zsptrf_1.c
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00002   Copyright (c) 2010, Intel Corp.
00003   All rights reserved.
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 * zsptrf_1 is the test program for the C interface to LAPACK
00036 * routine zsptrf
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_zsptrf( char *uplo, lapack_int *n );
00055 static void init_ap( lapack_int size, lapack_complex_double *ap );
00056 static void init_ipiv( lapack_int size, lapack_int *ipiv );
00057 static int compare_zsptrf( lapack_complex_double *ap,
00058                            lapack_complex_double *ap_i, lapack_int *ipiv,
00059                            lapack_int *ipiv_i, lapack_int info,
00060                            lapack_int info_i, 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 info, info_i;
00068     lapack_int i;
00069     int failed;
00070 
00071     /* Local arrays */
00072     lapack_complex_double *ap = NULL, *ap_i = NULL;
00073     lapack_int *ipiv = NULL, *ipiv_i = NULL;
00074     lapack_complex_double *ap_save = NULL;
00075     lapack_int *ipiv_save = NULL;
00076     lapack_complex_double *ap_r = NULL;
00077 
00078     /* Iniitialize the scalar parameters */
00079     init_scalars_zsptrf( &uplo, &n );
00080     uplo_i = uplo;
00081     n_i = n;
00082 
00083     /* Allocate memory for the LAPACK routine arrays */
00084     ap = (lapack_complex_double *)
00085         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_double) );
00086     ipiv = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00087 
00088     /* Allocate memory for the C interface function arrays */
00089     ap_i = (lapack_complex_double *)
00090         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_double) );
00091     ipiv_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00092 
00093     /* Allocate memory for the backup arrays */
00094     ap_save = (lapack_complex_double *)
00095         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_double) );
00096     ipiv_save = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00097 
00098     /* Allocate memory for the row-major arrays */
00099     ap_r = (lapack_complex_double *)
00100         LAPACKE_malloc( n*(n+1)/2 * sizeof(lapack_complex_double) );
00101 
00102     /* Initialize input arrays */
00103     init_ap( (n*(n+1)/2), ap );
00104     init_ipiv( n, ipiv );
00105 
00106     /* Backup the ouptut arrays */
00107     for( i = 0; i < (n*(n+1)/2); i++ ) {
00108         ap_save[i] = ap[i];
00109     }
00110     for( i = 0; i < n; i++ ) {
00111         ipiv_save[i] = ipiv[i];
00112     }
00113 
00114     /* Call the LAPACK routine */
00115     zsptrf_( &uplo, &n, ap, ipiv, &info );
00116 
00117     /* Initialize input data, call the column-major middle-level
00118      * interface to LAPACK routine and check the results */
00119     for( i = 0; i < (n*(n+1)/2); i++ ) {
00120         ap_i[i] = ap_save[i];
00121     }
00122     for( i = 0; i < n; i++ ) {
00123         ipiv_i[i] = ipiv_save[i];
00124     }
00125     info_i = LAPACKE_zsptrf_work( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i, ipiv_i );
00126 
00127     failed = compare_zsptrf( ap, ap_i, ipiv, ipiv_i, info, info_i, n );
00128     if( failed == 0 ) {
00129         printf( "PASSED: column-major middle-level interface to zsptrf\n" );
00130     } else {
00131         printf( "FAILED: column-major middle-level interface to zsptrf\n" );
00132     }
00133 
00134     /* Initialize input data, call the column-major high-level
00135      * interface to LAPACK routine and check the results */
00136     for( i = 0; i < (n*(n+1)/2); i++ ) {
00137         ap_i[i] = ap_save[i];
00138     }
00139     for( i = 0; i < n; i++ ) {
00140         ipiv_i[i] = ipiv_save[i];
00141     }
00142     info_i = LAPACKE_zsptrf( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i, ipiv_i );
00143 
00144     failed = compare_zsptrf( ap, ap_i, ipiv, ipiv_i, info, info_i, n );
00145     if( failed == 0 ) {
00146         printf( "PASSED: column-major high-level interface to zsptrf\n" );
00147     } else {
00148         printf( "FAILED: column-major high-level interface to zsptrf\n" );
00149     }
00150 
00151     /* Initialize input data, call the row-major middle-level
00152      * interface to LAPACK routine and check the results */
00153     for( i = 0; i < (n*(n+1)/2); i++ ) {
00154         ap_i[i] = ap_save[i];
00155     }
00156     for( i = 0; i < n; i++ ) {
00157         ipiv_i[i] = ipiv_save[i];
00158     }
00159 
00160     LAPACKE_zpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00161     info_i = LAPACKE_zsptrf_work( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r, ipiv_i );
00162 
00163     LAPACKE_zpp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00164 
00165     failed = compare_zsptrf( ap, ap_i, ipiv, ipiv_i, info, info_i, n );
00166     if( failed == 0 ) {
00167         printf( "PASSED: row-major middle-level interface to zsptrf\n" );
00168     } else {
00169         printf( "FAILED: row-major middle-level interface to zsptrf\n" );
00170     }
00171 
00172     /* Initialize input data, call the row-major high-level
00173      * interface to LAPACK routine and check the results */
00174     for( i = 0; i < (n*(n+1)/2); i++ ) {
00175         ap_i[i] = ap_save[i];
00176     }
00177     for( i = 0; i < n; i++ ) {
00178         ipiv_i[i] = ipiv_save[i];
00179     }
00180 
00181     /* Init row_major arrays */
00182     LAPACKE_zpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00183     info_i = LAPACKE_zsptrf( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r, ipiv_i );
00184 
00185     LAPACKE_zpp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00186 
00187     failed = compare_zsptrf( ap, ap_i, ipiv, ipiv_i, info, info_i, n );
00188     if( failed == 0 ) {
00189         printf( "PASSED: row-major high-level interface to zsptrf\n" );
00190     } else {
00191         printf( "FAILED: row-major high-level interface to zsptrf\n" );
00192     }
00193 
00194     /* Release memory */
00195     if( ap != NULL ) {
00196         LAPACKE_free( ap );
00197     }
00198     if( ap_i != NULL ) {
00199         LAPACKE_free( ap_i );
00200     }
00201     if( ap_r != NULL ) {
00202         LAPACKE_free( ap_r );
00203     }
00204     if( ap_save != NULL ) {
00205         LAPACKE_free( ap_save );
00206     }
00207     if( ipiv != NULL ) {
00208         LAPACKE_free( ipiv );
00209     }
00210     if( ipiv_i != NULL ) {
00211         LAPACKE_free( ipiv_i );
00212     }
00213     if( ipiv_save != NULL ) {
00214         LAPACKE_free( ipiv_save );
00215     }
00216 
00217     return 0;
00218 }
00219 
00220 /* Auxiliary function: zsptrf scalar parameters initialization */
00221 static void init_scalars_zsptrf( char *uplo, lapack_int *n )
00222 {
00223     *uplo = 'L';
00224     *n = 4;
00225 
00226     return;
00227 }
00228 
00229 /* Auxiliary functions: zsptrf array parameters initialization */
00230 static void init_ap( lapack_int size, lapack_complex_double *ap ) {
00231     lapack_int i;
00232     for( i = 0; i < size; i++ ) {
00233         ap[i] = lapack_make_complex_double( 0.0, 0.0 );
00234     }
00235     ap[0] = lapack_make_complex_double( -3.90000000000000010e-001,
00236                                         -7.09999999999999960e-001 );
00237     ap[1] = lapack_make_complex_double( 5.13999999999999970e+000,
00238                                         -6.40000000000000010e-001 );
00239     ap[2] = lapack_make_complex_double( -7.86000000000000030e+000,
00240                                         -2.96000000000000000e+000 );
00241     ap[3] = lapack_make_complex_double( 3.79999999999999980e+000,
00242                                         9.20000000000000040e-001 );
00243     ap[4] = lapack_make_complex_double( 8.85999999999999940e+000,
00244                                         1.81000000000000010e+000 );
00245     ap[5] = lapack_make_complex_double( -3.52000000000000000e+000,
00246                                         5.79999999999999960e-001 );
00247     ap[6] = lapack_make_complex_double( 5.32000000000000030e+000,
00248                                         -1.59000000000000010e+000 );
00249     ap[7] = lapack_make_complex_double( -2.83000000000000010e+000,
00250                                         -2.99999999999999990e-002 );
00251     ap[8] = lapack_make_complex_double( -1.54000000000000000e+000,
00252                                         -2.85999999999999990e+000 );
00253     ap[9] = lapack_make_complex_double( -5.60000000000000050e-001,
00254                                         1.20000000000000000e-001 );
00255 }
00256 static void init_ipiv( lapack_int size, lapack_int *ipiv ) {
00257     lapack_int i;
00258     for( i = 0; i < size; i++ ) {
00259         ipiv[i] = 0;
00260     }
00261 }
00262 
00263 /* Auxiliary function: C interface to zsptrf results check */
00264 /* Return value: 0 - test is passed, non-zero - test is failed */
00265 static int compare_zsptrf( lapack_complex_double *ap,
00266                            lapack_complex_double *ap_i, lapack_int *ipiv,
00267                            lapack_int *ipiv_i, lapack_int info,
00268                            lapack_int info_i, lapack_int n )
00269 {
00270     lapack_int i;
00271     int failed = 0;
00272     for( i = 0; i < (n*(n+1)/2); i++ ) {
00273         failed += compare_complex_doubles(ap[i],ap_i[i]);
00274     }
00275     for( i = 0; i < n; i++ ) {
00276         failed += (ipiv[i] == ipiv_i[i]) ? 0 : 1;
00277     }
00278     failed += (info == info_i) ? 0 : 1;
00279     if( info != 0 || info_i != 0 ) {
00280         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00281     }
00282 
00283     return failed;
00284 }


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