cpptrs_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 * cpptrs_1 is the test program for the C interface to LAPACK
00036 * routine cpptrs
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_cpptrs( char *uplo, lapack_int *n, lapack_int *nrhs,
00055                                  lapack_int *ldb );
00056 static void init_ap( lapack_int size, lapack_complex_float *ap );
00057 static void init_b( lapack_int size, lapack_complex_float *b );
00058 static int compare_cpptrs( lapack_complex_float *b, lapack_complex_float *b_i,
00059                            lapack_int info, lapack_int info_i, lapack_int ldb,
00060                            lapack_int nrhs );
00061 
00062 int main(void)
00063 {
00064     /* Local scalars */
00065     char uplo, uplo_i;
00066     lapack_int n, n_i;
00067     lapack_int nrhs, nrhs_i;
00068     lapack_int ldb, ldb_i;
00069     lapack_int ldb_r;
00070     lapack_int info, info_i;
00071     lapack_int i;
00072     int failed;
00073 
00074     /* Local arrays */
00075     lapack_complex_float *ap = NULL, *ap_i = NULL;
00076     lapack_complex_float *b = NULL, *b_i = NULL;
00077     lapack_complex_float *b_save = NULL;
00078     lapack_complex_float *ap_r = NULL;
00079     lapack_complex_float *b_r = NULL;
00080 
00081     /* Iniitialize the scalar parameters */
00082     init_scalars_cpptrs( &uplo, &n, &nrhs, &ldb );
00083     ldb_r = nrhs+2;
00084     uplo_i = uplo;
00085     n_i = n;
00086     nrhs_i = nrhs;
00087     ldb_i = ldb;
00088 
00089     /* Allocate memory for the LAPACK routine arrays */
00090     ap = (lapack_complex_float *)
00091         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00092     b = (lapack_complex_float *)
00093         LAPACKE_malloc( ldb*nrhs * sizeof(lapack_complex_float) );
00094 
00095     /* Allocate memory for the C interface function arrays */
00096     ap_i = (lapack_complex_float *)
00097         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00098     b_i = (lapack_complex_float *)
00099         LAPACKE_malloc( ldb*nrhs * sizeof(lapack_complex_float) );
00100 
00101     /* Allocate memory for the backup arrays */
00102     b_save = (lapack_complex_float *)
00103         LAPACKE_malloc( ldb*nrhs * sizeof(lapack_complex_float) );
00104 
00105     /* Allocate memory for the row-major arrays */
00106     ap_r = (lapack_complex_float *)
00107         LAPACKE_malloc( n*(n+1)/2 * sizeof(lapack_complex_float) );
00108     b_r = (lapack_complex_float *)
00109         LAPACKE_malloc( n*(nrhs+2) * sizeof(lapack_complex_float) );
00110 
00111     /* Initialize input arrays */
00112     init_ap( (n*(n+1)/2), ap );
00113     init_b( ldb*nrhs, b );
00114 
00115     /* Backup the ouptut arrays */
00116     for( i = 0; i < ldb*nrhs; i++ ) {
00117         b_save[i] = b[i];
00118     }
00119 
00120     /* Call the LAPACK routine */
00121     cpptrs_( &uplo, &n, &nrhs, ap, b, &ldb, &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 < (n*(n+1)/2); i++ ) {
00126         ap_i[i] = ap[i];
00127     }
00128     for( i = 0; i < ldb*nrhs; i++ ) {
00129         b_i[i] = b_save[i];
00130     }
00131     info_i = LAPACKE_cpptrs_work( LAPACK_COL_MAJOR, uplo_i, n_i, nrhs_i, ap_i,
00132                                   b_i, ldb_i );
00133 
00134     failed = compare_cpptrs( b, b_i, info, info_i, ldb, nrhs );
00135     if( failed == 0 ) {
00136         printf( "PASSED: column-major middle-level interface to cpptrs\n" );
00137     } else {
00138         printf( "FAILED: column-major middle-level interface to cpptrs\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 < (n*(n+1)/2); i++ ) {
00144         ap_i[i] = ap[i];
00145     }
00146     for( i = 0; i < ldb*nrhs; i++ ) {
00147         b_i[i] = b_save[i];
00148     }
00149     info_i = LAPACKE_cpptrs( LAPACK_COL_MAJOR, uplo_i, n_i, nrhs_i, ap_i, b_i,
00150                              ldb_i );
00151 
00152     failed = compare_cpptrs( b, b_i, info, info_i, ldb, nrhs );
00153     if( failed == 0 ) {
00154         printf( "PASSED: column-major high-level interface to cpptrs\n" );
00155     } else {
00156         printf( "FAILED: column-major high-level interface to cpptrs\n" );
00157     }
00158 
00159     /* Initialize input data, call the row-major middle-level
00160      * interface to LAPACK routine and check the results */
00161     for( i = 0; i < (n*(n+1)/2); i++ ) {
00162         ap_i[i] = ap[i];
00163     }
00164     for( i = 0; i < ldb*nrhs; i++ ) {
00165         b_i[i] = b_save[i];
00166     }
00167 
00168     LAPACKE_cpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00169     LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, b_i, ldb, b_r, nrhs+2 );
00170     info_i = LAPACKE_cpptrs_work( LAPACK_ROW_MAJOR, uplo_i, n_i, nrhs_i, ap_r,
00171                                   b_r, ldb_r );
00172 
00173     LAPACKE_cge_trans( LAPACK_ROW_MAJOR, n, nrhs, b_r, nrhs+2, b_i, ldb );
00174 
00175     failed = compare_cpptrs( b, b_i, info, info_i, ldb, nrhs );
00176     if( failed == 0 ) {
00177         printf( "PASSED: row-major middle-level interface to cpptrs\n" );
00178     } else {
00179         printf( "FAILED: row-major middle-level interface to cpptrs\n" );
00180     }
00181 
00182     /* Initialize input data, call the row-major high-level
00183      * interface to LAPACK routine and check the results */
00184     for( i = 0; i < (n*(n+1)/2); i++ ) {
00185         ap_i[i] = ap[i];
00186     }
00187     for( i = 0; i < ldb*nrhs; i++ ) {
00188         b_i[i] = b_save[i];
00189     }
00190 
00191     /* Init row_major arrays */
00192     LAPACKE_cpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00193     LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, b_i, ldb, b_r, nrhs+2 );
00194     info_i = LAPACKE_cpptrs( LAPACK_ROW_MAJOR, uplo_i, n_i, nrhs_i, ap_r, b_r,
00195                              ldb_r );
00196 
00197     LAPACKE_cge_trans( LAPACK_ROW_MAJOR, n, nrhs, b_r, nrhs+2, b_i, ldb );
00198 
00199     failed = compare_cpptrs( b, b_i, info, info_i, ldb, nrhs );
00200     if( failed == 0 ) {
00201         printf( "PASSED: row-major high-level interface to cpptrs\n" );
00202     } else {
00203         printf( "FAILED: row-major high-level interface to cpptrs\n" );
00204     }
00205 
00206     /* Release memory */
00207     if( ap != NULL ) {
00208         LAPACKE_free( ap );
00209     }
00210     if( ap_i != NULL ) {
00211         LAPACKE_free( ap_i );
00212     }
00213     if( ap_r != NULL ) {
00214         LAPACKE_free( ap_r );
00215     }
00216     if( b != NULL ) {
00217         LAPACKE_free( b );
00218     }
00219     if( b_i != NULL ) {
00220         LAPACKE_free( b_i );
00221     }
00222     if( b_r != NULL ) {
00223         LAPACKE_free( b_r );
00224     }
00225     if( b_save != NULL ) {
00226         LAPACKE_free( b_save );
00227     }
00228 
00229     return 0;
00230 }
00231 
00232 /* Auxiliary function: cpptrs scalar parameters initialization */
00233 static void init_scalars_cpptrs( char *uplo, lapack_int *n, lapack_int *nrhs,
00234                                  lapack_int *ldb )
00235 {
00236     *uplo = 'L';
00237     *n = 4;
00238     *nrhs = 2;
00239     *ldb = 8;
00240 
00241     return;
00242 }
00243 
00244 /* Auxiliary functions: cpptrs array parameters initialization */
00245 static void init_ap( lapack_int size, lapack_complex_float *ap ) {
00246     lapack_int i;
00247     for( i = 0; i < size; i++ ) {
00248         ap[i] = lapack_make_complex_float( 0.0f, 0.0f );
00249     }
00250     ap[0] = lapack_make_complex_float( 1.797220111e+000, 0.000000000e+000 );
00251     ap[1] = lapack_make_complex_float( 8.401864767e-001, 1.068316579e+000 );
00252     ap[2] = lapack_make_complex_float( 1.057188272e+000, -4.673885107e-001 );
00253     ap[3] = lapack_make_complex_float( 2.336942554e-001, -1.391037226e+000 );
00254     ap[4] = lapack_make_complex_float( 1.316353440e+000, 0.000000000e+000 );
00255     ap[5] = lapack_make_complex_float( -4.701749682e-001, 3.130658865e-001 );
00256     ap[6] = lapack_make_complex_float( 8.335255831e-002, 3.676066920e-002 );
00257     ap[7] = lapack_make_complex_float( 1.560392976e+000, 0.000000000e+000 );
00258     ap[8] = lapack_make_complex_float( 9.359616637e-001, 9.899691939e-001 );
00259     ap[9] = lapack_make_complex_float( 6.603332758e-001, 0.000000000e+000 );
00260 }
00261 static void init_b( lapack_int size, lapack_complex_float *b ) {
00262     lapack_int i;
00263     for( i = 0; i < size; i++ ) {
00264         b[i] = lapack_make_complex_float( 0.0f, 0.0f );
00265     }
00266     b[0] = lapack_make_complex_float( 3.930000067e+000, -6.139999866e+000 );
00267     b[8] = lapack_make_complex_float( 1.480000019e+000, 6.579999924e+000 );
00268     b[1] = lapack_make_complex_float( 6.170000076e+000, 9.420000076e+000 );
00269     b[9] = lapack_make_complex_float( 4.650000095e+000, -4.750000000e+000 );
00270     b[2] = lapack_make_complex_float( -7.170000076e+000, -2.182999992e+001 );
00271     b[10] = lapack_make_complex_float( -4.909999847e+000, 2.289999962e+000 );
00272     b[3] = lapack_make_complex_float( 1.990000010e+000, -1.438000011e+001 );
00273     b[11] = lapack_make_complex_float( 7.639999866e+000, -1.078999996e+001 );
00274 }
00275 
00276 /* Auxiliary function: C interface to cpptrs results check */
00277 /* Return value: 0 - test is passed, non-zero - test is failed */
00278 static int compare_cpptrs( lapack_complex_float *b, lapack_complex_float *b_i,
00279                            lapack_int info, lapack_int info_i, lapack_int ldb,
00280                            lapack_int nrhs )
00281 {
00282     lapack_int i;
00283     int failed = 0;
00284     for( i = 0; i < ldb*nrhs; i++ ) {
00285         failed += compare_complex_floats(b[i],b_i[i]);
00286     }
00287     failed += (info == info_i) ? 0 : 1;
00288     if( info != 0 || info_i != 0 ) {
00289         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00290     }
00291 
00292     return failed;
00293 }


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