spptrf_1.c
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00001 /*****************************************************************************
00002   Copyright (c) 2010, Intel Corp.
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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 * spptrf_1 is the test program for the C interface to LAPACK
00036 * routine spptrf
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_spptrf( char *uplo, lapack_int *n );
00055 static void init_ap( lapack_int size, float *ap );
00056 static int compare_spptrf( float *ap, float *ap_i, lapack_int info,
00057                            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     float *ap = NULL, *ap_i = NULL;
00070     float *ap_save = NULL;
00071     float *ap_r = NULL;
00072 
00073     /* Iniitialize the scalar parameters */
00074     init_scalars_spptrf( &uplo, &n );
00075     uplo_i = uplo;
00076     n_i = n;
00077 
00078     /* Allocate memory for the LAPACK routine arrays */
00079     ap = (float *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(float) );
00080 
00081     /* Allocate memory for the C interface function arrays */
00082     ap_i = (float *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(float) );
00083 
00084     /* Allocate memory for the backup arrays */
00085     ap_save = (float *)LAPACKE_malloc( ((n*(n+1)/2)) * sizeof(float) );
00086 
00087     /* Allocate memory for the row-major arrays */
00088     ap_r = (float *)LAPACKE_malloc( n*(n+1)/2 * sizeof(float) );
00089 
00090     /* Initialize input arrays */
00091     init_ap( (n*(n+1)/2), ap );
00092 
00093     /* Backup the ouptut arrays */
00094     for( i = 0; i < (n*(n+1)/2); i++ ) {
00095         ap_save[i] = ap[i];
00096     }
00097 
00098     /* Call the LAPACK routine */
00099     spptrf_( &uplo, &n, ap, &info );
00100 
00101     /* Initialize input data, call the column-major middle-level
00102      * interface to LAPACK routine and check the results */
00103     for( i = 0; i < (n*(n+1)/2); i++ ) {
00104         ap_i[i] = ap_save[i];
00105     }
00106     info_i = LAPACKE_spptrf_work( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i );
00107 
00108     failed = compare_spptrf( ap, ap_i, info, info_i, n );
00109     if( failed == 0 ) {
00110         printf( "PASSED: column-major middle-level interface to spptrf\n" );
00111     } else {
00112         printf( "FAILED: column-major middle-level interface to spptrf\n" );
00113     }
00114 
00115     /* Initialize input data, call the column-major high-level
00116      * interface to LAPACK routine and check the results */
00117     for( i = 0; i < (n*(n+1)/2); i++ ) {
00118         ap_i[i] = ap_save[i];
00119     }
00120     info_i = LAPACKE_spptrf( LAPACK_COL_MAJOR, uplo_i, n_i, ap_i );
00121 
00122     failed = compare_spptrf( ap, ap_i, info, info_i, n );
00123     if( failed == 0 ) {
00124         printf( "PASSED: column-major high-level interface to spptrf\n" );
00125     } else {
00126         printf( "FAILED: column-major high-level interface to spptrf\n" );
00127     }
00128 
00129     /* Initialize input data, call the row-major middle-level
00130      * interface to LAPACK routine and check the results */
00131     for( i = 0; i < (n*(n+1)/2); i++ ) {
00132         ap_i[i] = ap_save[i];
00133     }
00134 
00135     LAPACKE_spp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00136     info_i = LAPACKE_spptrf_work( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r );
00137 
00138     LAPACKE_spp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00139 
00140     failed = compare_spptrf( ap, ap_i, info, info_i, n );
00141     if( failed == 0 ) {
00142         printf( "PASSED: row-major middle-level interface to spptrf\n" );
00143     } else {
00144         printf( "FAILED: row-major middle-level interface to spptrf\n" );
00145     }
00146 
00147     /* Initialize input data, call the row-major high-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_save[i];
00151     }
00152 
00153     /* Init row_major arrays */
00154     LAPACKE_spp_trans( LAPACK_COL_MAJOR, uplo, n, ap_i, ap_r );
00155     info_i = LAPACKE_spptrf( LAPACK_ROW_MAJOR, uplo_i, n_i, ap_r );
00156 
00157     LAPACKE_spp_trans( LAPACK_ROW_MAJOR, uplo, n, ap_r, ap_i );
00158 
00159     failed = compare_spptrf( ap, ap_i, info, info_i, n );
00160     if( failed == 0 ) {
00161         printf( "PASSED: row-major high-level interface to spptrf\n" );
00162     } else {
00163         printf( "FAILED: row-major high-level interface to spptrf\n" );
00164     }
00165 
00166     /* Release memory */
00167     if( ap != NULL ) {
00168         LAPACKE_free( ap );
00169     }
00170     if( ap_i != NULL ) {
00171         LAPACKE_free( ap_i );
00172     }
00173     if( ap_r != NULL ) {
00174         LAPACKE_free( ap_r );
00175     }
00176     if( ap_save != NULL ) {
00177         LAPACKE_free( ap_save );
00178     }
00179 
00180     return 0;
00181 }
00182 
00183 /* Auxiliary function: spptrf scalar parameters initialization */
00184 static void init_scalars_spptrf( char *uplo, lapack_int *n )
00185 {
00186     *uplo = 'L';
00187     *n = 4;
00188 
00189     return;
00190 }
00191 
00192 /* Auxiliary functions: spptrf array parameters initialization */
00193 static void init_ap( lapack_int size, float *ap ) {
00194     lapack_int i;
00195     for( i = 0; i < size; i++ ) {
00196         ap[i] = 0;
00197     }
00198     ap[0] = 4.159999847e+000;
00199     ap[1] = -3.119999886e+000;
00200     ap[2] = 5.600000024e-001;
00201     ap[3] = -1.000000015e-001;
00202     ap[4] = 5.030000210e+000;
00203     ap[5] = -8.299999833e-001;
00204     ap[6] = 1.179999948e+000;
00205     ap[7] = 7.599999905e-001;
00206     ap[8] = 3.400000036e-001;
00207     ap[9] = 1.179999948e+000;
00208 }
00209 
00210 /* Auxiliary function: C interface to spptrf results check */
00211 /* Return value: 0 - test is passed, non-zero - test is failed */
00212 static int compare_spptrf( float *ap, float *ap_i, lapack_int info,
00213                            lapack_int info_i, lapack_int n )
00214 {
00215     lapack_int i;
00216     int failed = 0;
00217     for( i = 0; i < (n*(n+1)/2); i++ ) {
00218         failed += compare_floats(ap[i],ap_i[i]);
00219     }
00220     failed += (info == info_i) ? 0 : 1;
00221     if( info != 0 || info_i != 0 ) {
00222         printf( "info=%d, info_i=%d\n",(int)info,(int)info_i );
00223     }
00224 
00225     return failed;
00226 }


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