cppcon_1.c
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00002   Copyright (c) 2010, Intel Corp.
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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 * cppcon_1 is the test program for the C interface to LAPACK
00036 * routine cppcon
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_cppcon( char *uplo, lapack_int *n, float *anorm );
00055 static void init_ap( lapack_int size, lapack_complex_float *ap );
00056 static void init_work( lapack_int size, lapack_complex_float *work );
00057 static void init_rwork( lapack_int size, float *rwork );
00058 static int compare_cppcon( float rcond, float rcond_i, lapack_int info,
00059                            lapack_int info_i );
00060 
00061 int main(void)
00062 {
00063     /* Local scalars */
00064     char uplo, uplo_i;
00065     lapack_int n, n_i;
00066     float anorm, anorm_i;
00067     float rcond, rcond_i;
00068     lapack_int info, info_i;
00069     lapack_int i;
00070     int failed;
00071 
00072     /* Local arrays */
00073     lapack_complex_float *ap = NULL, *ap_i = NULL;
00074     lapack_complex_float *work = NULL, *work_i = NULL;
00075     float *rwork = NULL, *rwork_i = NULL;
00076     lapack_complex_float *ap_r = NULL;
00077 
00078     /* Iniitialize the scalar parameters */
00079     init_scalars_cppcon( &uplo, &n, &anorm );
00080     uplo_i = uplo;
00081     n_i = n;
00082     anorm_i = anorm;
00083 
00084     /* Allocate memory for the LAPACK routine arrays */
00085     ap = (lapack_complex_float *)
00086         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00087     work = (lapack_complex_float *)
00088         LAPACKE_malloc( 2*n * sizeof(lapack_complex_float) );
00089     rwork = (float *)LAPACKE_malloc( n * sizeof(float) );
00090 
00091     /* Allocate memory for the C interface function arrays */
00092     ap_i = (lapack_complex_float *)
00093         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00094     work_i = (lapack_complex_float *)
00095         LAPACKE_malloc( 2*n * sizeof(lapack_complex_float) );
00096     rwork_i = (float *)LAPACKE_malloc( n * sizeof(float) );
00097 
00098     /* Allocate memory for the row-major arrays */
00099     ap_r = (lapack_complex_float *)
00100         LAPACKE_malloc( n*(n+1)/2 * sizeof(lapack_complex_float) );
00101 
00102     /* Initialize input arrays */
00103     init_ap( (n*(n+1)/2), ap );
00104     init_work( 2*n, work );
00105     init_rwork( n, rwork );
00106 
00107     /* Call the LAPACK routine */
00108     cppcon_( &uplo, &n, ap, &anorm, &rcond, work, rwork, &info );
00109 
00110     /* Initialize input data, call the column-major middle-level
00111      * interface to LAPACK routine and check the results */
00112     for( i = 0; i < (n*(n+1)/2); i++ ) {
00113         ap_i[i] = ap[i];
00114     }
00115     for( i = 0; i < 2*n; i++ ) {
00116         work_i[i] = work[i];
00117     }
00118     for( i = 0; i < n; i++ ) {
00119         rwork_i[i] = rwork[i];
00120     }
00121     info_i = LAPACKE_cppcon_work( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i, anorm_i,
00122                                   &rcond_i, work_i, rwork_i );
00123 
00124     failed = compare_cppcon( rcond, rcond_i, info, info_i );
00125     if( failed == 0 ) {
00126         printf( "PASSED: column-major middle-level interface to cppcon\n" );
00127     } else {
00128         printf( "FAILED: column-major middle-level interface to cppcon\n" );
00129     }
00130 
00131     /* Initialize input data, call the column-major high-level
00132      * interface to LAPACK routine and check the results */
00133     for( i = 0; i < (n*(n+1)/2); i++ ) {
00134         ap_i[i] = ap[i];
00135     }
00136     for( i = 0; i < 2*n; i++ ) {
00137         work_i[i] = work[i];
00138     }
00139     for( i = 0; i < n; i++ ) {
00140         rwork_i[i] = rwork[i];
00141     }
00142     info_i = LAPACKE_cppcon( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i, anorm_i,
00143                              &rcond_i );
00144 
00145     failed = compare_cppcon( rcond, rcond_i, info, info_i );
00146     if( failed == 0 ) {
00147         printf( "PASSED: column-major high-level interface to cppcon\n" );
00148     } else {
00149         printf( "FAILED: column-major high-level interface to cppcon\n" );
00150     }
00151 
00152     /* Initialize input data, call the row-major middle-level
00153      * interface to LAPACK routine and check the results */
00154     for( i = 0; i < (n*(n+1)/2); i++ ) {
00155         ap_i[i] = ap[i];
00156     }
00157     for( i = 0; i < 2*n; i++ ) {
00158         work_i[i] = work[i];
00159     }
00160     for( i = 0; i < n; i++ ) {
00161         rwork_i[i] = rwork[i];
00162     }
00163 
00164     LAPACKE_cpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00165     info_i = LAPACKE_cppcon_work( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r, anorm_i,
00166                                   &rcond_i, work_i, rwork_i );
00167 
00168     failed = compare_cppcon( rcond, rcond_i, info, info_i );
00169     if( failed == 0 ) {
00170         printf( "PASSED: row-major middle-level interface to cppcon\n" );
00171     } else {
00172         printf( "FAILED: row-major middle-level interface to cppcon\n" );
00173     }
00174 
00175     /* Initialize input data, call the row-major high-level
00176      * interface to LAPACK routine and check the results */
00177     for( i = 0; i < (n*(n+1)/2); i++ ) {
00178         ap_i[i] = ap[i];
00179     }
00180     for( i = 0; i < 2*n; i++ ) {
00181         work_i[i] = work[i];
00182     }
00183     for( i = 0; i < n; i++ ) {
00184         rwork_i[i] = rwork[i];
00185     }
00186 
00187     /* Init row_major arrays */
00188     LAPACKE_cpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00189     info_i = LAPACKE_cppcon( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r, anorm_i,
00190                              &rcond_i );
00191 
00192     failed = compare_cppcon( rcond, rcond_i, info, info_i );
00193     if( failed == 0 ) {
00194         printf( "PASSED: row-major high-level interface to cppcon\n" );
00195     } else {
00196         printf( "FAILED: row-major high-level interface to cppcon\n" );
00197     }
00198 
00199     /* Release memory */
00200     if( ap != NULL ) {
00201         LAPACKE_free( ap );
00202     }
00203     if( ap_i != NULL ) {
00204         LAPACKE_free( ap_i );
00205     }
00206     if( ap_r != NULL ) {
00207         LAPACKE_free( ap_r );
00208     }
00209     if( work != NULL ) {
00210         LAPACKE_free( work );
00211     }
00212     if( work_i != NULL ) {
00213         LAPACKE_free( work_i );
00214     }
00215     if( rwork != NULL ) {
00216         LAPACKE_free( rwork );
00217     }
00218     if( rwork_i != NULL ) {
00219         LAPACKE_free( rwork_i );
00220     }
00221 
00222     return 0;
00223 }
00224 
00225 /* Auxiliary function: cppcon scalar parameters initialization */
00226 static void init_scalars_cppcon( char *uplo, lapack_int *n, float *anorm )
00227 {
00228     *uplo = 'L';
00229     *n = 4;
00230     *anorm = 1.096735668e+001;
00231 
00232     return;
00233 }
00234 
00235 /* Auxiliary functions: cppcon array parameters initialization */
00236 static void init_ap( lapack_int size, lapack_complex_float *ap ) {
00237     lapack_int i;
00238     for( i = 0; i < size; i++ ) {
00239         ap[i] = lapack_make_complex_float( 0.0f, 0.0f );
00240     }
00241     ap[0] = lapack_make_complex_float( 1.797220111e+000, 0.000000000e+000 );
00242     ap[1] = lapack_make_complex_float( 8.401864767e-001, 1.068316579e+000 );
00243     ap[2] = lapack_make_complex_float( 1.057188272e+000, -4.673885107e-001 );
00244     ap[3] = lapack_make_complex_float( 2.336942554e-001, -1.391037226e+000 );
00245     ap[4] = lapack_make_complex_float( 1.316353440e+000, 0.000000000e+000 );
00246     ap[5] = lapack_make_complex_float( -4.701749682e-001, 3.130658865e-001 );
00247     ap[6] = lapack_make_complex_float( 8.335255831e-002, 3.676066920e-002 );
00248     ap[7] = lapack_make_complex_float( 1.560392976e+000, 0.000000000e+000 );
00249     ap[8] = lapack_make_complex_float( 9.359616637e-001, 9.899691939e-001 );
00250     ap[9] = lapack_make_complex_float( 6.603332758e-001, 0.000000000e+000 );
00251 }
00252 static void init_work( lapack_int size, lapack_complex_float *work ) {
00253     lapack_int i;
00254     for( i = 0; i < size; i++ ) {
00255         work[i] = lapack_make_complex_float( 0.0f, 0.0f );
00256     }
00257 }
00258 static void init_rwork( lapack_int size, float *rwork ) {
00259     lapack_int i;
00260     for( i = 0; i < size; i++ ) {
00261         rwork[i] = 0;
00262     }
00263 }
00264 
00265 /* Auxiliary function: C interface to cppcon results check */
00266 /* Return value: 0 - test is passed, non-zero - test is failed */
00267 static int compare_cppcon( float rcond, float rcond_i, lapack_int info,
00268                            lapack_int info_i )
00269 {
00270     int failed = 0;
00271     failed += compare_floats(rcond,rcond_i);
00272     failed += (info == info_i) ? 0 : 1;
00273     if( info != 0 || info_i != 0 ) {
00274         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00275     }
00276 
00277     return failed;
00278 }


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