zgetri_1.c
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00002   Copyright (c) 2010, Intel Corp.
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00004 
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00016 
00017   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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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 * zgetri_1 is the test program for the C interface to LAPACK
00036 * routine zgetri
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_zgetri( lapack_int *n, lapack_int *lda,
00055                                  lapack_int *lwork );
00056 static void init_a( lapack_int size, lapack_complex_double *a );
00057 static void init_ipiv( lapack_int size, lapack_int *ipiv );
00058 static void init_work( lapack_int size, lapack_complex_double *work );
00059 static int compare_zgetri( lapack_complex_double *a, lapack_complex_double *a_i,
00060                            lapack_int info, lapack_int info_i, lapack_int lda,
00061                            lapack_int n );
00062 
00063 int main(void)
00064 {
00065     /* Local scalars */
00066     lapack_int n, n_i;
00067     lapack_int lda, lda_i;
00068     lapack_int lda_r;
00069     lapack_int lwork, lwork_i;
00070     lapack_int info, info_i;
00071     lapack_int i;
00072     int failed;
00073 
00074     /* Local arrays */
00075     lapack_complex_double *a = NULL, *a_i = NULL;
00076     lapack_int *ipiv = NULL, *ipiv_i = NULL;
00077     lapack_complex_double *work = NULL, *work_i = NULL;
00078     lapack_complex_double *a_save = NULL;
00079     lapack_complex_double *a_r = NULL;
00080 
00081     /* Iniitialize the scalar parameters */
00082     init_scalars_zgetri( &n, &lda, &lwork );
00083     lda_r = n+2;
00084     n_i = n;
00085     lda_i = lda;
00086     lwork_i = lwork;
00087 
00088     /* Allocate memory for the LAPACK routine arrays */
00089     a = (lapack_complex_double *)
00090         LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
00091     ipiv = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00092     work = (lapack_complex_double *)
00093         LAPACKE_malloc( lwork * sizeof(lapack_complex_double) );
00094 
00095     /* Allocate memory for the C interface function arrays */
00096     a_i = (lapack_complex_double *)
00097         LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
00098     ipiv_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00099     work_i = (lapack_complex_double *)
00100         LAPACKE_malloc( lwork * sizeof(lapack_complex_double) );
00101 
00102     /* Allocate memory for the backup arrays */
00103     a_save = (lapack_complex_double *)
00104         LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
00105 
00106     /* Allocate memory for the row-major arrays */
00107     a_r = (lapack_complex_double *)
00108         LAPACKE_malloc( n*(n+2) * sizeof(lapack_complex_double) );
00109 
00110     /* Initialize input arrays */
00111     init_a( lda*n, a );
00112     init_ipiv( n, ipiv );
00113     init_work( lwork, work );
00114 
00115     /* Backup the ouptut arrays */
00116     for( i = 0; i < lda*n; i++ ) {
00117         a_save[i] = a[i];
00118     }
00119 
00120     /* Call the LAPACK routine */
00121     zgetri_( &n, a, &lda, ipiv, work, &lwork, &info );
00122 
00123     /* Initialize input data, call the column-major middle-level
00124      * interface to LAPACK routine and check the results */
00125     for( i = 0; i < lda*n; i++ ) {
00126         a_i[i] = a_save[i];
00127     }
00128     for( i = 0; i < n; i++ ) {
00129         ipiv_i[i] = ipiv[i];
00130     }
00131     for( i = 0; i < lwork; i++ ) {
00132         work_i[i] = work[i];
00133     }
00134     info_i = LAPACKE_zgetri_work( LAPACK_COL_MAJOR, n_i, a_i, lda_i, ipiv_i,
00135                                   work_i, lwork_i );
00136 
00137     failed = compare_zgetri( a, a_i, info, info_i, lda, n );
00138     if( failed == 0 ) {
00139         printf( "PASSED: column-major middle-level interface to zgetri\n" );
00140     } else {
00141         printf( "FAILED: column-major middle-level interface to zgetri\n" );
00142     }
00143 
00144     /* Initialize input data, call the column-major high-level
00145      * interface to LAPACK routine and check the results */
00146     for( i = 0; i < lda*n; i++ ) {
00147         a_i[i] = a_save[i];
00148     }
00149     for( i = 0; i < n; i++ ) {
00150         ipiv_i[i] = ipiv[i];
00151     }
00152     for( i = 0; i < lwork; i++ ) {
00153         work_i[i] = work[i];
00154     }
00155     info_i = LAPACKE_zgetri( LAPACK_COL_MAJOR, n_i, a_i, lda_i, ipiv_i );
00156 
00157     failed = compare_zgetri( a, a_i, info, info_i, lda, n );
00158     if( failed == 0 ) {
00159         printf( "PASSED: column-major high-level interface to zgetri\n" );
00160     } else {
00161         printf( "FAILED: column-major high-level interface to zgetri\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 < lda*n; i++ ) {
00167         a_i[i] = a_save[i];
00168     }
00169     for( i = 0; i < n; i++ ) {
00170         ipiv_i[i] = ipiv[i];
00171     }
00172     for( i = 0; i < lwork; i++ ) {
00173         work_i[i] = work[i];
00174     }
00175 
00176     LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
00177     info_i = LAPACKE_zgetri_work( LAPACK_ROW_MAJOR, n_i, a_r, lda_r, ipiv_i,
00178                                   work_i, lwork_i );
00179 
00180     LAPACKE_zge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );
00181 
00182     failed = compare_zgetri( a, a_i, info, info_i, lda, n );
00183     if( failed == 0 ) {
00184         printf( "PASSED: row-major middle-level interface to zgetri\n" );
00185     } else {
00186         printf( "FAILED: row-major middle-level interface to zgetri\n" );
00187     }
00188 
00189     /* Initialize input data, call the row-major high-level
00190      * interface to LAPACK routine and check the results */
00191     for( i = 0; i < lda*n; i++ ) {
00192         a_i[i] = a_save[i];
00193     }
00194     for( i = 0; i < n; i++ ) {
00195         ipiv_i[i] = ipiv[i];
00196     }
00197     for( i = 0; i < lwork; i++ ) {
00198         work_i[i] = work[i];
00199     }
00200 
00201     /* Init row_major arrays */
00202     LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
00203     info_i = LAPACKE_zgetri( LAPACK_ROW_MAJOR, n_i, a_r, lda_r, ipiv_i );
00204 
00205     LAPACKE_zge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );
00206 
00207     failed = compare_zgetri( a, a_i, info, info_i, lda, n );
00208     if( failed == 0 ) {
00209         printf( "PASSED: row-major high-level interface to zgetri\n" );
00210     } else {
00211         printf( "FAILED: row-major high-level interface to zgetri\n" );
00212     }
00213 
00214     /* Release memory */
00215     if( a != NULL ) {
00216         LAPACKE_free( a );
00217     }
00218     if( a_i != NULL ) {
00219         LAPACKE_free( a_i );
00220     }
00221     if( a_r != NULL ) {
00222         LAPACKE_free( a_r );
00223     }
00224     if( a_save != NULL ) {
00225         LAPACKE_free( a_save );
00226     }
00227     if( ipiv != NULL ) {
00228         LAPACKE_free( ipiv );
00229     }
00230     if( ipiv_i != NULL ) {
00231         LAPACKE_free( ipiv_i );
00232     }
00233     if( work != NULL ) {
00234         LAPACKE_free( work );
00235     }
00236     if( work_i != NULL ) {
00237         LAPACKE_free( work_i );
00238     }
00239 
00240     return 0;
00241 }
00242 
00243 /* Auxiliary function: zgetri scalar parameters initialization */
00244 static void init_scalars_zgetri( lapack_int *n, lapack_int *lda,
00245                                  lapack_int *lwork )
00246 {
00247     *n = 4;
00248     *lda = 8;
00249     *lwork = 512;
00250 
00251     return;
00252 }
00253 
00254 /* Auxiliary functions: zgetri array parameters initialization */
00255 static void init_a( lapack_int size, lapack_complex_double *a ) {
00256     lapack_int i;
00257     for( i = 0; i < size; i++ ) {
00258         a[i] = lapack_make_complex_double( 0.0, 0.0 );
00259     }
00260     a[0] = lapack_make_complex_double( -3.29000000000000000e+000,
00261                                        -2.39000000000000010e+000 );
00262     a[8] = lapack_make_complex_double( -1.90999999999999990e+000,
00263                                        4.41999999999999990e+000 );
00264     a[16] = lapack_make_complex_double( -1.40000000000000010e-001,
00265                                         -1.35000000000000010e+000 );
00266     a[24] = lapack_make_complex_double( 1.72000000000000000e+000,
00267                                         1.35000000000000010e+000 );
00268     a[1] = lapack_make_complex_double( 2.37612026946940610e-001,
00269                                        2.55959652157085600e-001 );
00270     a[9] = lapack_make_complex_double( 4.89518063400297530e+000,
00271                                        -7.11362223485444090e-001 );
00272     a[17] = lapack_make_complex_double( -4.62279846639493950e-001,
00273                                         1.69661058768036190e+000 );
00274     a[25] = lapack_make_complex_double( 1.22685284406332770e+000,
00275                                         6.18973161911442920e-001 );
00276     a[2] = lapack_make_complex_double( -1.01952080889200600e-001,
00277                                        -7.01013533943711350e-001 );
00278     a[10] = lapack_make_complex_double( -6.69149643194321130e-001,
00279                                         3.68869854797165500e-001 );
00280     a[18] = lapack_make_complex_double( -5.14141091381023150e+000,
00281                                         -1.12996973466095300e+000 );
00282     a[26] = lapack_make_complex_double( 9.98257991519944880e-001,
00283                                         3.85015227576377740e-001 );
00284     a[3] = lapack_make_complex_double( -5.35854670359574790e-001,
00285                                        2.70727252935982880e-001 );
00286     a[11] = lapack_make_complex_double( -2.04021779458707920e-001,
00287                                         8.60118067998404510e-001 );
00288     a[19] = lapack_make_complex_double( 8.23304706394011040e-003,
00289                                         1.21063681991063470e-001 );
00290     a[27] = lapack_make_complex_double( 1.48239181074841820e-001,
00291                                         -1.25223998607584600e-001 );
00292 }
00293 static void init_ipiv( lapack_int size, lapack_int *ipiv ) {
00294     lapack_int i;
00295     for( i = 0; i < size; i++ ) {
00296         ipiv[i] = 0;
00297     }
00298     ipiv[0] = 3;
00299     ipiv[1] = 2;
00300     ipiv[2] = 3;
00301     ipiv[3] = 4;
00302 }
00303 static void init_work( lapack_int size, lapack_complex_double *work ) {
00304     lapack_int i;
00305     for( i = 0; i < size; i++ ) {
00306         work[i] = lapack_make_complex_double( 0.0, 0.0 );
00307     }
00308 }
00309 
00310 /* Auxiliary function: C interface to zgetri results check */
00311 /* Return value: 0 - test is passed, non-zero - test is failed */
00312 static int compare_zgetri( lapack_complex_double *a, lapack_complex_double *a_i,
00313                            lapack_int info, lapack_int info_i, lapack_int lda,
00314                            lapack_int n )
00315 {
00316     lapack_int i;
00317     int failed = 0;
00318     for( i = 0; i < lda*n; i++ ) {
00319         failed += compare_complex_doubles(a[i],a_i[i]);
00320     }
00321     failed += (info == info_i) ? 0 : 1;
00322     if( info != 0 || info_i != 0 ) {
00323         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00324     }
00325 
00326     return failed;
00327 }


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