lapack_int LAPACKE_spotrf( int matrix_layout, char uplo, lapack_int n, float* a,
                           lapack_int lda )
{
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_spotrf", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_spo_nancheck( matrix_layout, uplo, n, a, lda ) ) {
        return -4;
    }
#endif
    return LAPACKE_spotrf_work( matrix_layout, uplo, n, a, lda );
}
Beispiel #2
0
int main(void)
{
    /* Local scalars */
    char uplo, uplo_i;
    lapack_int n, n_i;
    lapack_int lda, lda_i;
    lapack_int lda_r;
    lapack_int info, info_i;
    lapack_int i;
    int failed;

    /* Local arrays */
    float *a = NULL, *a_i = NULL;
    float *a_save = NULL;
    float *a_r = NULL;

    /* Iniitialize the scalar parameters */
    init_scalars_spotrf( &uplo, &n, &lda );
    lda_r = n+2;
    uplo_i = uplo;
    n_i = n;
    lda_i = lda;

    /* Allocate memory for the LAPACK routine arrays */
    a = (float *)LAPACKE_malloc( lda*n * sizeof(float) );

    /* Allocate memory for the C interface function arrays */
    a_i = (float *)LAPACKE_malloc( lda*n * sizeof(float) );

    /* Allocate memory for the backup arrays */
    a_save = (float *)LAPACKE_malloc( lda*n * sizeof(float) );

    /* Allocate memory for the row-major arrays */
    a_r = (float *)LAPACKE_malloc( n*(n+2) * sizeof(float) );

    /* Initialize input arrays */
    init_a( lda*n, a );

    /* Backup the ouptut arrays */
    for( i = 0; i < lda*n; i++ ) {
        a_save[i] = a[i];
    }

    /* Call the LAPACK routine */
    spotrf_( &uplo, &n, a, &lda, &info );

    /* Initialize input data, call the column-major middle-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*n; i++ ) {
        a_i[i] = a_save[i];
    }
    info_i = LAPACKE_spotrf_work( LAPACK_COL_MAJOR, uplo_i, n_i, a_i, lda_i );

    failed = compare_spotrf( a, a_i, info, info_i, lda, n );
    if( failed == 0 ) {
        printf( "PASSED: column-major middle-level interface to spotrf\n" );
    } else {
        printf( "FAILED: column-major middle-level interface to spotrf\n" );
    }

    /* Initialize input data, call the column-major high-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*n; i++ ) {
        a_i[i] = a_save[i];
    }
    info_i = LAPACKE_spotrf( LAPACK_COL_MAJOR, uplo_i, n_i, a_i, lda_i );

    failed = compare_spotrf( a, a_i, info, info_i, lda, n );
    if( failed == 0 ) {
        printf( "PASSED: column-major high-level interface to spotrf\n" );
    } else {
        printf( "FAILED: column-major high-level interface to spotrf\n" );
    }

    /* Initialize input data, call the row-major middle-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*n; i++ ) {
        a_i[i] = a_save[i];
    }

    LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
    info_i = LAPACKE_spotrf_work( LAPACK_ROW_MAJOR, uplo_i, n_i, a_r, lda_r );

    LAPACKE_sge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );

    failed = compare_spotrf( a, a_i, info, info_i, lda, n );
    if( failed == 0 ) {
        printf( "PASSED: row-major middle-level interface to spotrf\n" );
    } else {
        printf( "FAILED: row-major middle-level interface to spotrf\n" );
    }

    /* Initialize input data, call the row-major high-level
     * interface to LAPACK routine and check the results */
    for( i = 0; i < lda*n; i++ ) {
        a_i[i] = a_save[i];
    }

    /* Init row_major arrays */
    LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
    info_i = LAPACKE_spotrf( LAPACK_ROW_MAJOR, uplo_i, n_i, a_r, lda_r );

    LAPACKE_sge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );

    failed = compare_spotrf( a, a_i, info, info_i, lda, n );
    if( failed == 0 ) {
        printf( "PASSED: row-major high-level interface to spotrf\n" );
    } else {
        printf( "FAILED: row-major high-level interface to spotrf\n" );
    }

    /* Release memory */
    if( a != NULL ) {
        LAPACKE_free( a );
    }
    if( a_i != NULL ) {
        LAPACKE_free( a_i );
    }
    if( a_r != NULL ) {
        LAPACKE_free( a_r );
    }
    if( a_save != NULL ) {
        LAPACKE_free( a_save );
    }

    return 0;
}