dtptri_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 * dtptri_1 is the test program for the C interface to LAPACK
00036 * routine dtptri
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_dtptri( char *uplo, char *diag, lapack_int *n );
00055 static void init_ap( lapack_int size, double *ap );
00056 static int compare_dtptri( double *ap, double *ap_i, lapack_int info,
00057                            lapack_int info_i, lapack_int n );
00058 
00059 int main(void)
00060 {
00061     /* Local scalars */
00062     char uplo, uplo_i;
00063     char diag, diag_i;
00064     lapack_int n, n_i;
00065     lapack_int info, info_i;
00066     lapack_int i;
00067     int failed;
00068 
00069     /* Local arrays */
00070     double *ap = NULL, *ap_i = NULL;
00071     double *ap_save = NULL;
00072     double *ap_r = NULL;
00073 
00074     /* Iniitialize the scalar parameters */
00075     init_scalars_dtptri( &uplo, &diag, &n );
00076     uplo_i = uplo;
00077     diag_i = diag;
00078     n_i = n;
00079 
00080     /* Allocate memory for the LAPACK routine arrays */
00081     ap = (double *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(double) );
00082 
00083     /* Allocate memory for the C interface function arrays */
00084     ap_i = (double *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(double) );
00085 
00086     /* Allocate memory for the backup arrays */
00087     ap_save = (double *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(double) );
00088 
00089     /* Allocate memory for the row-major arrays */
00090     ap_r = (double *)LAPACKE_malloc( n*(n+1)/2 * sizeof(double) );
00091 
00092     /* Initialize input arrays */
00093     init_ap( (n*(n+1)/2), ap );
00094 
00095     /* Backup the ouptut arrays */
00096     for( i = 0; i < (n*(n+1)/2); i++ ) {
00097         ap_save[i] = ap[i];
00098     }
00099 
00100     /* Call the LAPACK routine */
00101     dtptri_( &uplo, &diag, &n, ap, &info );
00102 
00103     /* Initialize input data, call the column-major middle-level
00104      * interface to LAPACK routine and check the results */
00105     for( i = 0; i < (n*(n+1)/2); i++ ) {
00106         ap_i[i] = ap_save[i];
00107     }
00108     info_i = LAPACKE_dtptri_work( LAPACK_COL_MAJOR, uplo_i, diag_i, n_i, ap_i );
00109 
00110     failed = compare_dtptri( ap, ap_i, info, info_i, n );
00111     if( failed == 0 ) {
00112         printf( "PASSED: column-major middle-level interface to dtptri\n" );
00113     } else {
00114         printf( "FAILED: column-major middle-level interface to dtptri\n" );
00115     }
00116 
00117     /* Initialize input data, call the column-major high-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     info_i = LAPACKE_dtptri( LAPACK_COL_MAJOR, uplo_i, diag_i, n_i, ap_i );
00123 
00124     failed = compare_dtptri( ap, ap_i, info, info_i, n );
00125     if( failed == 0 ) {
00126         printf( "PASSED: column-major high-level interface to dtptri\n" );
00127     } else {
00128         printf( "FAILED: column-major high-level interface to dtptri\n" );
00129     }
00130 
00131     /* Initialize input data, call the row-major middle-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_save[i];
00135     }
00136 
00137     LAPACKE_dpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00138     info_i = LAPACKE_dtptri_work( LAPACK_ROW_MAJOR, uplo_i, diag_i, n_i, ap_r );
00139 
00140     LAPACKE_dpp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00141 
00142     failed = compare_dtptri( ap, ap_i, info, info_i, n );
00143     if( failed == 0 ) {
00144         printf( "PASSED: row-major middle-level interface to dtptri\n" );
00145     } else {
00146         printf( "FAILED: row-major middle-level interface to dtptri\n" );
00147     }
00148 
00149     /* Initialize input data, call the row-major high-level
00150      * interface to LAPACK routine and check the results */
00151     for( i = 0; i < (n*(n+1)/2); i++ ) {
00152         ap_i[i] = ap_save[i];
00153     }
00154 
00155     /* Init row_major arrays */
00156     LAPACKE_dpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00157     info_i = LAPACKE_dtptri( LAPACK_ROW_MAJOR, uplo_i, diag_i, n_i, ap_r );
00158 
00159     LAPACKE_dpp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00160 
00161     failed = compare_dtptri( ap, ap_i, info, info_i, n );
00162     if( failed == 0 ) {
00163         printf( "PASSED: row-major high-level interface to dtptri\n" );
00164     } else {
00165         printf( "FAILED: row-major high-level interface to dtptri\n" );
00166     }
00167 
00168     /* Release memory */
00169     if( ap != NULL ) {
00170         LAPACKE_free( ap );
00171     }
00172     if( ap_i != NULL ) {
00173         LAPACKE_free( ap_i );
00174     }
00175     if( ap_r != NULL ) {
00176         LAPACKE_free( ap_r );
00177     }
00178     if( ap_save != NULL ) {
00179         LAPACKE_free( ap_save );
00180     }
00181 
00182     return 0;
00183 }
00184 
00185 /* Auxiliary function: dtptri scalar parameters initialization */
00186 static void init_scalars_dtptri( char *uplo, char *diag, lapack_int *n )
00187 {
00188     *uplo = 'L';
00189     *diag = 'N';
00190     *n = 4;
00191 
00192     return;
00193 }
00194 
00195 /* Auxiliary functions: dtptri array parameters initialization */
00196 static void init_ap( lapack_int size, double *ap ) {
00197     lapack_int i;
00198     for( i = 0; i < size; i++ ) {
00199         ap[i] = 0;
00200     }
00201     ap[0] = 4.29999999999999980e+000;
00202     ap[1] = -3.96000000000000000e+000;
00203     ap[2] = 4.00000000000000020e-001;
00204     ap[3] = -2.70000000000000020e-001;
00205     ap[4] = -4.87000000000000010e+000;
00206     ap[5] = 3.10000000000000000e-001;
00207     ap[6] = 7.00000000000000070e-002;
00208     ap[7] = -8.01999999999999960e+000;
00209     ap[8] = -5.95000000000000020e+000;
00210     ap[9] = 1.20000000000000000e-001;
00211 }
00212 
00213 /* Auxiliary function: C interface to dtptri results check */
00214 /* Return value: 0 - test is passed, non-zero - test is failed */
00215 static int compare_dtptri( double *ap, double *ap_i, lapack_int info,
00216                            lapack_int info_i, lapack_int n )
00217 {
00218     lapack_int i;
00219     int failed = 0;
00220     for( i = 0; i < (n*(n+1)/2); i++ ) {
00221         failed += compare_doubles(ap[i],ap_i[i]);
00222     }
00223     failed += (info == info_i) ? 0 : 1;
00224     if( info != 0 || info_i != 0 ) {
00225         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00226     }
00227 
00228     return failed;
00229 }


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