sppcon_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 * sppcon_1 is the test program for the C interface to LAPACK
00036 * routine sppcon
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_sppcon( char *uplo, lapack_int *n, float *anorm );
00055 static void init_ap( lapack_int size, float *ap );
00056 static void init_work( lapack_int size, float *work );
00057 static void init_iwork( lapack_int size, lapack_int *iwork );
00058 static int compare_sppcon( 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     float *ap = NULL, *ap_i = NULL;
00074     float *work = NULL, *work_i = NULL;
00075     lapack_int *iwork = NULL, *iwork_i = NULL;
00076     float *ap_r = NULL;
00077 
00078     /* Iniitialize the scalar parameters */
00079     init_scalars_sppcon( &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 = (float *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(float) );
00086     work = (float *)LAPACKE_malloc( 3*n * sizeof(float) );
00087     iwork = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00088 
00089     /* Allocate memory for the C interface function arrays */
00090     ap_i = (float *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(float) );
00091     work_i = (float *)LAPACKE_malloc( 3*n * sizeof(float) );
00092     iwork_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00093 
00094     /* Allocate memory for the row-major arrays */
00095     ap_r = (float *)LAPACKE_malloc( n*(n+1)/2 * sizeof(float) );
00096 
00097     /* Initialize input arrays */
00098     init_ap( (n*(n+1)/2), ap );
00099     init_work( 3*n, work );
00100     init_iwork( n, iwork );
00101 
00102     /* Call the LAPACK routine */
00103     sppcon_( &uplo, &n, ap, &anorm, &rcond, work, iwork, &info );
00104 
00105     /* Initialize input data, call the column-major middle-level
00106      * interface to LAPACK routine and check the results */
00107     for( i = 0; i < (n*(n+1)/2); i++ ) {
00108         ap_i[i] = ap[i];
00109     }
00110     for( i = 0; i < 3*n; i++ ) {
00111         work_i[i] = work[i];
00112     }
00113     for( i = 0; i < n; i++ ) {
00114         iwork_i[i] = iwork[i];
00115     }
00116     info_i = LAPACKE_sppcon_work( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i, anorm_i,
00117                                   &rcond_i, work_i, iwork_i );
00118 
00119     failed = compare_sppcon( rcond, rcond_i, info, info_i );
00120     if( failed == 0 ) {
00121         printf( "PASSED: column-major middle-level interface to sppcon\n" );
00122     } else {
00123         printf( "FAILED: column-major middle-level interface to sppcon\n" );
00124     }
00125 
00126     /* Initialize input data, call the column-major high-level
00127      * interface to LAPACK routine and check the results */
00128     for( i = 0; i < (n*(n+1)/2); i++ ) {
00129         ap_i[i] = ap[i];
00130     }
00131     for( i = 0; i < 3*n; i++ ) {
00132         work_i[i] = work[i];
00133     }
00134     for( i = 0; i < n; i++ ) {
00135         iwork_i[i] = iwork[i];
00136     }
00137     info_i = LAPACKE_sppcon( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i, anorm_i,
00138                              &rcond_i );
00139 
00140     failed = compare_sppcon( rcond, rcond_i, info, info_i );
00141     if( failed == 0 ) {
00142         printf( "PASSED: column-major high-level interface to sppcon\n" );
00143     } else {
00144         printf( "FAILED: column-major high-level interface to sppcon\n" );
00145     }
00146 
00147     /* Initialize input data, call the row-major middle-level
00148      * interface to LAPACK routine and check the results */
00149     for( i = 0; i < (n*(n+1)/2); i++ ) {
00150         ap_i[i] = ap[i];
00151     }
00152     for( i = 0; i < 3*n; i++ ) {
00153         work_i[i] = work[i];
00154     }
00155     for( i = 0; i < n; i++ ) {
00156         iwork_i[i] = iwork[i];
00157     }
00158 
00159     LAPACKE_spp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00160     info_i = LAPACKE_sppcon_work( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r, anorm_i,
00161                                   &rcond_i, work_i, iwork_i );
00162 
00163     failed = compare_sppcon( rcond, rcond_i, info, info_i );
00164     if( failed == 0 ) {
00165         printf( "PASSED: row-major middle-level interface to sppcon\n" );
00166     } else {
00167         printf( "FAILED: row-major middle-level interface to sppcon\n" );
00168     }
00169 
00170     /* Initialize input data, call the row-major high-level
00171      * interface to LAPACK routine and check the results */
00172     for( i = 0; i < (n*(n+1)/2); i++ ) {
00173         ap_i[i] = ap[i];
00174     }
00175     for( i = 0; i < 3*n; i++ ) {
00176         work_i[i] = work[i];
00177     }
00178     for( i = 0; i < n; i++ ) {
00179         iwork_i[i] = iwork[i];
00180     }
00181 
00182     /* Init row_major arrays */
00183     LAPACKE_spp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00184     info_i = LAPACKE_sppcon( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r, anorm_i,
00185                              &rcond_i );
00186 
00187     failed = compare_sppcon( rcond, rcond_i, info, info_i );
00188     if( failed == 0 ) {
00189         printf( "PASSED: row-major high-level interface to sppcon\n" );
00190     } else {
00191         printf( "FAILED: row-major high-level interface to sppcon\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( work != NULL ) {
00205         LAPACKE_free( work );
00206     }
00207     if( work_i != NULL ) {
00208         LAPACKE_free( work_i );
00209     }
00210     if( iwork != NULL ) {
00211         LAPACKE_free( iwork );
00212     }
00213     if( iwork_i != NULL ) {
00214         LAPACKE_free( iwork_i );
00215     }
00216 
00217     return 0;
00218 }
00219 
00220 /* Auxiliary function: sppcon scalar parameters initialization */
00221 static void init_scalars_sppcon( char *uplo, lapack_int *n, float *anorm )
00222 {
00223     *uplo = 'L';
00224     *n = 4;
00225     *anorm = 1.015999985e+001;
00226 
00227     return;
00228 }
00229 
00230 /* Auxiliary functions: sppcon array parameters initialization */
00231 static void init_ap( lapack_int size, float *ap ) {
00232     lapack_int i;
00233     for( i = 0; i < size; i++ ) {
00234         ap[i] = 0;
00235     }
00236     ap[0] = 2.039607763e+000;
00237     ap[1] = -1.529705763e+000;
00238     ap[2] = 2.745625973e-001;
00239     ap[3] = -4.902903363e-002;
00240     ap[4] = 1.640122056e+000;
00241     ap[5] = -2.499813884e-001;
00242     ap[6] = 6.737302542e-001;
00243     ap[7] = 7.887488008e-001;
00244     ap[8] = 6.616575122e-001;
00245     ap[9] = 5.346895456e-001;
00246 }
00247 static void init_work( lapack_int size, float *work ) {
00248     lapack_int i;
00249     for( i = 0; i < size; i++ ) {
00250         work[i] = 0;
00251     }
00252 }
00253 static void init_iwork( lapack_int size, lapack_int *iwork ) {
00254     lapack_int i;
00255     for( i = 0; i < size; i++ ) {
00256         iwork[i] = 0;
00257     }
00258 }
00259 
00260 /* Auxiliary function: C interface to sppcon results check */
00261 /* Return value: 0 - test is passed, non-zero - test is failed */
00262 static int compare_sppcon( float rcond, float rcond_i, lapack_int info,
00263                            lapack_int info_i )
00264 {
00265     int failed = 0;
00266     failed += compare_floats(rcond,rcond_i);
00267     failed += (info == info_i) ? 0 : 1;
00268     if( info != 0 || info_i != 0 ) {
00269         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00270     }
00271 
00272     return failed;
00273 }


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