dtptrs_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 * dtptrs_1 is the test program for the C interface to LAPACK
00036 * routine dtptrs
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_dtptrs( char *uplo, char *trans, char *diag,
00055                                  lapack_int *n, lapack_int *nrhs,
00056                                  lapack_int *ldb );
00057 static void init_ap( lapack_int size, double *ap );
00058 static void init_b( lapack_int size, double *b );
00059 static int compare_dtptrs( double *b, double *b_i, lapack_int info,
00060                            lapack_int info_i, lapack_int ldb, lapack_int nrhs );
00061 
00062 int main(void)
00063 {
00064     /* Local scalars */
00065     char uplo, uplo_i;
00066     char trans, trans_i;
00067     char diag, diag_i;
00068     lapack_int n, n_i;
00069     lapack_int nrhs, nrhs_i;
00070     lapack_int ldb, ldb_i;
00071     lapack_int ldb_r;
00072     lapack_int info, info_i;
00073     lapack_int i;
00074     int failed;
00075 
00076     /* Local arrays */
00077     double *ap = NULL, *ap_i = NULL;
00078     double *b = NULL, *b_i = NULL;
00079     double *b_save = NULL;
00080     double *ap_r = NULL;
00081     double *b_r = NULL;
00082 
00083     /* Iniitialize the scalar parameters */
00084     init_scalars_dtptrs( &uplo, &trans, &diag, &n, &nrhs, &ldb );
00085     ldb_r = nrhs+2;
00086     uplo_i = uplo;
00087     trans_i = trans;
00088     diag_i = diag;
00089     n_i = n;
00090     nrhs_i = nrhs;
00091     ldb_i = ldb;
00092 
00093     /* Allocate memory for the LAPACK routine arrays */
00094     ap = (double *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(double) );
00095     b = (double *)LAPACKE_malloc( ldb*nrhs * sizeof(double) );
00096 
00097     /* Allocate memory for the C interface function arrays */
00098     ap_i = (double *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(double) );
00099     b_i = (double *)LAPACKE_malloc( ldb*nrhs * sizeof(double) );
00100 
00101     /* Allocate memory for the backup arrays */
00102     b_save = (double *)LAPACKE_malloc( ldb*nrhs * sizeof(double) );
00103 
00104     /* Allocate memory for the row-major arrays */
00105     ap_r = (double *)LAPACKE_malloc( n*(n+1)/2 * sizeof(double) );
00106     b_r = (double *)LAPACKE_malloc( n*(nrhs+2) * sizeof(double) );
00107 
00108     /* Initialize input arrays */
00109     init_ap( (n*(n+1)/2), ap );
00110     init_b( ldb*nrhs, b );
00111 
00112     /* Backup the ouptut arrays */
00113     for( i = 0; i < ldb*nrhs; i++ ) {
00114         b_save[i] = b[i];
00115     }
00116 
00117     /* Call the LAPACK routine */
00118     dtptrs_( &uplo, &trans, &diag, &n, &nrhs, ap, b, &ldb, &info );
00119 
00120     /* Initialize input data, call the column-major middle-level
00121      * interface to LAPACK routine and check the results */
00122     for( i = 0; i < (n*(n+1)/2); i++ ) {
00123         ap_i[i] = ap[i];
00124     }
00125     for( i = 0; i < ldb*nrhs; i++ ) {
00126         b_i[i] = b_save[i];
00127     }
00128     info_i = LAPACKE_dtptrs_work( LAPACK_COL_MAJOR, uplo_i, trans_i, diag_i,
00129                                   n_i, nrhs_i, ap_i, b_i, ldb_i );
00130 
00131     failed = compare_dtptrs( b, b_i, info, info_i, ldb, nrhs );
00132     if( failed == 0 ) {
00133         printf( "PASSED: column-major middle-level interface to dtptrs\n" );
00134     } else {
00135         printf( "FAILED: column-major middle-level interface to dtptrs\n" );
00136     }
00137 
00138     /* Initialize input data, call the column-major high-level
00139      * interface to LAPACK routine and check the results */
00140     for( i = 0; i < (n*(n+1)/2); i++ ) {
00141         ap_i[i] = ap[i];
00142     }
00143     for( i = 0; i < ldb*nrhs; i++ ) {
00144         b_i[i] = b_save[i];
00145     }
00146     info_i = LAPACKE_dtptrs( LAPACK_COL_MAJOR, uplo_i, trans_i, diag_i, n_i,
00147                              nrhs_i, ap_i, b_i, ldb_i );
00148 
00149     failed = compare_dtptrs( b, b_i, info, info_i, ldb, nrhs );
00150     if( failed == 0 ) {
00151         printf( "PASSED: column-major high-level interface to dtptrs\n" );
00152     } else {
00153         printf( "FAILED: column-major high-level interface to dtptrs\n" );
00154     }
00155 
00156     /* Initialize input data, call the row-major middle-level
00157      * interface to LAPACK routine and check the results */
00158     for( i = 0; i < (n*(n+1)/2); i++ ) {
00159         ap_i[i] = ap[i];
00160     }
00161     for( i = 0; i < ldb*nrhs; i++ ) {
00162         b_i[i] = b_save[i];
00163     }
00164 
00165     LAPACKE_dpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00166     LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_i, ldb, b_r, nrhs+2 );
00167     info_i = LAPACKE_dtptrs_work( LAPACK_ROW_MAJOR, uplo_i, trans_i, diag_i,
00168                                   n_i, nrhs_i, ap_r, b_r, ldb_r );
00169 
00170     LAPACKE_dge_trans( LAPACK_ROW_MAJOR, n, nrhs, b_r, nrhs+2, b_i, ldb );
00171 
00172     failed = compare_dtptrs( b, b_i, info, info_i, ldb, nrhs );
00173     if( failed == 0 ) {
00174         printf( "PASSED: row-major middle-level interface to dtptrs\n" );
00175     } else {
00176         printf( "FAILED: row-major middle-level interface to dtptrs\n" );
00177     }
00178 
00179     /* Initialize input data, call the row-major high-level
00180      * interface to LAPACK routine and check the results */
00181     for( i = 0; i < (n*(n+1)/2); i++ ) {
00182         ap_i[i] = ap[i];
00183     }
00184     for( i = 0; i < ldb*nrhs; i++ ) {
00185         b_i[i] = b_save[i];
00186     }
00187 
00188     /* Init row_major arrays */
00189     LAPACKE_dpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00190     LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_i, ldb, b_r, nrhs+2 );
00191     info_i = LAPACKE_dtptrs( LAPACK_ROW_MAJOR, uplo_i, trans_i, diag_i, n_i,
00192                              nrhs_i, ap_r, b_r, ldb_r );
00193 
00194     LAPACKE_dge_trans( LAPACK_ROW_MAJOR, n, nrhs, b_r, nrhs+2, b_i, ldb );
00195 
00196     failed = compare_dtptrs( b, b_i, info, info_i, ldb, nrhs );
00197     if( failed == 0 ) {
00198         printf( "PASSED: row-major high-level interface to dtptrs\n" );
00199     } else {
00200         printf( "FAILED: row-major high-level interface to dtptrs\n" );
00201     }
00202 
00203     /* Release memory */
00204     if( ap != NULL ) {
00205         LAPACKE_free( ap );
00206     }
00207     if( ap_i != NULL ) {
00208         LAPACKE_free( ap_i );
00209     }
00210     if( ap_r != NULL ) {
00211         LAPACKE_free( ap_r );
00212     }
00213     if( b != NULL ) {
00214         LAPACKE_free( b );
00215     }
00216     if( b_i != NULL ) {
00217         LAPACKE_free( b_i );
00218     }
00219     if( b_r != NULL ) {
00220         LAPACKE_free( b_r );
00221     }
00222     if( b_save != NULL ) {
00223         LAPACKE_free( b_save );
00224     }
00225 
00226     return 0;
00227 }
00228 
00229 /* Auxiliary function: dtptrs scalar parameters initialization */
00230 static void init_scalars_dtptrs( char *uplo, char *trans, char *diag,
00231                                  lapack_int *n, lapack_int *nrhs,
00232                                  lapack_int *ldb )
00233 {
00234     *uplo = 'L';
00235     *trans = 'N';
00236     *diag = 'N';
00237     *n = 4;
00238     *nrhs = 2;
00239     *ldb = 8;
00240 
00241     return;
00242 }
00243 
00244 /* Auxiliary functions: dtptrs array parameters initialization */
00245 static void init_ap( lapack_int size, double *ap ) {
00246     lapack_int i;
00247     for( i = 0; i < size; i++ ) {
00248         ap[i] = 0;
00249     }
00250     ap[0] = 4.29999999999999980e+000;
00251     ap[1] = -3.96000000000000000e+000;
00252     ap[2] = 4.00000000000000020e-001;
00253     ap[3] = -2.70000000000000020e-001;
00254     ap[4] = -4.87000000000000010e+000;
00255     ap[5] = 3.10000000000000000e-001;
00256     ap[6] = 7.00000000000000070e-002;
00257     ap[7] = -8.01999999999999960e+000;
00258     ap[8] = -5.95000000000000020e+000;
00259     ap[9] = 1.20000000000000000e-001;
00260 }
00261 static void init_b( lapack_int size, double *b ) {
00262     lapack_int i;
00263     for( i = 0; i < size; i++ ) {
00264         b[i] = 0;
00265     }
00266     b[0] = -1.29000000000000000e+001;  /* b[0,0] */
00267     b[8] = -2.15000000000000000e+001;  /* b[0,1] */
00268     b[1] = 1.67500000000000000e+001;  /* b[1,0] */
00269     b[9] = 1.49300000000000000e+001;  /* b[1,1] */
00270     b[2] = -1.75500000000000010e+001;  /* b[2,0] */
00271     b[10] = 6.33000000000000010e+000;  /* b[2,1] */
00272     b[3] = -1.10399999999999990e+001;  /* b[3,0] */
00273     b[11] = 8.08999999999999990e+000;  /* b[3,1] */
00274 }
00275 
00276 /* Auxiliary function: C interface to dtptrs results check */
00277 /* Return value: 0 - test is passed, non-zero - test is failed */
00278 static int compare_dtptrs( double *b, double *b_i, lapack_int info,
00279                            lapack_int info_i, lapack_int ldb, lapack_int nrhs )
00280 {
00281     lapack_int i;
00282     int failed = 0;
00283     for( i = 0; i < ldb*nrhs; i++ ) {
00284         failed += compare_doubles(b[i],b_i[i]);
00285     }
00286     failed += (info == info_i) ? 0 : 1;
00287     if( info != 0 || info_i != 0 ) {
00288         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00289     }
00290 
00291     return failed;
00292 }


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