lapack_int LAPACKE_spbrfs( int matrix_layout, char uplo, lapack_int n, lapack_int kd, lapack_int nrhs, const float* ab, lapack_int ldab, const float* afb, lapack_int ldafb, const float* b, lapack_int ldb, float* x, lapack_int ldx, float* ferr, float* berr ) { lapack_int info = 0; lapack_int* iwork = NULL; float* work = NULL; if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) { LAPACKE_xerbla( "LAPACKE_spbrfs", -1 ); return -1; } #ifndef LAPACK_DISABLE_NAN_CHECK if( LAPACKE_get_nancheck() ) { /* Optionally check input matrices for NaNs */ if( LAPACKE_spb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) { return -6; } if( LAPACKE_spb_nancheck( matrix_layout, uplo, n, kd, afb, ldafb ) ) { return -8; } if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) { return -10; } if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) { return -12; } } #endif /* Allocate memory for working array(s) */ iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) ); if( iwork == NULL ) { info = LAPACK_WORK_MEMORY_ERROR; goto exit_level_0; } work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) ); if( work == NULL ) { info = LAPACK_WORK_MEMORY_ERROR; goto exit_level_1; } /* Call middle-level interface */ info = LAPACKE_spbrfs_work( matrix_layout, uplo, n, kd, nrhs, ab, ldab, afb, ldafb, b, ldb, x, ldx, ferr, berr, work, iwork ); /* Release memory and exit */ LAPACKE_free( work ); exit_level_1: LAPACKE_free( iwork ); exit_level_0: if( info == LAPACK_WORK_MEMORY_ERROR ) { LAPACKE_xerbla( "LAPACKE_spbrfs", info ); } return info; }
int main(void) { /* Local scalars */ char uplo, uplo_i; lapack_int n, n_i; lapack_int kd, kd_i; lapack_int nrhs, nrhs_i; lapack_int ldab, ldab_i; lapack_int ldab_r; lapack_int ldafb, ldafb_i; lapack_int ldafb_r; lapack_int ldb, ldb_i; lapack_int ldb_r; lapack_int ldx, ldx_i; lapack_int ldx_r; lapack_int info, info_i; lapack_int i; int failed; /* Local arrays */ float *ab = NULL, *ab_i = NULL; float *afb = NULL, *afb_i = NULL; float *b = NULL, *b_i = NULL; float *x = NULL, *x_i = NULL; float *ferr = NULL, *ferr_i = NULL; float *berr = NULL, *berr_i = NULL; float *work = NULL, *work_i = NULL; lapack_int *iwork = NULL, *iwork_i = NULL; float *x_save = NULL; float *ferr_save = NULL; float *berr_save = NULL; float *ab_r = NULL; float *afb_r = NULL; float *b_r = NULL; float *x_r = NULL; /* Iniitialize the scalar parameters */ init_scalars_spbrfs( &uplo, &n, &kd, &nrhs, &ldab, &ldafb, &ldb, &ldx ); ldab_r = n+2; ldafb_r = n+2; ldb_r = nrhs+2; ldx_r = nrhs+2; uplo_i = uplo; n_i = n; kd_i = kd; nrhs_i = nrhs; ldab_i = ldab; ldafb_i = ldafb; ldb_i = ldb; ldx_i = ldx; /* Allocate memory for the LAPACK routine arrays */ ab = (float *)LAPACKE_malloc( ldab*n * sizeof(float) ); afb = (float *)LAPACKE_malloc( ldafb*n * sizeof(float) ); b = (float *)LAPACKE_malloc( ldb*nrhs * sizeof(float) ); x = (float *)LAPACKE_malloc( ldx*nrhs * sizeof(float) ); ferr = (float *)LAPACKE_malloc( nrhs * sizeof(float) ); berr = (float *)LAPACKE_malloc( nrhs * sizeof(float) ); work = (float *)LAPACKE_malloc( 3*n * sizeof(float) ); iwork = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) ); /* Allocate memory for the C interface function arrays */ ab_i = (float *)LAPACKE_malloc( ldab*n * sizeof(float) ); afb_i = (float *)LAPACKE_malloc( ldafb*n * sizeof(float) ); b_i = (float *)LAPACKE_malloc( ldb*nrhs * sizeof(float) ); x_i = (float *)LAPACKE_malloc( ldx*nrhs * sizeof(float) ); ferr_i = (float *)LAPACKE_malloc( nrhs * sizeof(float) ); berr_i = (float *)LAPACKE_malloc( nrhs * sizeof(float) ); work_i = (float *)LAPACKE_malloc( 3*n * sizeof(float) ); iwork_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) ); /* Allocate memory for the backup arrays */ x_save = (float *)LAPACKE_malloc( ldx*nrhs * sizeof(float) ); ferr_save = (float *)LAPACKE_malloc( nrhs * sizeof(float) ); berr_save = (float *)LAPACKE_malloc( nrhs * sizeof(float) ); /* Allocate memory for the row-major arrays */ ab_r = (float *)LAPACKE_malloc( (kd+1)*(n+2) * sizeof(float) ); afb_r = (float *)LAPACKE_malloc( (kd+1)*(n+2) * sizeof(float) ); b_r = (float *)LAPACKE_malloc( n*(nrhs+2) * sizeof(float) ); x_r = (float *)LAPACKE_malloc( n*(nrhs+2) * sizeof(float) ); /* Initialize input arrays */ init_ab( ldab*n, ab ); init_afb( ldafb*n, afb ); init_b( ldb*nrhs, b ); init_x( ldx*nrhs, x ); init_ferr( nrhs, ferr ); init_berr( nrhs, berr ); init_work( 3*n, work ); init_iwork( n, iwork ); /* Backup the ouptut arrays */ for( i = 0; i < ldx*nrhs; i++ ) { x_save[i] = x[i]; } for( i = 0; i < nrhs; i++ ) { ferr_save[i] = ferr[i]; } for( i = 0; i < nrhs; i++ ) { berr_save[i] = berr[i]; } /* Call the LAPACK routine */ spbrfs_( &uplo, &n, &kd, &nrhs, ab, &ldab, afb, &ldafb, b, &ldb, x, &ldx, ferr, berr, work, iwork, &info ); /* Initialize input data, call the column-major middle-level * interface to LAPACK routine and check the results */ for( i = 0; i < ldab*n; i++ ) { ab_i[i] = ab[i]; } for( i = 0; i < ldafb*n; i++ ) { afb_i[i] = afb[i]; } for( i = 0; i < ldb*nrhs; i++ ) { b_i[i] = b[i]; } for( i = 0; i < ldx*nrhs; i++ ) { x_i[i] = x_save[i]; } for( i = 0; i < nrhs; i++ ) { ferr_i[i] = ferr_save[i]; } for( i = 0; i < nrhs; i++ ) { berr_i[i] = berr_save[i]; } for( i = 0; i < 3*n; i++ ) { work_i[i] = work[i]; } for( i = 0; i < n; i++ ) { iwork_i[i] = iwork[i]; } info_i = LAPACKE_spbrfs_work( LAPACK_COL_MAJOR, uplo_i, n_i, kd_i, nrhs_i, ab_i, ldab_i, afb_i, ldafb_i, b_i, ldb_i, x_i, ldx_i, ferr_i, berr_i, work_i, iwork_i ); failed = compare_spbrfs( x, x_i, ferr, ferr_i, berr, berr_i, info, info_i, ldx, nrhs ); if( failed == 0 ) { printf( "PASSED: column-major middle-level interface to spbrfs\n" ); } else { printf( "FAILED: column-major middle-level interface to spbrfs\n" ); } /* Initialize input data, call the column-major high-level * interface to LAPACK routine and check the results */ for( i = 0; i < ldab*n; i++ ) { ab_i[i] = ab[i]; } for( i = 0; i < ldafb*n; i++ ) { afb_i[i] = afb[i]; } for( i = 0; i < ldb*nrhs; i++ ) { b_i[i] = b[i]; } for( i = 0; i < ldx*nrhs; i++ ) { x_i[i] = x_save[i]; } for( i = 0; i < nrhs; i++ ) { ferr_i[i] = ferr_save[i]; } for( i = 0; i < nrhs; i++ ) { berr_i[i] = berr_save[i]; } for( i = 0; i < 3*n; i++ ) { work_i[i] = work[i]; } for( i = 0; i < n; i++ ) { iwork_i[i] = iwork[i]; } info_i = LAPACKE_spbrfs( LAPACK_COL_MAJOR, uplo_i, n_i, kd_i, nrhs_i, ab_i, ldab_i, afb_i, ldafb_i, b_i, ldb_i, x_i, ldx_i, ferr_i, berr_i ); failed = compare_spbrfs( x, x_i, ferr, ferr_i, berr, berr_i, info, info_i, ldx, nrhs ); if( failed == 0 ) { printf( "PASSED: column-major high-level interface to spbrfs\n" ); } else { printf( "FAILED: column-major high-level interface to spbrfs\n" ); } /* Initialize input data, call the row-major middle-level * interface to LAPACK routine and check the results */ for( i = 0; i < ldab*n; i++ ) { ab_i[i] = ab[i]; } for( i = 0; i < ldafb*n; i++ ) { afb_i[i] = afb[i]; } for( i = 0; i < ldb*nrhs; i++ ) { b_i[i] = b[i]; } for( i = 0; i < ldx*nrhs; i++ ) { x_i[i] = x_save[i]; } for( i = 0; i < nrhs; i++ ) { ferr_i[i] = ferr_save[i]; } for( i = 0; i < nrhs; i++ ) { berr_i[i] = berr_save[i]; } for( i = 0; i < 3*n; i++ ) { work_i[i] = work[i]; } for( i = 0; i < n; i++ ) { iwork_i[i] = iwork[i]; } LAPACKE_sge_trans( LAPACK_COL_MAJOR, kd+1, n, ab_i, ldab, ab_r, n+2 ); LAPACKE_sge_trans( LAPACK_COL_MAJOR, kd+1, n, afb_i, ldafb, afb_r, n+2 ); LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, b_i, ldb, b_r, nrhs+2 ); LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_i, ldx, x_r, nrhs+2 ); info_i = LAPACKE_spbrfs_work( LAPACK_ROW_MAJOR, uplo_i, n_i, kd_i, nrhs_i, ab_r, ldab_r, afb_r, ldafb_r, b_r, ldb_r, x_r, ldx_r, ferr_i, berr_i, work_i, iwork_i ); LAPACKE_sge_trans( LAPACK_ROW_MAJOR, n, nrhs, x_r, nrhs+2, x_i, ldx ); failed = compare_spbrfs( x, x_i, ferr, ferr_i, berr, berr_i, info, info_i, ldx, nrhs ); if( failed == 0 ) { printf( "PASSED: row-major middle-level interface to spbrfs\n" ); } else { printf( "FAILED: row-major middle-level interface to spbrfs\n" ); } /* Initialize input data, call the row-major high-level * interface to LAPACK routine and check the results */ for( i = 0; i < ldab*n; i++ ) { ab_i[i] = ab[i]; } for( i = 0; i < ldafb*n; i++ ) { afb_i[i] = afb[i]; } for( i = 0; i < ldb*nrhs; i++ ) { b_i[i] = b[i]; } for( i = 0; i < ldx*nrhs; i++ ) { x_i[i] = x_save[i]; } for( i = 0; i < nrhs; i++ ) { ferr_i[i] = ferr_save[i]; } for( i = 0; i < nrhs; i++ ) { berr_i[i] = berr_save[i]; } for( i = 0; i < 3*n; i++ ) { work_i[i] = work[i]; } for( i = 0; i < n; i++ ) { iwork_i[i] = iwork[i]; } /* Init row_major arrays */ LAPACKE_sge_trans( LAPACK_COL_MAJOR, kd+1, n, ab_i, ldab, ab_r, n+2 ); LAPACKE_sge_trans( LAPACK_COL_MAJOR, kd+1, n, afb_i, ldafb, afb_r, n+2 ); LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, b_i, ldb, b_r, nrhs+2 ); LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_i, ldx, x_r, nrhs+2 ); info_i = LAPACKE_spbrfs( LAPACK_ROW_MAJOR, uplo_i, n_i, kd_i, nrhs_i, ab_r, ldab_r, afb_r, ldafb_r, b_r, ldb_r, x_r, ldx_r, ferr_i, berr_i ); LAPACKE_sge_trans( LAPACK_ROW_MAJOR, n, nrhs, x_r, nrhs+2, x_i, ldx ); failed = compare_spbrfs( x, x_i, ferr, ferr_i, berr, berr_i, info, info_i, ldx, nrhs ); if( failed == 0 ) { printf( "PASSED: row-major high-level interface to spbrfs\n" ); } else { printf( "FAILED: row-major high-level interface to spbrfs\n" ); } /* Release memory */ if( ab != NULL ) { LAPACKE_free( ab ); } if( ab_i != NULL ) { LAPACKE_free( ab_i ); } if( ab_r != NULL ) { LAPACKE_free( ab_r ); } if( afb != NULL ) { LAPACKE_free( afb ); } if( afb_i != NULL ) { LAPACKE_free( afb_i ); } if( afb_r != NULL ) { LAPACKE_free( afb_r ); } if( b != NULL ) { LAPACKE_free( b ); } if( b_i != NULL ) { LAPACKE_free( b_i ); } if( b_r != NULL ) { LAPACKE_free( b_r ); } if( x != NULL ) { LAPACKE_free( x ); } if( x_i != NULL ) { LAPACKE_free( x_i ); } if( x_r != NULL ) { LAPACKE_free( x_r ); } if( x_save != NULL ) { LAPACKE_free( x_save ); } if( ferr != NULL ) { LAPACKE_free( ferr ); } if( ferr_i != NULL ) { LAPACKE_free( ferr_i ); } if( ferr_save != NULL ) { LAPACKE_free( ferr_save ); } if( berr != NULL ) { LAPACKE_free( berr ); } if( berr_i != NULL ) { LAPACKE_free( berr_i ); } if( berr_save != NULL ) { LAPACKE_free( berr_save ); } if( work != NULL ) { LAPACKE_free( work ); } if( work_i != NULL ) { LAPACKE_free( work_i ); } if( iwork != NULL ) { LAPACKE_free( iwork ); } if( iwork_i != NULL ) { LAPACKE_free( iwork_i ); } return 0; }