chetri_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 * chetri_1 is the test program for the C interface to LAPACK
00036 * routine chetri
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_chetri( char *uplo, lapack_int *n, lapack_int *lda );
00055 static void init_a( lapack_int size, lapack_complex_float *a );
00056 static void init_ipiv( lapack_int size, lapack_int *ipiv );
00057 static void init_work( lapack_int size, lapack_complex_float *work );
00058 static int compare_chetri( lapack_complex_float *a, lapack_complex_float *a_i,
00059                            lapack_int info, lapack_int info_i, lapack_int lda,
00060                            lapack_int n );
00061 
00062 int main(void)
00063 {
00064     /* Local scalars */
00065     char uplo, uplo_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_float *a = NULL, *a_i = NULL;
00075     lapack_int *ipiv = NULL, *ipiv_i = NULL;
00076     lapack_complex_float *work = NULL, *work_i = NULL;
00077     lapack_complex_float *a_save = NULL;
00078     lapack_complex_float *a_r = NULL;
00079 
00080     /* Iniitialize the scalar parameters */
00081     init_scalars_chetri( &uplo, &n, &lda );
00082     lda_r = n+2;
00083     uplo_i = uplo;
00084     n_i = n;
00085     lda_i = lda;
00086 
00087     /* Allocate memory for the LAPACK routine arrays */
00088     a = (lapack_complex_float *)
00089         LAPACKE_malloc( lda*n * sizeof(lapack_complex_float) );
00090     ipiv = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00091     work = (lapack_complex_float *)
00092         LAPACKE_malloc( n * sizeof(lapack_complex_float) );
00093 
00094     /* Allocate memory for the C interface function arrays */
00095     a_i = (lapack_complex_float *)
00096         LAPACKE_malloc( lda*n * sizeof(lapack_complex_float) );
00097     ipiv_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00098     work_i = (lapack_complex_float *)
00099         LAPACKE_malloc( n * sizeof(lapack_complex_float) );
00100 
00101     /* Allocate memory for the backup arrays */
00102     a_save = (lapack_complex_float *)
00103         LAPACKE_malloc( lda*n * sizeof(lapack_complex_float) );
00104 
00105     /* Allocate memory for the row-major arrays */
00106     a_r = (lapack_complex_float *)
00107         LAPACKE_malloc( n*(n+2) * sizeof(lapack_complex_float) );
00108 
00109     /* Initialize input arrays */
00110     init_a( lda*n, a );
00111     init_ipiv( n, ipiv );
00112     init_work( n, work );
00113 
00114     /* Backup the ouptut arrays */
00115     for( i = 0; i < lda*n; i++ ) {
00116         a_save[i] = a[i];
00117     }
00118 
00119     /* Call the LAPACK routine */
00120     chetri_( &uplo, &n, a, &lda, ipiv, work, &info );
00121 
00122     /* Initialize input data, call the column-major middle-level
00123      * interface to LAPACK routine and check the results */
00124     for( i = 0; i < lda*n; i++ ) {
00125         a_i[i] = a_save[i];
00126     }
00127     for( i = 0; i < n; i++ ) {
00128         ipiv_i[i] = ipiv[i];
00129     }
00130     for( i = 0; i < n; i++ ) {
00131         work_i[i] = work[i];
00132     }
00133     info_i = LAPACKE_chetri_work( LAPACK_COL_MAJOR, uplo_i, n_i, a_i, lda_i,
00134                                   ipiv_i, work_i );
00135 
00136     failed = compare_chetri( a, a_i, info, info_i, lda, n );
00137     if( failed == 0 ) {
00138         printf( "PASSED: column-major middle-level interface to chetri\n" );
00139     } else {
00140         printf( "FAILED: column-major middle-level interface to chetri\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 < lda*n; i++ ) {
00146         a_i[i] = a_save[i];
00147     }
00148     for( i = 0; i < n; i++ ) {
00149         ipiv_i[i] = ipiv[i];
00150     }
00151     for( i = 0; i < n; i++ ) {
00152         work_i[i] = work[i];
00153     }
00154     info_i = LAPACKE_chetri( LAPACK_COL_MAJOR, uplo_i, n_i, a_i, lda_i,
00155                              ipiv_i );
00156 
00157     failed = compare_chetri( a, a_i, info, info_i, lda, n );
00158     if( failed == 0 ) {
00159         printf( "PASSED: column-major high-level interface to chetri\n" );
00160     } else {
00161         printf( "FAILED: column-major high-level interface to chetri\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 < n; i++ ) {
00173         work_i[i] = work[i];
00174     }
00175 
00176     LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
00177     info_i = LAPACKE_chetri_work( LAPACK_ROW_MAJOR, uplo_i, n_i, a_r, lda_r,
00178                                   ipiv_i, work_i );
00179 
00180     LAPACKE_cge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );
00181 
00182     failed = compare_chetri( a, a_i, info, info_i, lda, n );
00183     if( failed == 0 ) {
00184         printf( "PASSED: row-major middle-level interface to chetri\n" );
00185     } else {
00186         printf( "FAILED: row-major middle-level interface to chetri\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 < n; i++ ) {
00198         work_i[i] = work[i];
00199     }
00200 
00201     /* Init row_major arrays */
00202     LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
00203     info_i = LAPACKE_chetri( LAPACK_ROW_MAJOR, uplo_i, n_i, a_r, lda_r,
00204                              ipiv_i );
00205 
00206     LAPACKE_cge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );
00207 
00208     failed = compare_chetri( a, a_i, info, info_i, lda, n );
00209     if( failed == 0 ) {
00210         printf( "PASSED: row-major high-level interface to chetri\n" );
00211     } else {
00212         printf( "FAILED: row-major high-level interface to chetri\n" );
00213     }
00214 
00215     /* Release memory */
00216     if( a != NULL ) {
00217         LAPACKE_free( a );
00218     }
00219     if( a_i != NULL ) {
00220         LAPACKE_free( a_i );
00221     }
00222     if( a_r != NULL ) {
00223         LAPACKE_free( a_r );
00224     }
00225     if( a_save != NULL ) {
00226         LAPACKE_free( a_save );
00227     }
00228     if( ipiv != NULL ) {
00229         LAPACKE_free( ipiv );
00230     }
00231     if( ipiv_i != NULL ) {
00232         LAPACKE_free( ipiv_i );
00233     }
00234     if( work != NULL ) {
00235         LAPACKE_free( work );
00236     }
00237     if( work_i != NULL ) {
00238         LAPACKE_free( work_i );
00239     }
00240 
00241     return 0;
00242 }
00243 
00244 /* Auxiliary function: chetri scalar parameters initialization */
00245 static void init_scalars_chetri( char *uplo, lapack_int *n, lapack_int *lda )
00246 {
00247     *uplo = 'L';
00248     *n = 4;
00249     *lda = 8;
00250 
00251     return;
00252 }
00253 
00254 /* Auxiliary functions: chetri array parameters initialization */
00255 static void init_a( lapack_int size, lapack_complex_float *a ) {
00256     lapack_int i;
00257     for( i = 0; i < size; i++ ) {
00258         a[i] = lapack_make_complex_float( 0.0f, 0.0f );
00259     }
00260     a[0] = lapack_make_complex_float( -1.360000014e+000, 0.000000000e+000 );
00261     a[8] = lapack_make_complex_float( 0.000000000e+000, 0.000000000e+000 );
00262     a[16] = lapack_make_complex_float( 0.000000000e+000, 0.000000000e+000 );
00263     a[24] = lapack_make_complex_float( 0.000000000e+000, 0.000000000e+000 );
00264     a[1] = lapack_make_complex_float( 3.910000086e+000, -1.500000000e+000 );
00265     a[9] = lapack_make_complex_float( -1.840000033e+000, 0.000000000e+000 );
00266     a[17] = lapack_make_complex_float( 0.000000000e+000, 0.000000000e+000 );
00267     a[25] = lapack_make_complex_float( 0.000000000e+000, 0.000000000e+000 );
00268     a[2] = lapack_make_complex_float( 3.100287914e-001, 4.333020747e-002 );
00269     a[10] = lapack_make_complex_float( 5.637050867e-001, 2.850349545e-001 );
00270     a[18] = lapack_make_complex_float( -5.417624474e+000, 0.000000000e+000 );
00271     a[26] = lapack_make_complex_float( 0.000000000e+000, 0.000000000e+000 );
00272     a[3] = lapack_make_complex_float( -1.518120319e-001, 3.742958307e-001 );
00273     a[11] = lapack_make_complex_float( 3.396582901e-001, 3.031452000e-002 );
00274     a[19] = lapack_make_complex_float( 2.997244596e-001, 1.578268409e-001 );
00275     a[27] = lapack_make_complex_float( -7.102809906e+000, 0.000000000e+000 );
00276 }
00277 static void init_ipiv( lapack_int size, lapack_int *ipiv ) {
00278     lapack_int i;
00279     for( i = 0; i < size; i++ ) {
00280         ipiv[i] = 0;
00281     }
00282     ipiv[0] = -4;
00283     ipiv[1] = -4;
00284     ipiv[2] = 3;
00285     ipiv[3] = 4;
00286 }
00287 static void init_work( lapack_int size, lapack_complex_float *work ) {
00288     lapack_int i;
00289     for( i = 0; i < size; i++ ) {
00290         work[i] = lapack_make_complex_float( 0.0f, 0.0f );
00291     }
00292 }
00293 
00294 /* Auxiliary function: C interface to chetri results check */
00295 /* Return value: 0 - test is passed, non-zero - test is failed */
00296 static int compare_chetri( lapack_complex_float *a, lapack_complex_float *a_i,
00297                            lapack_int info, lapack_int info_i, lapack_int lda,
00298                            lapack_int n )
00299 {
00300     lapack_int i;
00301     int failed = 0;
00302     for( i = 0; i < lda*n; i++ ) {
00303         failed += compare_complex_floats(a[i],a_i[i]);
00304     }
00305     failed += (info == info_i) ? 0 : 1;
00306     if( info != 0 || info_i != 0 ) {
00307         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00308     }
00309 
00310     return failed;
00311 }


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