon\n" );
00162     }
00163 
00164     /* Initialize input data, call the row-major middle-level
00165      * interface to LAPACK routine and check the results */
00166     for( i = 0; i < ldab*n; i++ ) {
00167         ab_i[i] = ab[i];
00168     }
00169     for( i = 0; i < 2*n; i++ ) {
00170         work_i[i] = work[i];
00171     }
00172     for( i = 0; i < n; i++ ) {
00173         rwork_i[i] = rwork[i];
00174     }
00175 
00176     LAPACKE_zge_trans( LAPACK_COL_MAJOR, kd+1, n, ab_i, ldab, ab_r, n+2 );
00177     info_i = LAPACKE_ztbcon_work( LAPACK_ROW_MAJOR, norm_i, uplo_i, diag_i, n_i,
00178                                   kd_i, ab_r, ldab_r, &rcond_i, work_i,
00179                                   rwork_i );
00180 
00181     failed = compare_ztbcon( rcond, rcond_i, info, info_i );
00182     if( failed == 0 ) {
00183         printf( "PASSED: row-major middle-level interface to ztbcon\n" );
00184     } else {
00185         printf( "FAILED: row-major middle-level interface to ztbcon\n" );
00186     }
00187 
00188     /* Initialize input data, call the row-major high-level
00189      * interface to LAPACK routine and check the results */
00190     for( i = 0; i < ldab*n; i++ ) {
00191         ab_i[i] = ab[i];
00192     }
00193     for( i = 0; i < 2*n; i++ ) {
00194         work_i[i] = work[i];
00195     }
00196     for( i = 0; i < n; i++ ) {
00197         rwork_i[i] = rwork[i];
00198     }
00199 
00200     /* Init row_major arrays */
00201     LAPACKE_zge_trans( LAPACK_COL_MAJOR, kd+1, n, ab_i, ldab, ab_r, n+2 );
00202     info_i = LAPACKE_ztbcon( LAPACK_ROW_MAJOR, norm_i, uplo_i, diag_i, n_i,
00203                              kd_i, ab_r, ldab_r, &rcond_i );
00204 
00205     failed = compare_ztbcon( rcond, rcond_i, info, info_i );
00206     if( failed == 0 ) {
00207         printf( "PASSED: row-major high-level interface to ztbcon\n" );
00208     } else {
00209         printf( "FAILED: row-major high-level interface to ztbcon\n" );
00210     }
00211 
00212     /* Release memory */
00213     if( ab != NULL ) {
00214         LAPACKE_free( ab );
00215     }
00216     if( ab_i != NULL ) {
00217         LAPACKE_free( ab_i );
00218     }
00219     if( ab_r != NULL ) {
00220         LAPACKE_free( ab_r );
00221     }
00222     if( work != NULL ) {
00223         LAPACKE_free( work );
00224     }
00225     if( work_i != NULL ) {
00226         LAPACKE_free( work_i );
00227     }
00228     if( rwork != NULL ) {
00229         LAPACKE_free( rwork );
00230     }
00231     if( rwork_i != NULL ) {
00232         LAPACKE_free( rwork_i );
00233     }
00234 
00235     return 0;
00236 }
00237 
00238 /* Auxiliary function: ztbcon scalar parameters initialization */
00239 static void init_scalars_ztbcon( char *norm, char *uplo, char *diag,
00240                                  lapack_int *n, lapack_int *kd,
00241                                  lapack_int *ldab )
00242 {
00243     *norm = '1';
00244     *uplo = 'L';
00245     *diag = 'N';
00246     *n = 4;
00247     *kd = 2;
00248     *ldab = 9;
00249 
00250     return;
00251 }
00252 
00253 /* Auxiliary functions: ztbcon array parameters initialization */
00254 static void init_ab( lapack_int size, lapack_complex_double *ab ) {
00255     lapack_int i;
00256     for( i = 0; i < size; i++ ) {
00257         ab[i] = lapack_make_complex_double( 0.0, 0.0 );
00258     }
00259     ab[0] = lapack_make_complex_double( -1.93999999999999990e+000,
00260                                         4.42999999999999970e+000 );
00261     ab[9] = lapack_make_complex_double( 4.12000000000000010e+000,
00262                                         -4.26999999999999960e+000 );
00263     ab[18] = lapack_make_complex_double( 4.29999999999999990e-001,
00264                                          -2.66000000000000010e+000 );
00265     ab[27] = lapack_make_complex_double( 4.40000000000000000e-001,
00266                                          1.00000000000000010e-001 );
00267     ab[1] = lapack_make_complex_double( -3.39000000000000010e+000,
00268                                         3.43999999999999990e+000 );
00269     ab[10] = lapack_make_complex_double( -1.84000000000000010e+000,
00270                                          5.53000000000000020e+000 );
00271     ab[19] = lapack_make_complex_double( 1.74000000000000000e+000,
00272                                          -4.00000000000000010e-002 );
00273     ab[28] = lapack_make_complex_double( 0.00000000000000000e+000,
00274                                          0.00000000000000000e+000 );
00275     ab[2] = lapack_make_complex_double( 1.62000000000000010e+000,
00276                                         3.68000000000000020e+000 );
00277     ab[11] = lapack_make_complex_double( -2.77000000000000000e+000,
00278                                          -1.92999999999999990e+000 );
00279     ab[20] = lapack_make_complex_double( 0.00000000000000000e+000,
00280                                          0.00000000000000000e+000 );
00281     ab[29] = lapack_make_complex_double( 0.00000000000000000e+000,
00282                                          0.00000000000000000e+000 );
00283 }
00284 static void init_work( lapack_int size, lapack_complex_double *work ) {
00285     lapack_int i;
00286     for( i = 0; i < size; i++ ) {
00287         work[i] = lapack_make_complex_double( 0.0, 0.0 );
00288     }
00289 }
00290 static void init_rwork( lapack_int size, double *rwork ) {
00291     lapack_int i;
00292     for( i = 0; i < size; i++ ) {
00293         rwork[i] = 0;
00294     }
00295 }
00296 
00297 /* Auxiliary function: C interface to ztbcon results check */
00298 /* Return value: 0 - test is passed, non-zero - test is failed */
00299 static int compare_ztbcon( double rcond, double rcond_i, lapack_int info,
00300                            lapack_int info_i )
00301 {
00302     int failed = 0;
00303     failed += compare_doubles(rcond,rcond_i);
00304     failed += (info == info_i) ? 0 : 1;
00305     if( info != 0 || info_i != 0 ) {
00306         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00307     }
00308 
00309     return failed;
00310 }


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