strcon_1.c
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00002   Copyright (c) 2010, Intel Corp.
00003   All rights reserved.
00004 
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00016 
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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 * strcon_1 is the test program for the C interface to LAPACK
00036 * routine strcon
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_strcon( char *norm, char *uplo, char *diag,
00055                                  lapack_int *n, lapack_int *lda );
00056 static void init_a( lapack_int size, float *a );
00057 static void init_work( lapack_int size, float *work );
00058 static void init_iwork( lapack_int size, lapack_int *iwork );
00059 static int compare_strcon( float rcond, float rcond_i, lapack_int info,
00060                            lapack_int info_i );
00061 
00062 int main(void)
00063 {
00064     /* Local scalars */
00065     char norm, norm_i;
00066     char uplo, uplo_i;
00067     char diag, diag_i;
00068     lapack_int n, n_i;
00069     lapack_int lda, lda_i;
00070     lapack_int lda_r;
00071     float rcond, rcond_i;
00072     lapack_int info, info_i;
00073     lapack_int i;
00074     int failed;
00075 
00076     /* Local arrays */
00077     float *a = NULL, *a_i = NULL;
00078     float *work = NULL, *work_i = NULL;
00079     lapack_int *iwork = NULL, *iwork_i = NULL;
00080     float *a_r = NULL;
00081 
00082     /* Iniitialize the scalar parameters */
00083     init_scalars_strcon( &norm, &uplo, &diag, &n, &lda );
00084     lda_r = n+2;
00085     norm_i = norm;
00086     uplo_i = uplo;
00087     diag_i = diag;
00088     n_i = n;
00089     lda_i = lda;
00090 
00091     /* Allocate memory for the LAPACK routine arrays */
00092     a = (float *)LAPACKE_malloc( lda*n * sizeof(float) );
00093     work = (float *)LAPACKE_malloc( 3*n * sizeof(float) );
00094     iwork = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00095 
00096     /* Allocate memory for the C interface function arrays */
00097     a_i = (float *)LAPACKE_malloc( lda*n * sizeof(float) );
00098     work_i = (float *)LAPACKE_malloc( 3*n * sizeof(float) );
00099     iwork_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00100 
00101     /* Allocate memory for the row-major arrays */
00102     a_r = (float *)LAPACKE_malloc( n*(n+2) * sizeof(float) );
00103 
00104     /* Initialize input arrays */
00105     init_a( lda*n, a );
00106     init_work( 3*n, work );
00107     init_iwork( n, iwork );
00108 
00109     /* Call the LAPACK routine */
00110     strcon_( &norm, &uplo, &diag, &n, a, &lda, &rcond, work, iwork, &info );
00111 
00112     /* Initialize input data, call the column-major middle-level
00113      * interface to LAPACK routine and check the results */
00114     for( i = 0; i < lda*n; i++ ) {
00115         a_i[i] = a[i];
00116     }
00117     for( i = 0; i < 3*n; i++ ) {
00118         work_i[i] = work[i];
00119     }
00120     for( i = 0; i < n; i++ ) {
00121         iwork_i[i] = iwork[i];
00122     }
00123     info_i = LAPACKE_strcon_work( LAPACK_COL_MAJOR, norm_i, uplo_i, diag_i, n_i,
00124                                   a_i, lda_i, &rcond_i, work_i, iwork_i );
00125 
00126     failed = compare_strcon( rcond, rcond_i, info, info_i );
00127     if( failed == 0 ) {
00128         printf( "PASSED: column-major middle-level interface to strcon\n" );
00129     } else {
00130         printf( "FAILED: column-major middle-level interface to strcon\n" );
00131     }
00132 
00133     /* Initialize input data, call the column-major high-level
00134      * interface to LAPACK routine and check the results */
00135     for( i = 0; i < lda*n; i++ ) {
00136         a_i[i] = a[i];
00137     }
00138     for( i = 0; i < 3*n; i++ ) {
00139         work_i[i] = work[i];
00140     }
00141     for( i = 0; i < n; i++ ) {
00142         iwork_i[i] = iwork[i];
00143     }
00144     info_i = LAPACKE_strcon( LAPACK_COL_MAJOR, norm_i, uplo_i, diag_i, n_i, a_i,
00145                              lda_i, &rcond_i );
00146 
00147     failed = compare_strcon( rcond, rcond_i, info, info_i );
00148     if( failed == 0 ) {
00149         printf( "PASSED: column-major high-level interface to strcon\n" );
00150     } else {
00151         printf( "FAILED: column-major high-level interface to strcon\n" );
00152     }
00153 
00154     /* Initialize input data, call the row-major middle-level
00155      * interface to LAPACK routine and check the results */
00156     for( i = 0; i < lda*n; i++ ) {
00157         a_i[i] = a[i];
00158     }
00159     for( i = 0; i < 3*n; i++ ) {
00160         work_i[i] = work[i];
00161     }
00162     for( i = 0; i < n; i++ ) {
00163         iwork_i[i] = iwork[i];
00164     }
00165 
00166     LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
00167     info_i = LAPACKE_strcon_work( LAPACK_ROW_MAJOR, norm_i, uplo_i, diag_i, n_i,
00168                                   a_r, lda_r, &rcond_i, work_i, iwork_i );
00169 
00170     failed = compare_strcon( rcond, rcond_i, info, info_i );
00171     if( failed == 0 ) {
00172         printf( "PASSED: row-major middle-level interface to strcon\n" );
00173     } else {
00174         printf( "FAILED: row-major middle-level interface to strcon\n" );
00175     }
00176 
00177     /* Initialize input data, call the row-major high-level
00178      * interface to LAPACK routine and check the results */
00179     for( i = 0; i < lda*n; i++ ) {
00180         a_i[i] = a[i];
00181     }
00182     for( i = 0; i < 3*n; i++ ) {
00183         work_i[i] = work[i];
00184     }
00185     for( i = 0; i < n; i++ ) {
00186         iwork_i[i] = iwork[i];
00187     }
00188 
00189     /* Init row_major arrays */
00190     LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
00191     info_i = LAPACKE_strcon( LAPACK_ROW_MAJOR, norm_i, uplo_i, diag_i, n_i, a_r,
00192                              lda_r, &rcond_i );
00193 
00194     failed = compare_strcon( rcond, rcond_i, info, info_i );
00195     if( failed == 0 ) {
00196         printf( "PASSED: row-major high-level interface to strcon\n" );
00197     } else {
00198         printf( "FAILED: row-major high-level interface to strcon\n" );
00199     }
00200 
00201     /* Release memory */
00202     if( a != NULL ) {
00203         LAPACKE_free( a );
00204     }
00205     if( a_i != NULL ) {
00206         LAPACKE_free( a_i );
00207     }
00208     if( a_r != NULL ) {
00209         LAPACKE_free( a_r );
00210     }
00211     if( work != NULL ) {
00212         LAPACKE_free( work );
00213     }
00214     if( work_i != NULL ) {
00215         LAPACKE_free( work_i );
00216     }
00217     if( iwork != NULL ) {
00218         LAPACKE_free( iwork );
00219     }
00220     if( iwork_i != NULL ) {
00221         LAPACKE_free( iwork_i );
00222     }
00223 
00224     return 0;
00225 }
00226 
00227 /* Auxiliary function: strcon scalar parameters initialization */
00228 static void init_scalars_strcon( char *norm, char *uplo, char *diag,
00229                                  lapack_int *n, lapack_int *lda )
00230 {
00231     *norm = '1';
00232     *uplo = 'L';
00233     *diag = 'N';
00234     *n = 4;
00235     *lda = 8;
00236 
00237     return;
00238 }
00239 
00240 /* Auxiliary functions: strcon array parameters initialization */
00241 static void init_a( lapack_int size, float *a ) {
00242     lapack_int i;
00243     for( i = 0; i < size; i++ ) {
00244         a[i] = 0;
00245     }
00246     a[0] = 4.300000191e+000;  /* a[0,0] */
00247     a[8] = 0.000000000e+000;  /* a[0,1] */
00248     a[16] = 0.000000000e+000;  /* a[0,2] */
00249     a[24] = 0.000000000e+000;  /* a[0,3] */
00250     a[1] = -3.960000038e+000;  /* a[1,0] */
00251     a[9] = -4.869999886e+000;  /* a[1,1] */
00252     a[17] = 0.000000000e+000;  /* a[1,2] */
00253     a[25] = 0.000000000e+000;  /* a[1,3] */
00254     a[2] = 4.000000060e-001;  /* a[2,0] */
00255     a[10] = 3.100000024e-001;  /* a[2,1] */
00256     a[18] = -8.020000458e+000;  /* a[2,2] */
00257     a[26] = 0.000000000e+000;  /* a[2,3] */
00258     a[3] = -2.700000107e-001;  /* a[3,0] */
00259     a[11] = 7.000000030e-002;  /* a[3,1] */
00260     a[19] = -5.949999809e+000;  /* a[3,2] */
00261     a[27] = 1.199999973e-001;  /* a[3,3] */
00262 }
00263 static void init_work( lapack_int size, float *work ) {
00264     lapack_int i;
00265     for( i = 0; i < size; i++ ) {
00266         work[i] = 0;
00267     }
00268 }
00269 static void init_iwork( lapack_int size, lapack_int *iwork ) {
00270     lapack_int i;
00271     for( i = 0; i < size; i++ ) {
00272         iwork[i] = 0;
00273     }
00274 }
00275 
00276 /* Auxiliary function: C interface to strcon results check */
00277 /* Return value: 0 - test is passed, non-zero - test is failed */
00278 static int compare_strcon( float rcond, float rcond_i, lapack_int info,
00279                            lapack_int info_i )
00280 {
00281     int failed = 0;
00282     failed += compare_floats(rcond,rcond_i);
00283     failed += (info == info_i) ? 0 : 1;
00284     if( info != 0 || info_i != 0 ) {
00285         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00286     }
00287 
00288     return failed;
00289 }


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