ztrtri_1.c
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00002   Copyright (c) 2010, Intel Corp.
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00004 
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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 * ztrtri_1 is the test program for the C interface to LAPACK
00036 * routine ztrtri
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_ztrtri( char *uplo, char *diag, lapack_int *n,
00055                                  lapack_int *lda );
00056 static void init_a( lapack_int size, lapack_complex_double *a );
00057 static int compare_ztrtri( lapack_complex_double *a, lapack_complex_double *a_i,
00058                            lapack_int info, lapack_int info_i, lapack_int lda,
00059                            lapack_int n );
00060 
00061 int main(void)
00062 {
00063     /* Local scalars */
00064     char uplo, uplo_i;
00065     char diag, diag_i;
00066     lapack_int n, n_i;
00067     lapack_int lda, lda_i;
00068     lapack_int lda_r;
00069     lapack_int info, info_i;
00070     lapack_int i;
00071     int failed;
00072 
00073     /* Local arrays */
00074     lapack_complex_double *a = NULL, *a_i = NULL;
00075     lapack_complex_double *a_save = NULL;
00076     lapack_complex_double *a_r = NULL;
00077 
00078     /* Iniitialize the scalar parameters */
00079     init_scalars_ztrtri( &uplo, &diag, &n, &lda );
00080     lda_r = n+2;
00081     uplo_i = uplo;
00082     diag_i = diag;
00083     n_i = n;
00084     lda_i = lda;
00085 
00086     /* Allocate memory for the LAPACK routine arrays */
00087     a = (lapack_complex_double *)
00088         LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
00089 
00090     /* Allocate memory for the C interface function arrays */
00091     a_i = (lapack_complex_double *)
00092         LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
00093 
00094     /* Allocate memory for the backup arrays */
00095     a_save = (lapack_complex_double *)
00096         LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
00097 
00098     /* Allocate memory for the row-major arrays */
00099     a_r = (lapack_complex_double *)
00100         LAPACKE_malloc( n*(n+2) * sizeof(lapack_complex_double) );
00101 
00102     /* Initialize input arrays */
00103     init_a( lda*n, a );
00104 
00105     /* Backup the ouptut arrays */
00106     for( i = 0; i < lda*n; i++ ) {
00107         a_save[i] = a[i];
00108     }
00109 
00110     /* Call the LAPACK routine */
00111     ztrtri_( &uplo, &diag, &n, a, &lda, &info );
00112 
00113     /* Initialize input data, call the column-major middle-level
00114      * interface to LAPACK routine and check the results */
00115     for( i = 0; i < lda*n; i++ ) {
00116         a_i[i] = a_save[i];
00117     }
00118     info_i = LAPACKE_ztrtri_work( LAPACK_COL_MAJOR, uplo_i, diag_i, n_i, a_i,
00119                                   lda_i );
00120 
00121     failed = compare_ztrtri( a, a_i, info, info_i, lda, n );
00122     if( failed == 0 ) {
00123         printf( "PASSED: column-major middle-level interface to ztrtri\n" );
00124     } else {
00125         printf( "FAILED: column-major middle-level interface to ztrtri\n" );
00126     }
00127 
00128     /* Initialize input data, call the column-major high-level
00129      * interface to LAPACK routine and check the results */
00130     for( i = 0; i < lda*n; i++ ) {
00131         a_i[i] = a_save[i];
00132     }
00133     info_i = LAPACKE_ztrtri( LAPACK_COL_MAJOR, uplo_i, diag_i, n_i, a_i,
00134                              lda_i );
00135 
00136     failed = compare_ztrtri( a, a_i, info, info_i, lda, n );
00137     if( failed == 0 ) {
00138         printf( "PASSED: column-major high-level interface to ztrtri\n" );
00139     } else {
00140         printf( "FAILED: column-major high-level interface to ztrtri\n" );
00141     }
00142 
00143     /* Initialize input data, call the row-major middle-level
00144      * interface to LAPACK routine and check the results */
00145     for( i = 0; i < lda*n; i++ ) {
00146         a_i[i] = a_save[i];
00147     }
00148 
00149     LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
00150     info_i = LAPACKE_ztrtri_work( LAPACK_ROW_MAJOR, uplo_i, diag_i, n_i, a_r,
00151                                   lda_r );
00152 
00153     LAPACKE_zge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );
00154 
00155     failed = compare_ztrtri( a, a_i, info, info_i, lda, n );
00156     if( failed == 0 ) {
00157         printf( "PASSED: row-major middle-level interface to ztrtri\n" );
00158     } else {
00159         printf( "FAILED: row-major middle-level interface to ztrtri\n" );
00160     }
00161 
00162     /* Initialize input data, call the row-major high-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 
00168     /* Init row_major arrays */
00169     LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
00170     info_i = LAPACKE_ztrtri( LAPACK_ROW_MAJOR, uplo_i, diag_i, n_i, a_r,
00171                              lda_r );
00172 
00173     LAPACKE_zge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );
00174 
00175     failed = compare_ztrtri( a, a_i, info, info_i, lda, n );
00176     if( failed == 0 ) {
00177         printf( "PASSED: row-major high-level interface to ztrtri\n" );
00178     } else {
00179         printf( "FAILED: row-major high-level interface to ztrtri\n" );
00180     }
00181 
00182     /* Release memory */
00183     if( a != NULL ) {
00184         LAPACKE_free( a );
00185     }
00186     if( a_i != NULL ) {
00187         LAPACKE_free( a_i );
00188     }
00189     if( a_r != NULL ) {
00190         LAPACKE_free( a_r );
00191     }
00192     if( a_save != NULL ) {
00193         LAPACKE_free( a_save );
00194     }
00195 
00196     return 0;
00197 }
00198 
00199 /* Auxiliary function: ztrtri scalar parameters initialization */
00200 static void init_scalars_ztrtri( char *uplo, char *diag, lapack_int *n,
00201                                  lapack_int *lda )
00202 {
00203     *uplo = 'L';
00204     *diag = 'N';
00205     *n = 4;
00206     *lda = 8;
00207 
00208     return;
00209 }
00210 
00211 /* Auxiliary functions: ztrtri array parameters initialization */
00212 static void init_a( lapack_int size, lapack_complex_double *a ) {
00213     lapack_int i;
00214     for( i = 0; i < size; i++ ) {
00215         a[i] = lapack_make_complex_double( 0.0, 0.0 );
00216     }
00217     a[0] = lapack_make_complex_double( 4.78000000000000020e+000,
00218                                        4.55999999999999960e+000 );
00219     a[8] = lapack_make_complex_double( 0.00000000000000000e+000,
00220                                        0.00000000000000000e+000 );
00221     a[16] = lapack_make_complex_double( 0.00000000000000000e+000,
00222                                         0.00000000000000000e+000 );
00223     a[24] = lapack_make_complex_double( 0.00000000000000000e+000,
00224                                         0.00000000000000000e+000 );
00225     a[1] = lapack_make_complex_double( 2.00000000000000000e+000,
00226                                        -2.99999999999999990e-001 );
00227     a[9] = lapack_make_complex_double( -4.11000000000000030e+000,
00228                                        1.25000000000000000e+000 );
00229     a[17] = lapack_make_complex_double( 0.00000000000000000e+000,
00230                                         0.00000000000000000e+000 );
00231     a[25] = lapack_make_complex_double( 0.00000000000000000e+000,
00232                                         0.00000000000000000e+000 );
00233     a[2] = lapack_make_complex_double( 2.89000000000000010e+000,
00234                                        -1.34000000000000010e+000 );
00235     a[10] = lapack_make_complex_double( 2.35999999999999990e+000,
00236                                         -4.25000000000000000e+000 );
00237     a[18] = lapack_make_complex_double( 4.15000000000000040e+000,
00238                                         8.00000000000000040e-001 );
00239     a[26] = lapack_make_complex_double( 0.00000000000000000e+000,
00240                                         0.00000000000000000e+000 );
00241     a[3] = lapack_make_complex_double( -1.88999999999999990e+000,
00242                                        1.14999999999999990e+000 );
00243     a[11] = lapack_make_complex_double( 4.00000000000000010e-002,
00244                                         -3.68999999999999990e+000 );
00245     a[19] = lapack_make_complex_double( -2.00000000000000000e-002,
00246                                         4.60000000000000020e-001 );
00247     a[27] = lapack_make_complex_double( 3.30000000000000020e-001,
00248                                         -2.60000000000000010e-001 );
00249 }
00250 
00251 /* Auxiliary function: C interface to ztrtri results check */
00252 /* Return value: 0 - test is passed, non-zero - test is failed */
00253 static int compare_ztrtri( lapack_complex_double *a, lapack_complex_double *a_i,
00254                            lapack_int info, lapack_int info_i, lapack_int lda,
00255                            lapack_int n )
00256 {
00257     lapack_int i;
00258     int failed = 0;
00259     for( i = 0; i < lda*n; i++ ) {
00260         failed += compare_complex_doubles(a[i],a_i[i]);
00261     }
00262     failed += (info == info_i) ? 0 : 1;
00263     if( info != 0 || info_i != 0 ) {
00264         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00265     }
00266 
00267     return failed;
00268 }


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