dorglq_1.c
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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 * dorglq_1 is the test program for the C interface to LAPACK
00036 * routine dorglq
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_dorglq( lapack_int *m, lapack_int *n, lapack_int *k,
00055                                  lapack_int *lda, lapack_int *lwork );
00056 static void init_a( lapack_int size, double *a );
00057 static void init_tau( lapack_int size, double *tau );
00058 static void init_work( lapack_int size, double *work );
00059 static int compare_dorglq( double *a, double *a_i, lapack_int info,
00060                            lapack_int info_i, lapack_int lda, lapack_int n );
00061 
00062 int main(void)
00063 {
00064     /* Local scalars */
00065     lapack_int m, m_i;
00066     lapack_int n, n_i;
00067     lapack_int k, k_i;
00068     lapack_int lda, lda_i;
00069     lapack_int lda_r;
00070     lapack_int lwork, lwork_i;
00071     lapack_int info, info_i;
00072     lapack_int i;
00073     int failed;
00074 
00075     /* Local arrays */
00076     double *a = NULL, *a_i = NULL;
00077     double *tau = NULL, *tau_i = NULL;
00078     double *work = NULL, *work_i = NULL;
00079     double *a_save = NULL;
00080     double *a_r = NULL;
00081 
00082     /* Iniitialize the scalar parameters */
00083     init_scalars_dorglq( &m, &n, &k, &lda, &lwork );
00084     lda_r = n+2;
00085     m_i = m;
00086     n_i = n;
00087     k_i = k;
00088     lda_i = lda;
00089     lwork_i = lwork;
00090 
00091     /* Allocate memory for the LAPACK routine arrays */
00092     a = (double *)LAPACKE_malloc( lda*n * sizeof(double) );
00093     tau = (double *)LAPACKE_malloc( k * sizeof(double) );
00094     work = (double *)LAPACKE_malloc( lwork * sizeof(double) );
00095 
00096     /* Allocate memory for the C interface function arrays */
00097     a_i = (double *)LAPACKE_malloc( lda*n * sizeof(double) );
00098     tau_i = (double *)LAPACKE_malloc( k * sizeof(double) );
00099     work_i = (double *)LAPACKE_malloc( lwork * sizeof(double) );
00100 
00101     /* Allocate memory for the backup arrays */
00102     a_save = (double *)LAPACKE_malloc( lda*n * sizeof(double) );
00103 
00104     /* Allocate memory for the row-major arrays */
00105     a_r = (double *)LAPACKE_malloc( m*(n+2) * sizeof(double) );
00106 
00107     /* Initialize input arrays */
00108     init_a( lda*n, a );
00109     init_tau( k, tau );
00110     init_work( lwork, work );
00111 
00112     /* Backup the ouptut arrays */
00113     for( i = 0; i < lda*n; i++ ) {
00114         a_save[i] = a[i];
00115     }
00116 
00117     /* Call the LAPACK routine */
00118     dorglq_( &m, &n, &k, a, &lda, tau, work, &lwork, &info );
00119 
00120     /* Initialize input data, call the column-major middle-level
00121      * interface to LAPACK routine and check the results */
00122     for( i = 0; i < lda*n; i++ ) {
00123         a_i[i] = a_save[i];
00124     }
00125     for( i = 0; i < k; i++ ) {
00126         tau_i[i] = tau[i];
00127     }
00128     for( i = 0; i < lwork; i++ ) {
00129         work_i[i] = work[i];
00130     }
00131     info_i = LAPACKE_dorglq_work( LAPACK_COL_MAJOR, m_i, n_i, k_i, a_i, lda_i,
00132                                   tau_i, work_i, lwork_i );
00133 
00134     failed = compare_dorglq( a, a_i, info, info_i, lda, n );
00135     if( failed == 0 ) {
00136         printf( "PASSED: column-major middle-level interface to dorglq\n" );
00137     } else {
00138         printf( "FAILED: column-major middle-level interface to dorglq\n" );
00139     }
00140 
00141     /* Initialize input data, call the column-major high-level
00142      * interface to LAPACK routine and check the results */
00143     for( i = 0; i < lda*n; i++ ) {
00144         a_i[i] = a_save[i];
00145     }
00146     for( i = 0; i < k; i++ ) {
00147         tau_i[i] = tau[i];
00148     }
00149     for( i = 0; i < lwork; i++ ) {
00150         work_i[i] = work[i];
00151     }
00152     info_i = LAPACKE_dorglq( LAPACK_COL_MAJOR, m_i, n_i, k_i, a_i, lda_i,
00153                              tau_i );
00154 
00155     failed = compare_dorglq( a, a_i, info, info_i, lda, n );
00156     if( failed == 0 ) {
00157         printf( "PASSED: column-major high-level interface to dorglq\n" );
00158     } else {
00159         printf( "FAILED: column-major high-level interface to dorglq\n" );
00160     }
00161 
00162     /* Initialize input data, call the row-major middle-level
00163      * interface to LAPACK routine and check the results */
00164     for( i = 0; i < lda*n; i++ ) {
00165         a_i[i] = a_save[i];
00166     }
00167     for( i = 0; i < k; i++ ) {
00168         tau_i[i] = tau[i];
00169     }
00170     for( i = 0; i < lwork; i++ ) {
00171         work_i[i] = work[i];
00172     }
00173 
00174     LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_i, lda, a_r, n+2 );
00175     info_i = LAPACKE_dorglq_work( LAPACK_ROW_MAJOR, m_i, n_i, k_i, a_r, lda_r,
00176                                   tau_i, work_i, lwork_i );
00177 
00178     LAPACKE_dge_trans( LAPACK_ROW_MAJOR, m, n, a_r, n+2, a_i, lda );
00179 
00180     failed = compare_dorglq( a, a_i, info, info_i, lda, n );
00181     if( failed == 0 ) {
00182         printf( "PASSED: row-major middle-level interface to dorglq\n" );
00183     } else {
00184         printf( "FAILED: row-major middle-level interface to dorglq\n" );
00185     }
00186 
00187     /* Initialize input data, call the row-major high-level
00188      * interface to LAPACK routine and check the results */
00189     for( i = 0; i < lda*n; i++ ) {
00190         a_i[i] = a_save[i];
00191     }
00192     for( i = 0; i < k; i++ ) {
00193         tau_i[i] = tau[i];
00194     }
00195     for( i = 0; i < lwork; i++ ) {
00196         work_i[i] = work[i];
00197     }
00198 
00199     /* Init row_major arrays */
00200     LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_i, lda, a_r, n+2 );
00201     info_i = LAPACKE_dorglq( LAPACK_ROW_MAJOR, m_i, n_i, k_i, a_r, lda_r,
00202                              tau_i );
00203 
00204     LAPACKE_dge_trans( LAPACK_ROW_MAJOR, m, n, a_r, n+2, a_i, lda );
00205 
00206     failed = compare_dorglq( a, a_i, info, info_i, lda, n );
00207     if( failed == 0 ) {
00208         printf( "PASSED: row-major high-level interface to dorglq\n" );
00209     } else {
00210         printf( "FAILED: row-major high-level interface to dorglq\n" );
00211     }
00212 
00213     /* Release memory */
00214     if( a != NULL ) {
00215         LAPACKE_free( a );
00216     }
00217     if( a_i != NULL ) {
00218         LAPACKE_free( a_i );
00219     }
00220     if( a_r != NULL ) {
00221         LAPACKE_free( a_r );
00222     }
00223     if( a_save != NULL ) {
00224         LAPACKE_free( a_save );
00225     }
00226     if( tau != NULL ) {
00227         LAPACKE_free( tau );
00228     }
00229     if( tau_i != NULL ) {
00230         LAPACKE_free( tau_i );
00231     }
00232     if( work != NULL ) {
00233         LAPACKE_free( work );
00234     }
00235     if( work_i != NULL ) {
00236         LAPACKE_free( work_i );
00237     }
00238 
00239     return 0;
00240 }
00241 
00242 /* Auxiliary function: dorglq scalar parameters initialization */
00243 static void init_scalars_dorglq( lapack_int *m, lapack_int *n, lapack_int *k,
00244                                  lapack_int *lda, lapack_int *lwork )
00245 {
00246     *m = 4;
00247     *n = 6;
00248     *k = 4;
00249     *lda = 8;
00250     *lwork = 512;
00251 
00252     return;
00253 }
00254 
00255 /* Auxiliary functions: dorglq array parameters initialization */
00256 static void init_a( lapack_int size, double *a ) {
00257     lapack_int i;
00258     for( i = 0; i < size; i++ ) {
00259         a[i] = 0;
00260     }
00261     a[0] = 7.62923980485605120e+000;  /* a[0,0] */
00262     a[8] = -2.51355638263265290e-001;  /* a[0,1] */
00263     a[16] = 2.82008764880736670e-001;  /* a[0,2] */
00264     a[24] = -2.06908604667931820e-002;  /* a[0,3] */
00265     a[32] = -1.57863602079977600e-001;  /* a[0,4] */
00266     a[40] = -3.52510956100920840e-002;  /* a[0,5] */
00267     a[1] = 1.20680437835230640e-001;  /* a[1,0] */
00268     a[9] = 6.48479268997273990e+000;  /* a[1,1] */
00269     a[17] = 2.61441274102564740e-001;  /* a[1,2] */
00270     a[25] = 1.03257601872874400e-001;  /* a[1,3] */
00271     a[33] = 4.20095204298865380e-001;  /* a[1,4] */
00272     a[41] = 7.01058900740689300e-003;  /* a[1,5] */
00273     a[2] = 1.02146481161068170e-001;  /* a[2,0] */
00274     a[10] = -1.66186146532236250e+000;  /* a[2,1] */
00275     a[18] = -5.42658111212419050e+000;  /* a[2,2] */
00276     a[26] = 6.05137487741764240e-001;  /* a[2,3] */
00277     a[34] = -5.38668351256243130e-001;  /* a[2,4] */
00278     a[42] = 1.68593777638160250e-001;  /* a[2,5] */
00279     a[3] = 1.47663466979100420e+000;  /* a[3,0] */
00280     a[11] = 1.08823691868845880e-001;  /* a[3,1] */
00281     a[19] = 4.22288562190424880e-001;  /* a[3,2] */
00282     a[27] = 6.25553193791722250e+000;  /* a[3,3] */
00283     a[35] = -1.70447905668462570e-001;  /* a[3,4] */
00284     a[43] = -3.49862972443161500e-001;  /* a[3,5] */
00285 }
00286 static void init_tau( lapack_int size, double *tau ) {
00287     lapack_int i;
00288     for( i = 0; i < size; i++ ) {
00289         tau[i] = 0;
00290     }
00291     tau[0] = 1.71042464762349460e+000;
00292     tau[1] = 1.59293653559008600e+000;
00293     tau[2] = 1.18709943414798150e+000;
00294     tau[3] = 1.73693044165531460e+000;
00295 }
00296 static void init_work( lapack_int size, double *work ) {
00297     lapack_int i;
00298     for( i = 0; i < size; i++ ) {
00299         work[i] = 0;
00300     }
00301 }
00302 
00303 /* Auxiliary function: C interface to dorglq results check */
00304 /* Return value: 0 - test is passed, non-zero - test is failed */
00305 static int compare_dorglq( double *a, double *a_i, lapack_int info,
00306                            lapack_int info_i, lapack_int lda, lapack_int n )
00307 {
00308     lapack_int i;
00309     int failed = 0;
00310     for( i = 0; i < lda*n; i++ ) {
00311         failed += compare_doubles(a[i],a_i[i]);
00312     }
00313     failed += (info == info_i) ? 0 : 1;
00314     if( info != 0 || info_i != 0 ) {
00315         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00316     }
00317 
00318     return failed;
00319 }


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