cpptri_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 * cpptri_1 is the test program for the C interface to LAPACK
00036 * routine cpptri
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_cpptri( char *uplo, lapack_int *n );
00055 static void init_ap( lapack_int size, lapack_complex_float *ap );
00056 static int compare_cpptri( lapack_complex_float *ap, lapack_complex_float *ap_i,
00057                            lapack_int info, lapack_int info_i, lapack_int n );
00058 
00059 int main(void)
00060 {
00061     /* Local scalars */
00062     char uplo, uplo_i;
00063     lapack_int n, n_i;
00064     lapack_int info, info_i;
00065     lapack_int i;
00066     int failed;
00067 
00068     /* Local arrays */
00069     lapack_complex_float *ap = NULL, *ap_i = NULL;
00070     lapack_complex_float *ap_save = NULL;
00071     lapack_complex_float *ap_r = NULL;
00072 
00073     /* Iniitialize the scalar parameters */
00074     init_scalars_cpptri( &uplo, &n );
00075     uplo_i = uplo;
00076     n_i = n;
00077 
00078     /* Allocate memory for the LAPACK routine arrays */
00079     ap = (lapack_complex_float *)
00080         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00081 
00082     /* Allocate memory for the C interface function arrays */
00083     ap_i = (lapack_complex_float *)
00084         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00085 
00086     /* Allocate memory for the backup arrays */
00087     ap_save = (lapack_complex_float *)
00088         LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(lapack_complex_float) );
00089 
00090     /* Allocate memory for the row-major arrays */
00091     ap_r = (lapack_complex_float *)
00092         LAPACKE_malloc( n*(n+1)/2 * sizeof(lapack_complex_float) );
00093 
00094     /* Initialize input arrays */
00095     init_ap( (n*(n+1)/2), ap );
00096 
00097     /* Backup the ouptut arrays */
00098     for( i = 0; i < (n*(n+1)/2); i++ ) {
00099         ap_save[i] = ap[i];
00100     }
00101 
00102     /* Call the LAPACK routine */
00103     cpptri_( &uplo, &n, ap, &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_save[i];
00109     }
00110     info_i = LAPACKE_cpptri_work( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i );
00111 
00112     failed = compare_cpptri( ap, ap_i, info, info_i, n );
00113     if( failed == 0 ) {
00114         printf( "PASSED: column-major middle-level interface to cpptri\n" );
00115     } else {
00116         printf( "FAILED: column-major middle-level interface to cpptri\n" );
00117     }
00118 
00119     /* Initialize input data, call the column-major high-level
00120      * interface to LAPACK routine and check the results */
00121     for( i = 0; i < (n*(n+1)/2); i++ ) {
00122         ap_i[i] = ap_save[i];
00123     }
00124     info_i = LAPACKE_cpptri( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i );
00125 
00126     failed = compare_cpptri( ap, ap_i, info, info_i, n );
00127     if( failed == 0 ) {
00128         printf( "PASSED: column-major high-level interface to cpptri\n" );
00129     } else {
00130         printf( "FAILED: column-major high-level interface to cpptri\n" );
00131     }
00132 
00133     /* Initialize input data, call the row-major middle-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 
00139     LAPACKE_cpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00140     info_i = LAPACKE_cpptri_work( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r );
00141 
00142     LAPACKE_cpp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00143 
00144     failed = compare_cpptri( ap, ap_i, info, info_i, n );
00145     if( failed == 0 ) {
00146         printf( "PASSED: row-major middle-level interface to cpptri\n" );
00147     } else {
00148         printf( "FAILED: row-major middle-level interface to cpptri\n" );
00149     }
00150 
00151     /* Initialize input data, call the row-major high-level
00152      * interface to LAPACK routine and check the results */
00153     for( i = 0; i < (n*(n+1)/2); i++ ) {
00154         ap_i[i] = ap_save[i];
00155     }
00156 
00157     /* Init row_major arrays */
00158     LAPACKE_cpp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00159     info_i = LAPACKE_cpptri( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r );
00160 
00161     LAPACKE_cpp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00162 
00163     failed = compare_cpptri( ap, ap_i, info, info_i, n );
00164     if( failed == 0 ) {
00165         printf( "PASSED: row-major high-level interface to cpptri\n" );
00166     } else {
00167         printf( "FAILED: row-major high-level interface to cpptri\n" );
00168     }
00169 
00170     /* Release memory */
00171     if( ap != NULL ) {
00172         LAPACKE_free( ap );
00173     }
00174     if( ap_i != NULL ) {
00175         LAPACKE_free( ap_i );
00176     }
00177     if( ap_r != NULL ) {
00178         LAPACKE_free( ap_r );
00179     }
00180     if( ap_save != NULL ) {
00181         LAPACKE_free( ap_save );
00182     }
00183 
00184     return 0;
00185 }
00186 
00187 /* Auxiliary function: cpptri scalar parameters initialization */
00188 static void init_scalars_cpptri( char *uplo, lapack_int *n )
00189 {
00190     *uplo = 'L';
00191     *n = 4;
00192 
00193     return;
00194 }
00195 
00196 /* Auxiliary functions: cpptri array parameters initialization */
00197 static void init_ap( lapack_int size, lapack_complex_float *ap ) {
00198     lapack_int i;
00199     for( i = 0; i < size; i++ ) {
00200         ap[i] = lapack_make_complex_float( 0.0f, 0.0f );
00201     }
00202     ap[0] = lapack_make_complex_float( 1.797220111e+000, 0.000000000e+000 );
00203     ap[1] = lapack_make_complex_float( 8.401864767e-001, 1.068316579e+000 );
00204     ap[2] = lapack_make_complex_float( 1.057188272e+000, -4.673885107e-001 );
00205     ap[3] = lapack_make_complex_float( 2.336942554e-001, -1.391037226e+000 );
00206     ap[4] = lapack_make_complex_float( 1.316353440e+000, 0.000000000e+000 );
00207     ap[5] = lapack_make_complex_float( -4.701749682e-001, 3.130658865e-001 );
00208     ap[6] = lapack_make_complex_float( 8.335255831e-002, 3.676066920e-002 );
00209     ap[7] = lapack_make_complex_float( 1.560392976e+000, 0.000000000e+000 );
00210     ap[8] = lapack_make_complex_float( 9.359616637e-001, 9.899691939e-001 );
00211     ap[9] = lapack_make_complex_float( 6.603332758e-001, 0.000000000e+000 );
00212 }
00213 
00214 /* Auxiliary function: C interface to cpptri results check */
00215 /* Return value: 0 - test is passed, non-zero - test is failed */
00216 static int compare_cpptri( lapack_complex_float *ap, lapack_complex_float *ap_i,
00217                            lapack_int info, lapack_int info_i, lapack_int n )
00218 {
00219     lapack_int i;
00220     int failed = 0;
00221     for( i = 0; i < (n*(n+1)/2); i++ ) {
00222         failed += compare_complex_floats(ap[i],ap_i[i]);
00223     }
00224     failed += (info == info_i) ? 0 : 1;
00225     if( info != 0 || info_i != 0 ) {
00226         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00227     }
00228 
00229     return failed;
00230 }


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