cru_set - associate a retrievable attribute with a graph
#include <cru/cru.h>
void
cru_set
(
cru_graph
g
,
void *s
,
int *err
)
Given a non-empty graph g and pointer-sized value s, this function stores s in such a way that it can be retrieved by any callback function invoking cru_get during any subsequent operation on g by other cru library functions. This capability serves as a way of passing additional parameters to user-defined predicates and operators called by cru library functions so that they need not depend entirely on their operands in the graph. The attribute s may be a scalar value or a pointer to data of any user-defined type.
If s is a pointer to the heap, its memory is not reclaimed by freeing the graph g. The application must manage the memory itself.
none
The err parameter is used to report any events preventing successful completion of the requested operation to the caller. If *err is zero on entry and the operation does not succeed, then *err is assigned a non-zero number. Positive numbers are for POSIX or user-defined error codes, and negative numbers down to -CRU_MAX_ERR are specific to cru.
Values of *err listed below refer to errors that are detected and handled. Unlisted values in the range of -CRU_INT_ERR through -CRU_MAX_ERR likely indicate internal errors attributable to bugs in cru. Any other unlisted values may indicate memory corruption or invalid usage of the API.
CRU_NULGPH
The parameter g refers to an empty graph.
CRU_BADGPH
The parameter g refers to an invalid or corrupted graph.
See cru_get.
See cru_get.
/usr/local/include/cru/cru.h
cru, cru_bop, cru_bpred, cru_builder, cru_built, cru_cbop, cru_classifier, cru_class_of, cru_class_size, cru_composed, cru_composer, cru_connect, cru_connector, cru_cqop, cru_crossed, cru_crosser, cru_ctop, cru_ctop_pair, cru_ctop_quad, cru_data_types, cru_deduplicated, cru_destructor, cru_destructor_pair, cru_edge_count, cru_fabricated, cru_fabricator, cru_filter, cru_filtered, cru_fold, cru_free_kill_switch, cru_free_later, cru_free_now, cru_free_partition, cru_function_types, cru_get, cru_hash, cru_induced, cru_inducer, cru_kernel, cru_kill, cru_killed, cru_mapreduced, cru_mapreducer, cru_merged, cru_merger, cru_mutated, cru_mutator, cru_new_kill_switch, cru_nop, cru_order, cru_order_pair, cru_partition_of, cru_plan, cru_postponed, cru_postponer, cru_prop, cru_prop_pair, cru_pruner, cru_qop, cru_qpred, cru_sig, cru_singleton, cru_split, cru_splitter, cru_spread, cru_strerror, cru_stretch, cru_stretched, cru_stretcher, cru_subconnector, cru_terminus_count, cru_top, cru_tpred, cru_united, cru_uop, cru_vertex_count, cru_zone
Dennis Furey (milonga@delayinsensitive.com)
https://github.com/gueststar/cru