second.c File Reference

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Macros
#define	TAB_DOM   "%s%12lld%15lld%17lld\n"
#define	CASE2   0
#define	CREATE   1
#define	ADD   2
#define	MIDDLE   3
#define	CHANGE   4
#define	SUPERVISOR   5

Functions
void	dump_and_verify (int test_case, long long **values)
void	case1 (int num)
void	case2 (int num, int domain, long long *values)
void	case2_driver (void)
void	case1_driver (void)
int	main (int argc, char **argv)

Macro Definition Documentation

ADD

#define ADD   2

Definition at line 31 of file second.c.

CASE2

#define CASE2   0

Definition at line 29 of file second.c.

CHANGE

#define CHANGE   4

Definition at line 33 of file second.c.

CREATE

#define CREATE   1

Definition at line 30 of file second.c.

MIDDLE

#define MIDDLE   3

Definition at line 32 of file second.c.

SUPERVISOR

#define SUPERVISOR   5

Definition at line 34 of file second.c.

TAB_DOM

#define TAB_DOM   "%s%12lld%15lld%17lld\n"

Definition at line 27 of file second.c.

Function Documentation

case1()

void case1

(

int

num

)

Definition at line 140 of file second.c.

{
    int retval, num_tests = 3;
    long long **values;
    int EventSet1 = PAPI_NULL, EventSet2 = PAPI_NULL, EventSet3 = PAPI_NULL;
    PAPI_option_t options;
    const PAPI_component_info_t *cmpinfo;

    memset( &options, 0x0, sizeof ( options ) );

    retval = PAPI_library_init( PAPI_VER_CURRENT );
    if ( retval != PAPI_VER_CURRENT )
        test_fail( __FILE__, __LINE__, "PAPI_library_init", retval );

    /* get info from cpu component */
    cmpinfo = PAPI_get_component_info( 0 ); 
    if ( cmpinfo == NULL ) {
       test_fail( __FILE__, __LINE__,"PAPI_get_component_info", PAPI_ECMP);
    }

    if ( ( retval = PAPI_query_event( PAPI_TOT_INS ) ) != PAPI_OK )
        test_skip( __FILE__, __LINE__, "PAPI_query_event", retval );

    if ( ( retval = PAPI_query_event( PAPI_TOT_CYC ) ) != PAPI_OK )
        test_skip( __FILE__, __LINE__, "PAPI_query_event", retval );

    retval = PAPI_create_eventset( &EventSet1 );
    if ( retval == PAPI_OK )
        retval = PAPI_create_eventset( &EventSet2 );
    if ( retval == PAPI_OK )
        retval = PAPI_create_eventset( &EventSet3 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_create_eventset", retval );

    /* In Component PAPI, EventSets must be assigned a component index
       before you can fiddle with their internals. 0 is always the cpu component */
    retval = PAPI_assign_eventset_component( EventSet1, 0 );
    if ( retval == PAPI_OK )
        retval = PAPI_assign_eventset_component( EventSet2, 0 );
    if ( retval == PAPI_OK )
        retval = PAPI_assign_eventset_component( EventSet3, 0 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_assign_eventset_component",
                   retval );

    if ( num == CREATE ) {
        if (!TESTS_QUIET) printf( "\nTest case CREATE: Call PAPI_set_opt(PAPI_DOMAIN) on EventSet before add\n" );
        options.domain.eventset = EventSet1;
        options.domain.domain = PAPI_DOM_ALL;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );

        options.domain.eventset = EventSet2;
        options.domain.domain = PAPI_DOM_KERNEL;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );

        options.domain.eventset = EventSet3;
        options.domain.domain = PAPI_DOM_USER;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );
    }

    retval = PAPI_add_event( EventSet1, PAPI_TOT_INS );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_add_event(PAPI_TOT_INS)", retval );

    retval = PAPI_add_event( EventSet1, PAPI_TOT_CYC );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_add_event(PAPI_TOT_CYC)", retval );

    retval = PAPI_add_event( EventSet2, PAPI_TOT_INS );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_add_event(PAPI_TOT_INS)", retval );

    retval = PAPI_add_event( EventSet2, PAPI_TOT_CYC );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_add_event(PAPI_TOT_CYC)", retval );

    retval = PAPI_add_event( EventSet3, PAPI_TOT_INS );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_add_event(PAPI_TOT_INS)", retval );

    if ( num == MIDDLE ) {
        if (!TESTS_QUIET) printf( "\nTest case MIDDLE: Call PAPI_set_opt(PAPI_DOMAIN) on EventSet between adds\n" );
        options.domain.eventset = EventSet1;
        options.domain.domain = PAPI_DOM_ALL;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK && retval != PAPI_ECMP ) {
           test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );
        }

        options.domain.eventset = EventSet2;
        options.domain.domain = PAPI_DOM_KERNEL;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );

        options.domain.eventset = EventSet3;
        options.domain.domain = PAPI_DOM_USER;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );
    }

    retval = PAPI_add_event( EventSet3, PAPI_TOT_CYC );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_add_event(PAPI_TOT_CYC)", retval );

    if ( num == ADD ) {
        if (!TESTS_QUIET) printf( "\nTest case ADD: Call PAPI_set_opt(PAPI_DOMAIN) on EventSet after add\n" );
        options.domain.eventset = EventSet1;
        options.domain.domain = PAPI_DOM_ALL;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK && retval != PAPI_ECMP ) {
           test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );
        }
        options.domain.eventset = EventSet2;
        options.domain.domain = PAPI_DOM_KERNEL;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );

        options.domain.eventset = EventSet3;
        options.domain.domain = PAPI_DOM_USER;

        retval = PAPI_set_opt( PAPI_DOMAIN, &options );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );
    }

    /* 2 events */

    values = allocate_test_space( num_tests, 2 );

    if ( num == CHANGE ) {
        /* This testcase is dependent on the CREATE testcase running immediately before it, using
         * domain settings of "All", "Kernel" and "User", on event sets 1, 2, and 3, respectively.
         */
        PAPI_option_t option;
        if (!TESTS_QUIET) printf( "\nTest case CHANGE 1: Change domain on EventSet between runs, using generic domain options:\n" );
        PAPI_start( EventSet1 );
        PAPI_stop( EventSet1, values[0] );

        // change EventSet1 domain from All  to User
        option.domain.domain = PAPI_DOM_USER;
        option.domain.eventset = EventSet1;
        retval = PAPI_set_opt( PAPI_DOMAIN, &option );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );

        PAPI_start( EventSet2 );
        PAPI_stop( EventSet2, values[1] );

        // change EventSet2 domain from Kernel to All
        option.domain.domain = PAPI_DOM_ALL;
        option.domain.eventset = EventSet2;
        retval = PAPI_set_opt( PAPI_DOMAIN, &option );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );

        PAPI_start( EventSet3 );
        PAPI_stop( EventSet3, values[2] );

        // change EventSet3 domain from User  to Kernel
        option.domain.domain = PAPI_DOM_KERNEL;
        option.domain.eventset = EventSet3;
        retval = PAPI_set_opt( PAPI_DOMAIN, &option );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );

        free_test_space( values, num_tests );
        values = allocate_test_space( num_tests, 2 );

    }

    if ( num == SUPERVISOR &&
         ( cmpinfo->available_domains & PAPI_DOM_SUPERVISOR ) ) {
        PAPI_option_t option;

        if (!TESTS_QUIET) printf( "\nTest case CHANGE 2: Change domain on EventSets to include/exclude supervisor events:\n" );

        option.domain.domain = PAPI_DOM_ALL;
        option.domain.eventset = EventSet1;
        retval = PAPI_set_opt( PAPI_DOMAIN, &option );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_domain ALL ", retval );

        option.domain.domain = PAPI_DOM_ALL ^ PAPI_DOM_SUPERVISOR;
        option.domain.eventset = EventSet2;
        retval = PAPI_set_opt( PAPI_DOMAIN, &option );
        if ( retval != PAPI_OK ) {

                   /* DOM_ALL is special-cased as domains_available   */
                   /* in papi.c .  Some machines don't like DOM_OTHER */
                   /* so try that if the above case fails.            */
           option.domain.domain ^= PAPI_DOM_OTHER;
           option.domain.eventset = EventSet2;
           retval = PAPI_set_opt( PAPI_DOMAIN, &option );

                   if (retval != PAPI_OK) {
            test_fail( __FILE__, __LINE__, "PAPI_set_domain ALL^SUPERVISOR ", retval );
                   }
                }

        option.domain.domain = PAPI_DOM_SUPERVISOR;
        option.domain.eventset = EventSet3;
        retval = PAPI_set_opt( PAPI_DOMAIN, &option );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_domain SUPERVISOR ", retval );

        free_test_space( values, num_tests );
        values = allocate_test_space( num_tests, 2 );
    }
    /* Warm it up dude */

    PAPI_start( EventSet1 );
    do_flops( NUM_FLOPS );
    PAPI_stop( EventSet1, NULL );

    retval = PAPI_start( EventSet1 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_start", retval );

    do_flops( NUM_FLOPS );

    retval = PAPI_stop( EventSet1, values[0] );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_stop", retval );

    retval = PAPI_start( EventSet2 );

    do_flops( NUM_FLOPS );

    if ( retval == PAPI_OK ) {
        retval = PAPI_stop( EventSet2, values[1] );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
    } else {
        values[1][0] = retval;
        values[1][1] = retval;
    }

    retval = PAPI_start( EventSet3 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_start", retval );

    do_flops( NUM_FLOPS );

    retval = PAPI_stop( EventSet3, values[2] );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_stop", retval );

    retval = PAPI_cleanup_eventset( EventSet1 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_cleanup", retval );

    retval = PAPI_destroy_eventset( &EventSet1 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_destroy", retval );

    retval = PAPI_cleanup_eventset( EventSet2 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_cleanup", retval );

    retval = PAPI_destroy_eventset( &EventSet2 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_destroy", retval );

    retval = PAPI_cleanup_eventset( EventSet3 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_cleanup", retval );

    retval = PAPI_destroy_eventset( &EventSet3 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_destroy", retval );

    dump_and_verify( num, values );

    free(values);

    PAPI_shutdown(  );
}

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case1_driver()

void case1_driver

(

void

)

Definition at line 548 of file second.c.

{
    case1( ADD );
    case1( MIDDLE );
    case1( CREATE );
    case1( CHANGE );
    case1( SUPERVISOR );
}

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case2()

void case2	(	int	num,
		int	domain,
		long long *	values
	)

Definition at line 436 of file second.c.

{
    int retval;
    int EventSet1 = PAPI_NULL;
    PAPI_option_t options;

    memset( &options, 0x0, sizeof ( options ) );

    retval = PAPI_library_init( PAPI_VER_CURRENT );
    if ( retval != PAPI_VER_CURRENT )
        test_fail( __FILE__, __LINE__, "PAPI_library_init", retval );

    if ( ( retval = PAPI_query_event( PAPI_TOT_INS ) ) != PAPI_OK )
        test_skip( __FILE__, __LINE__, "PAPI_query_event", retval );

    if ( ( retval = PAPI_query_event( PAPI_TOT_CYC ) ) != PAPI_OK )
        test_skip( __FILE__, __LINE__, "PAPI_query_event", retval );

    if ( num == CREATE ) {
        if (!TESTS_QUIET) {
            printf( "\nTest case 2, CREATE: Call PAPI_set_domain(%s) before create\n",
                stringify_domain( domain ) );
            printf( "This should override the domain setting for this EventSet.\n" );
        }
        retval = PAPI_set_domain( domain );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );
    }

    retval = PAPI_create_eventset( &EventSet1 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_create_eventset", retval );

    if ( num == ADD ) {
        if (!TESTS_QUIET) {
            printf( "\nTest case 2, ADD: Call PAPI_set_domain(%s) before add\n",
                    stringify_domain( domain ) );
            printf( "This should have no effect on the domain setting for this EventSet.\n" );
        }

        retval = PAPI_set_domain( domain );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );
    }

    retval = PAPI_add_event( EventSet1, PAPI_TOT_INS );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_add_event(PAPI_TOT_INS)", retval );

    if ( num == MIDDLE ) {
        if (!TESTS_QUIET) {
            printf( "\nTest case 2, MIDDLE: Call PAPI_set_domain(%s) between adds\n",
                stringify_domain( domain ) );
            printf( "This should have no effect on the domain setting for this EventSet.\n" );
        }

        retval = PAPI_set_domain( domain );
        if ( retval != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );
    }

    retval = PAPI_add_event( EventSet1, PAPI_TOT_CYC );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_add_event(PAPI_TOT_CYC)", retval );


    /* Warm it up dude */

    PAPI_start( EventSet1 );
    do_flops( NUM_FLOPS );
    PAPI_stop( EventSet1, NULL );

    retval = PAPI_start( EventSet1 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_start", retval );

    do_flops( NUM_FLOPS );

    retval = PAPI_stop( EventSet1, values );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_stop", retval );

    retval = PAPI_cleanup_eventset( EventSet1 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_cleanup", retval );

    retval = PAPI_destroy_eventset( &EventSet1 );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_destroy", retval );

    PAPI_shutdown(  );
}

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case2_driver()

void case2_driver

(

void

)

Definition at line 530 of file second.c.

{
    long long **values;

    /* 3 tests, 2 events */

    values = allocate_test_space( 3, 2 );

    case2( CREATE, PAPI_DOM_KERNEL, values[0] );
    case2( ADD, PAPI_DOM_KERNEL, values[1] );
    case2( MIDDLE, PAPI_DOM_KERNEL, values[2] );

    dump_and_verify( CASE2, values );

    free(values);
}

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dump_and_verify()

void dump_and_verify	(	int	test_case,
		long long **	values
	)

Definition at line 37 of file second.c.

{
    long long min, max, min2, max2;

    if (!TESTS_QUIET) {
        printf( "-----------------------------------------------------------------\n" );
        printf( "Using %d iterations of c += a*b\n", NUM_FLOPS );
        printf( "-------------------------------------------------------------\n" );
    }
    if ( test_case == CASE2 ) {
        if (!TESTS_QUIET) {
            printf( "Test type   :   Before Create   Before Add       Between Adds\n" );
            printf( TAB_DOM, "PAPI_TOT_INS: ", ( values[0] )[0], ( values[1] )[0],
                ( values[2] )[0] );
            printf( TAB_DOM, "PAPI_TOT_CYC: ", ( values[0] )[1], ( values[1] )[1],
                ( values[2] )[1] );
            printf( "-------------------------------------------------------------\n" );
            printf( "Verification:\n" );
            printf( "Both rows equal 'n  N  N' where n << N\n" );
            return;
        }
    } else if ( test_case == CHANGE ) {
        min = ( long long ) ( ( double ) values[0][0] * ( 1 - TOLERANCE ) );
        max = ( long long ) ( ( double ) values[0][0] * ( 1 + TOLERANCE ) );
        if ( values[1][0] > max || values[1][0] < min )
        test_fail( __FILE__, __LINE__, "PAPI_TOT_INS", 1 );

        min = ( long long ) ( ( double ) values[1][1] * ( 1 - TOLERANCE ) );
        max = ( long long ) ( ( double ) values[1][1] * ( 1 + TOLERANCE ) );
        if ( ( values[2][1] + values[0][1] ) > max ||
             ( values[2][1] + values[0][1] ) < min )
            test_fail( __FILE__, __LINE__, "PAPI_TOT_CYC", 1 );

        if (!TESTS_QUIET) {
            printf( "Test type   :   PAPI_DOM_ALL  PAPI_DOM_KERNEL  PAPI_DOM_USER\n" );
            printf( TAB_DOM, "PAPI_TOT_INS: ", ( values[1] )[0], ( values[2] )[0],
                ( values[0] )[0] );
            printf( TAB_DOM, "PAPI_TOT_CYC: ", ( values[1] )[1], ( values[2] )[1],
                ( values[0] )[1] );
            printf( "-------------------------------------------------------------\n" );

            printf( "Verification:\n" );
            printf( "Both rows approximately equal '(N+n)  n  N', where n << N\n" );
            printf( "Column 1 approximately equals column 2 plus column 3\n" );
        }
    } else if ( test_case == SUPERVISOR ) {
        if (!TESTS_QUIET) {
            printf( "Test type   :   PAPI_DOM_ALL  All-minus-supervisor  Supervisor-only\n" );
            printf( TAB_DOM, "PAPI_TOT_INS: ", ( values[0] )[0], ( values[1] )[0],
                ( values[2] )[0] );
            printf( TAB_DOM, "PAPI_TOT_CYC: ", ( values[0] )[1], ( values[1] )[1],
                ( values[2] )[1] );
            printf( "-------------------------------------------------------------\n" );
            printf( "Verification:\n" );
            printf( "Both rows approximately equal '(N+n)  n  N', where n << N\n" );
            printf( "Column 1 approximately equals column 2 plus column 3\n" );
        }
    } else {
        min = ( long long ) ( ( double ) values[2][0] * ( 1 - TOLERANCE ) );
        max = ( long long ) ( ( double ) values[2][0] * ( 1 + TOLERANCE ) );

        min2 = ( long long ) ( ( double ) values[0][1] * ( 1 - TOLERANCE ) );
        max2 =
            ( long long ) ( ( double ) ( double ) values[0][1] *
                            ( 1 + TOLERANCE ) );

        if (!TESTS_QUIET) {
            printf( "Test type   :   PAPI_DOM_ALL  PAPI_DOM_KERNEL  PAPI_DOM_USER\n" );
            printf( TAB_DOM, "PAPI_TOT_INS: ", ( values[0] )[0], ( values[1] )[0],
                ( values[2] )[0] );
            printf( TAB_DOM, "PAPI_TOT_CYC: ", ( values[0] )[1], ( values[1] )[1],
                ( values[2] )[1] );
            printf( "-------------------------------------------------------------\n" );
            printf( "Verification:\n" );
            printf( "Both rows approximately equal '(N+n)  n  N', where n << N\n" );
            printf( "Column 1 approximately equals column 2 plus column 3\n" );
        }
        if ( values[0][0] > max || values[0][0] < min )
            test_fail( __FILE__, __LINE__, "PAPI_TOT_INS", 1 );

        if ( ( values[1][1] + values[2][1] ) > max2 ||
             ( values[1][1] + values[2][1] ) < min2 )
            test_fail( __FILE__, __LINE__, "PAPI_TOT_CYC", 1 );
    }

    if ( values[0][0] == 0 || values[0][1] == 0 ||
         values[1][0] == 0 || values[1][1] == 0 )
        test_fail( __FILE__, __LINE__,
                   "Verify non-zero count for all domain types", 1 );

    if ( values[2][0] == 0 || values[2][1] == 0 ) {
        if ( test_case == SUPERVISOR ) {
            if (!TESTS_QUIET) printf( "WARNING: No events counted in supervisor context.  This is expected in a non-virtualized environment.\n" );
        } else {
            test_fail( __FILE__, __LINE__,
                       "Verify non-zero count for all domain types", 1 );
        }
    }
}

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main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 558 of file second.c.

{
    tests_quiet( argc, argv );  /* Set TESTS_QUIET variable */

#if defined(sgi) && defined(host_mips)
    uid_t id;
    id = getuid(  );
    if ( id != 0 ) {
        printf( "IRIX requires root for PAPI_DOM_KERNEL and PAPI_DOM_ALL.\n" );
        test_skip( __FILE__, __LINE__, "", 1 );
    }
#endif

    if (!TESTS_QUIET) {
        printf( "Test second.c: set domain of eventset via PAPI_set_domain and PAPI_set_opt.\n\n" );
        printf( "* PAPI_set_domain(DOMAIN) sets the default domain \napplied to subsequently created EventSets.\n" );
        printf( "It should have no effect on existing EventSets.\n\n" );
        printf( "* PAPI_set_opt(DOMAIN,xxx) sets the domain for a specific EventSet.\n" );
        printf( "It should always override the default setting for that EventSet.\n" );
    }

    case2_driver(  );
    case1_driver(  );

    test_pass( __FILE__ );

    return 0;
}

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