nodeupdown_up_count - Man Page

#include <nodeupdown.h>

int nodeupdown_up_count(nodeupdown_t handle);

int nodeupdown_down_count(nodeupdown_t handle);

nodeupdown_up_count() returns the number of nodes that are up.

nodeupdown_down_count() returns the number of nodes that are down.

On success, nodeupdown_up_count() and nodeupdown_down_count() will return the number of up or down nodes respectively. On error, both return -1, and an error code is returned in handle.  The error code can be retrieved via nodeupdown_errnum(3), and a description of the error code can be retrieved via nodeupdown_strerror(3). Error codes are defined in nodeupdown.h.

NODEUPDOWN_ERR_NULLHANDLE

The handle parameter is NULL.  The nodeupdown handle must be created with nodeupdown_handle_create(3).

NODEUPDOWN_ERR_NOTLOADED

nodeupdown_load_data(3) has not been called and no data has been retrieved.

NODEUPDOWN_ERR_MAGIC

handle has an incorrect magic number.  handle does not point to a nodeupdown handle or handle has been destroyed by nodeupdown_handle_destroy(3).

/usr/include/nodeupdown.h

libnodeupdown(3), nodeupdown_handle_create(3), nodeupdown_load_data(3), nodeupdown_errnum(3), nodeupdown_strerror(3)

libnodeupdown(3).

The man page nodeupdown_down_count(3) is an alias of nodeupdown_up_count(3).