chptrf_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 * chptrf_1 is the test program for the C interface to LAPACK
00036 * routine chptrf
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_chptrf( char *uplo, lapack_int *n );
00055 static void init_ap( lapack_int size, lapack_complex_float *ap );
00056 static void init_ipiv( lapack_int size, lapack_int *ipiv );
00057 static int compare_chptrf( lapack_complex_float *ap, lapack_complex_float *ap_i,
00058                            lapack_int *ipiv, lapack_int *ipiv_i,
00059                            lapack_int info, lapack_int info_i, lapack_int n );
00060 
00061 int main(void)
00062 {
00063     /* Local scalars */
00064     char uplo, uplo_i;
00065     lapack_int n, n_i;
00066     lapack_int info, info_i;
00067     lapack_int i;
00068     int failed;
00069 
00070     /* Local arrays */
00071     lapack_complex_float *ap = NULL, *ap_i = NULL;
00072     lapack_int *ipiv = NULL, *ipiv_i = NULL;
00073     lapack_complex_float *ap_save = NULL;
00074     lapack_int *ipiv_save = NULL;
00075     lapack_complex_float *ap_r = NULL;
00076 
00077     /* Iniitialize the scalar parameters */
00078     init_scalars_chptrf( &uplo, &n );
00079     uplo_i = uplo;
00080     n_i = n;
00081 
00082     /* Allocate memory for the LAPACK routine arrays */
00083     ap = (lapack_complex_float *)
00084         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00085     ipiv = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00086 
00087     /* Allocate memory for the C interface function arrays */
00088     ap_i = (lapack_complex_float *)
00089         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00090     ipiv_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00091 
00092     /* Allocate memory for the backup arrays */
00093     ap_save = (lapack_complex_float *)
00094         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00095     ipiv_save = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
00096 
00097     /* Allocate memory for the row-major arrays */
00098     ap_r = (lapack_complex_float *)
00099         LAPACKE_malloc( n*(n+1)/2 * sizeof(lapack_complex_float) );
00100 
00101     /* Initialize input arrays */
00102     init_ap( (n*(n+1)/2), ap );
00103     init_ipiv( n, ipiv );
00104 
00105     /* Backup the ouptut arrays */
00106     for( i = 0; i < (n*(n+1)/2); i++ ) {
00107         ap_save[i] = ap[i];
00108     }
00109     for( i = 0; i < n; i++ ) {
00110         ipiv_save[i] = ipiv[i];
00111     }
00112 
00113     /* Call the LAPACK routine */
00114     chptrf_( &uplo, &n, ap, ipiv, &info );
00115 
00116     /* Initialize input data, call the column-major middle-level
00117      * interface to LAPACK routine and check the results */
00118     for( i = 0; i < (n*(n+1)/2); i++ ) {
00119         ap_i[i] = ap_save[i];
00120     }
00121     for( i = 0; i < n; i++ ) {
00122         ipiv_i[i] = ipiv_save[i];
00123     }
00124     info_i = LAPACKE_chptrf_work( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i, ipiv_i );
00125 
00126     failed = compare_chptrf( ap, ap_i, ipiv, ipiv_i, info, info_i, n );
00127     if( failed == 0 ) {
00128         printf( "PASSED: column-major middle-level interface to chptrf\n" );
00129     } else {
00130         printf( "FAILED: column-major middle-level interface to chptrf\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 < (n*(n+1)/2); i++ ) {
00136         ap_i[i] = ap_save[i];
00137     }
00138     for( i = 0; i < n; i++ ) {
00139         ipiv_i[i] = ipiv_save[i];
00140     }
00141     info_i = LAPACKE_chptrf( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i, ipiv_i );
00142 
00143     failed = compare_chptrf( ap, ap_i, ipiv, ipiv_i, info, info_i, n );
00144     if( failed == 0 ) {
00145         printf( "PASSED: column-major high-level interface to chptrf\n" );
00146     } else {
00147         printf( "FAILED: column-major high-level interface to chptrf\n" );
00148     }
00149 
00150     /* Initialize input data, call the row-major middle-level
00151      * interface to LAPACK routine and check the results */
00152     for( i = 0; i < (n*(n+1)/2); i++ ) {
00153         ap_i[i] = ap_save[i];
00154     }
00155     for( i = 0; i < n; i++ ) {
00156         ipiv_i[i] = ipiv_save[i];
00157     }
00158 
00159     LAPACKE_cpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00160     info_i = LAPACKE_chptrf_work( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r, ipiv_i );
00161 
00162     LAPACKE_cpp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00163 
00164     failed = compare_chptrf( ap, ap_i, ipiv, ipiv_i, info, info_i, n );
00165     if( failed == 0 ) {
00166         printf( "PASSED: row-major middle-level interface to chptrf\n" );
00167     } else {
00168         printf( "FAILED: row-major middle-level interface to chptrf\n" );
00169     }
00170 
00171     /* Initialize input data, call the row-major high-level
00172      * interface to LAPACK routine and check the results */
00173     for( i = 0; i < (n*(n+1)/2); i++ ) {
00174         ap_i[i] = ap_save[i];
00175     }
00176     for( i = 0; i < n; i++ ) {
00177         ipiv_i[i] = ipiv_save[i];
00178     }
00179 
00180     /* Init row_major arrays */
00181     LAPACKE_cpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00182     info_i = LAPACKE_chptrf( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r, ipiv_i );
00183 
00184     LAPACKE_cpp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00185 
00186     failed = compare_chptrf( ap, ap_i, ipiv, ipiv_i, info, info_i, n );
00187     if( failed == 0 ) {
00188         printf( "PASSED: row-major high-level interface to chptrf\n" );
00189     } else {
00190         printf( "FAILED: row-major high-level interface to chptrf\n" );
00191     }
00192 
00193     /* Release memory */
00194     if( ap != NULL ) {
00195         LAPACKE_free( ap );
00196     }
00197     if( ap_i != NULL ) {
00198         LAPACKE_free( ap_i );
00199     }
00200     if( ap_r != NULL ) {
00201         LAPACKE_free( ap_r );
00202     }
00203     if( ap_save != NULL ) {
00204         LAPACKE_free( ap_save );
00205     }
00206     if( ipiv != NULL ) {
00207         LAPACKE_free( ipiv );
00208     }
00209     if( ipiv_i != NULL ) {
00210         LAPACKE_free( ipiv_i );
00211     }
00212     if( ipiv_save != NULL ) {
00213         LAPACKE_free( ipiv_save );
00214     }
00215 
00216     return 0;
00217 }
00218 
00219 /* Auxiliary function: chptrf scalar parameters initialization */
00220 static void init_scalars_chptrf( char *uplo, lapack_int *n )
00221 {
00222     *uplo = 'L';
00223     *n = 4;
00224 
00225     return;
00226 }
00227 
00228 /* Auxiliary functions: chptrf array parameters initialization */
00229 static void init_ap( lapack_int size, lapack_complex_float *ap ) {
00230     lapack_int i;
00231     for( i = 0; i < size; i++ ) {
00232         ap[i] = lapack_make_complex_float( 0.0f, 0.0f );
00233     }
00234     ap[0] = lapack_make_complex_float( -1.360000014e+000, 0.000000000e+000 );
00235     ap[1] = lapack_make_complex_float( 1.580000043e+000, -8.999999762e-001 );
00236     ap[2] = lapack_make_complex_float( 2.210000038e+000, 2.099999934e-001 );
00237     ap[3] = lapack_make_complex_float( 3.910000086e+000, -1.500000000e+000 );
00238     ap[4] = lapack_make_complex_float( -8.869999886e+000, 0.000000000e+000 );
00239     ap[5] = lapack_make_complex_float( -1.840000033e+000, 2.999999933e-002 );
00240     ap[6] = lapack_make_complex_float( -1.779999971e+000, -1.179999948e+000 );
00241     ap[7] = lapack_make_complex_float( -4.630000114e+000, 0.000000000e+000 );
00242     ap[8] = lapack_make_complex_float( 1.099999994e-001, -1.099999994e-001 );
00243     ap[9] = lapack_make_complex_float( -1.840000033e+000, 0.000000000e+000 );
00244 }
00245 static void init_ipiv( lapack_int size, lapack_int *ipiv ) {
00246     lapack_int i;
00247     for( i = 0; i < size; i++ ) {
00248         ipiv[i] = 0;
00249     }
00250 }
00251 
00252 /* Auxiliary function: C interface to chptrf results check */
00253 /* Return value: 0 - test is passed, non-zero - test is failed */
00254 static int compare_chptrf( lapack_complex_float *ap, lapack_complex_float *ap_i,
00255                            lapack_int *ipiv, lapack_int *ipiv_i,
00256                            lapack_int info, lapack_int info_i, lapack_int n )
00257 {
00258     lapack_int i;
00259     int failed = 0;
00260     for( i = 0; i < (n*(n+1)/2); i++ ) {
00261         failed += compare_complex_floats(ap[i],ap_i[i]);
00262     }
00263     for( i = 0; i < n; i++ ) {
00264         failed += (ipiv[i] == ipiv_i[i]) ? 0 : 1;
00265     }
00266     failed += (info == info_i) ? 0 : 1;
00267     if( info != 0 || info_i != 0 ) {
00268         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00269     }
00270 
00271     return failed;
00272 }


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