library

Prolog files

aggregate.pl  -- Aggregation operators on backtrackable predicates
ansi_term.pl  -- Print decorated text to ANSI consoles
apply.pl
convlist/3	Similar to maplist/3, but elements for which call(Goal, ElemIn, _) fails are omitted from ListOut.
exclude/3	Filter elements for which Goal fails.
foldl/4	Fold an ensemble of m (0 <= m <= 4) lists of length n head-to-tail ("fold-left"), using columns of m list elements as arguments for Goal.
foldl/5	Fold an ensemble of m (0 <= m <= 4) lists of length n head-to-tail ("fold-left"), using columns of m list elements as arguments for Goal.
foldl/6	Fold an ensemble of m (0 <= m <= 4) lists of length n head-to-tail ("fold-left"), using columns of m list elements as arguments for Goal.
foldl/7	Fold an ensemble of m (0 <= m <= 4) lists of length n head-to-tail ("fold-left"), using columns of m list elements as arguments for Goal.
include/3	Filter elements for which Goal succeeds.
maplist/2	True if Goal is successfully applied on all matching elements of the list.
maplist/3	True if Goal is successfully applied on all matching elements of the list.
maplist/4	True if Goal is successfully applied on all matching elements of the list.
maplist/5	True if Goal is successfully applied on all matching elements of the list.
partition/4	Filter elements of List according to Pred.
partition/5	Filter List according to Pred in three sets.
scanl/4	Scan an ensemble of m (0 <= m <= 4) lists of length n head-to-tail ("scan-left"), using columns of m list elements as arguments for Goal.
scanl/5	Scan an ensemble of m (0 <= m <= 4) lists of length n head-to-tail ("scan-left"), using columns of m list elements as arguments for Goal.
scanl/6	Scan an ensemble of m (0 <= m <= 4) lists of length n head-to-tail ("scan-left"), using columns of m list elements as arguments for Goal.
scanl/7	Scan an ensemble of m (0 <= m <= 4) lists of length n head-to-tail ("scan-left"), using columns of m list elements as arguments for Goal.
apply_macros.pl  -- Goal expansion rules to avoid meta-calling
apply_macros_sentinel/0	Used to detect that library(apply_macros) is loaded into the current context explicitly.
expand_phrase/2	Provide goal-expansion for PhraseGoal.
expand_phrase/4	Provide goal-expansion for PhraseGoal.
arithmetic.pl
arithmetic_expression_value/2	True when Result unifies with the arithmetic result of evaluating Expression.
arithmetic_function/1	Declare a predicate as an arithmetic function.
assoc.pl
assoc_to_keys/2	True if Keys is the list of keys in Assoc.
assoc_to_list/2	Translate Assoc to a list Pairs of Key-Value pairs.
assoc_to_values/2	True if Values is the list of values in Assoc.
del_assoc/4	True if Key-Value is in Assoc0.
del_max_assoc/4	True if Key-Value is in Assoc0 and Key is the greatest key.
del_min_assoc/4	True if Key-Value is in Assoc0 and Key is the smallest key.
empty_assoc/1	Is true if Assoc is the empty association list.
gen_assoc/3	True if Key-Value is an association in Assoc.
get_assoc/3	True if Key-Value is an association in Assoc.
get_assoc/5	True if Key-Val0 is in Assoc0 and Key-Val is in Assoc.
is_assoc/1	True if Assoc is an association list.
list_to_assoc/2	Create an association from a list Pairs of Key-Value pairs.
map_assoc/2	True if Pred(Value) is true for all values in Assoc.
map_assoc/3	Map corresponding values.
max_assoc/3	True if Key-Value is in Assoc and Key is the largest key.
min_assoc/3	True if Key-Value is in assoc and Key is the smallest key.
ord_list_to_assoc/2	Assoc is created from an ordered list Pairs of Key-Value pairs.
put_assoc/4	Assoc is Assoc0, except that Key is associated with Value.
atom.pl  -- Operations on atoms
backcomp.pl
$apropos_match/2	True if Needle is a sub atom of Haystack.
$arch/2
$argv/1
$declare_module/3	Used in triple20 particle library.
$home/1
$module/2
$set_prompt/1	Set the prompt for the toplevel.
$sig_atomic/1	Execute Goal without processing signals.
$strip_module/3	This used to be an internal predicate.
$version/1
C/3	Used to be generated by DCG.
at_initialization/1	Register goal only to be run if a saved state is restored.
call_cleanup/3	Call Cleanup with an indication of the reason unified to Catcher.
checklist/2
concat/3
concat_atom/2	Concatenate a list of atomic values to an atom.
concat_atom/3	Concatenate a list of atomic values to an atom, inserting Separator between each consecutive elements.
convert_time/2	Convert a time-stamp as obtained though get_time/1 into a textual representation using the C-library function ctime().
convert_time/8	Convert a time stamp, provided by get_time/1, time_file/2, etc.
current_module/2	True if Module is a module loaded from File.
current_mutex/3
current_thread/2
displayq/1	Write term ignoring operators and quote atoms.
displayq/2	Write term ignoring operators and quote atoms.
eval_license/0
export_list/2	Module exports the predicates of List.
feature/2	Control Prolog flags.
flush/0
free_variables/2	Return a list of unbound variables in Term.
hash/1	Demands PredInd to be indexed using a hash-table.
hash_term/2	If Term is ground, Hash is unified to an integer representing a hash for Term.
index/1	Prepare the predicate indicated by Head for multi-argument indexing.
lock_predicate/2
merge/3	Merge the ordered sets List1 and List2 into a new ordered list.
merge_set/3	Merge the ordered sets Set1 and Set2 into a new ordered set without duplicates.
message_queue_size/2	True if Queue holds Size terms.
proper_list/1	Old SWI-Prolog predicate to check for a list that really ends in a [].
read_clause/1
read_clause/2
read_history/6
read_pending_input/3
read_variables/2
read_variables/3
set_base_module/1	Set the default module from which we inherit.
set_feature/2	Control Prolog flags.
setup_and_call_cleanup/3	Call Cleanup once after Goal is finished.
setup_and_call_cleanup/4	Call Cleanup once after Goal is finished, with Catcher unified to the reason.
sformat/2
sformat/3
string_to_atom/2	Bi-directional conversion between string and atom.
string_to_list/2	Bi-directional conversion between a string and a list of character codes.
sublist/3	Succeeds if List2 unifies with a list holding those terms for which call(Goal, Elem) succeeds.
substring/4	Predecessor of sub_string using 1-based Offset.
sumlist/2	True when Sum is the list of all numbers in List.
thread_at_exit/1	Register Goal to be called when the calling thread exits.
trie_insert_new/3
unlock_predicate/2
write_length/3
write_ln/1
base32.pl  -- Base32 encoding and decoding
base64.pl  -- Base64 encoding and decoding
broadcast.pl
broadcast/1	Broadcast given event.
broadcast_request/1	Broadcast given event till accepted.
listen/2	Open a channel for listening for events of the given `Templ'.
listen/3	Open a channel for listening for events of the given `Templ'.
listening/3	returns currently open channels.
unlisten/1	Destroy a channel.
unlisten/2	Destroy a channel.
unlisten/3	Destroy a channel.
charsio.pl  -- I/O on Lists of Character Codes
check.pl
check/0	Run all consistency checks defined by checker/2.
checker/2	Register code validation routines.
list_autoload/0	Report predicates that may be auto-loaded.
list_cross_module_calls/0	List calls from one module to another using Module:Goal where the callee is not defined exported, public or multifile, i.e., where the callee should be considered private.
list_format_errors/0	List argument errors for format/2,3.
list_format_errors/1	List argument errors for format/2,3.
list_rationals/0	List rational numbers that appear in clauses.
list_rationals/1	List rational numbers that appear in clauses.
list_redefined/0	Lists predicates that are defined in the global module user as well as in a normal module; that is, predicates for which the local definition overrules the global default definition.
list_strings/0	List strings that appear in clauses.
list_strings/1	List strings that appear in clauses.
list_trivial_fails/0	List goals that trivially fail because there is no matching clause.
list_trivial_fails/1	List goals that trivially fail because there is no matching clause.
list_undefined/0	Report undefined predicates.
list_undefined/1	Report undefined predicates.
list_void_declarations/0	List predicates that have declared attributes, but no clauses.
string_predicate/1	Multifile hook to disable list_strings/0 on the given predicate.
trivial_fail_goal/1	Multifile hook that tells list_trivial_fails/0 to accept Goal as valid.
valid_string_goal/1	Multifile hook that qualifies Goal as valid for list_strings/0.
check_installation.pl  -- Check installation issues and features
check_config_files/0	Examines the locations of config files.
check_installation/0	Check features of the installed system.
check_installation/1	As check_installation/0, but additionally returns a list of Component-Problem pairs.
test_installation/0	Run regression tests in the installed system.
test_installation/1	Run regression tests in the installed system.
update_config_files/0	Move config files from their old location to the new if the file or directory exists in the old location but not in the new.
codesio.pl  -- I/O on Lists of Character Codes
coinduction.pl  -- Co-Logic Programming
csv.pl  -- Process CSV (Comma-Separated Values) data
ctypes.pl  -- Character code classification
is_digit/3	Succeeds if `C' is a digit using `Base' as base and `Weight' represents its value.
is_paren/2	True if Open is the open-parenthesis of Close.
to_lower/2	Downcase a character code.
to_upper/2	Upcase a character code.
upper_lower/2	True when U is the character code of an uppercase character and L is the character code of the corresponding lowercase character.
date.pl
date_time_value/3	Extract values from a date-time structure.
day_of_the_week/2	Computes the day of the week for a given date.
day_of_the_year/2	Computes the day of the year for a given date.
parse_time/2	Stamp is a timestamp created from parsing Text using the representation Format.
parse_time/3	Stamp is a timestamp created from parsing Text using the representation Format.
debug.pl
assertion_failed/2	This hook is called if the Goal of assertion/1 fails.
debug_print_hook/3	Hook called by debug/3.
assertion/1	Acts similar to C assert() macro.
debug/1	Add/remove a topic from being printed.
debug/3	Format a message if debug topic is enabled.
debug_message_context/1	Specify additional context for debug messages.
debugging/1	Examine debug topics.
debugging/2	Examine debug topics.
list_debug_topics/0	List currently known topics for debug/3 and their setting.
list_debug_topics/1	List currently known topics for debug/3 and their setting.
nodebug/1	Add/remove a topic from being printed.
dialect.pl
expects_dialect/1	Tell Prolog all subsequent code to the end of the file or the next :- expects_dialect/1 directive is written for the indicated Dialect.
source_exports/2	True if Source exports Export.
dicts.pl
dict_fill/4	Implementation for the dicts_to_same_keys/3 OnEmpty closure that fills new cells with a copy of ValueIn.
dict_keys/2	True when Keys is an ordered set of the keys appearing in Dict.
dict_size/2	True when KeyCount is the number of keys in Dict.
dicts_join/3	Join dicts in Dicts that have the same value for Key, provided they do not have conflicting values on other keys.
dicts_join/4	Join two lists of dicts (Dicts1 and Dicts2) on Key.
dicts_same_keys/2	True if List is a list of dicts that all have the same keys and Keys is an ordered set of these keys.
dicts_same_tag/2	True when List is a list of dicts that all have the tag Tag.
dicts_slice/3	DictsOut is a list of Dicts only containing values for Keys.
dicts_to_compounds/4	True when Dicts and Compounds are lists of the same length and each element of Compounds is a compound term whose arguments represent the values associated with the corresponding keys in Keys.
dicts_to_same_keys/3	DictsOut is a copy of DictsIn, where each dict contains all keys appearing in all dicts of DictsIn.
mapdict/2	True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.
mapdict/3	True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.
mapdict/4	True when all dicts have the same set of keys and call(Goal, Key, V1, ...) is true for all keys in the dicts.
dif.pl
dif/2	Constraint that expresses that Term1 and Term2 never become identical (==/2).
edinburgh.pl
debug/0	Switch on/off debug mode.
display/1	Write a term, ignoring operators and special syntax constructs such as brace terms ({a}) and lists ([a,b,c]).
display/2	Write a term, ignoring operators and special syntax constructs such as brace terms ({a}) and lists ([a,b,c]).
fileerrors/2	Query and change the fileerrors flag.
nodebug/0	Switch on/off debug mode.
reconsult/1	Load source file(s), wiping the old content first.
unknown/2	Edinburgh Prolog predicate for dealing dealing with undefined procedures.
edit.pl  -- Editor interface
error.pl
current_encoding/1	True if Name is the name of a supported encoding.
current_type/3	True when Type is a currently defined type and Var satisfies Type of the body term Body succeeds.
domain_error/2	The argument is of the proper type, but has a value that is outside the supported values.
existence_error/2	Culprit is of the correct type and correct domain, but there is no existing (external) resource of type ObjectType that is represented by it.
existence_error/3	Culprit is of the correct type and correct domain, but there is no existing (external) resource of type ObjectType that is represented by it in the provided set.
has_type/2	True if Term satisfies Type.
instantiation_error/1	An argument is under-instantiated.
is_of_type/2	True if Term satisfies Type.
must_be/2	True if Term satisfies the type constraints for Type.
permission_error/3	It is not allowed to perform Operation on (whatever is represented by) Culprit that is of the given PermissionType (in fact, the ISO Standard is confusing and vague about these terms' meaning).
representation_error/1	A representation error indicates a limitation of the implementation.
resource_error/1	A goal cannot be completed due to lack of resources.
syntax_error/1	A text has invalid syntax.
type_error/2	Tell the user that Culprit is not of the expected ValidType.
uninstantiation_error/1	An argument is over-instantiated.
exceptions.pl  -- Exception classification
explain.pl
explain/1	Give an explanation on Term.
explain/2	True when Explanation is an explanation of Term.
fastrw.pl
fast_read/1	The next term is read from current standard input and is unified with Term.
fast_write/1	Output Term in a way that fast_read/1 and fast_read/2 will be able to read it back.
fast_write_to_string/3	Perform a fast-write to the difference-slist String\Tail.
files.pl
can_open_file/2	Succeeds if the user has access to `File' in mode `Mode'.
chdir/1	Change Working Directory.
gensym.pl  -- Generate unique symbols
git.pl  -- Run GIT commands
hashtable.pl
ht_is_hashtable/1	True when HT is a hash table.
ht_new/1	Create a new hash table.
ht_put/3	Add a Key-Value to HT.
ht_put/5	Add Key-Value to HT.
ht_put_new/3	As ht_put/3, but fails if Key is already in HT instead of updating the associated value.
ht_size/2	True when Size is the number of key-value pairs in HT.
ht_update/4	True when HT holds Key-Old before and Key-New after this call.
heaps.pl  -- heaps/priority queues
help.pl  -- Text based manual
increval.pl
incr_directly_depends/2	True if Goal1 depends on Goal2 in the IDG.
incr_invalid_subgoals/1	List is a sorted list (set) of the incremental subgoals that are currently invalid.
incr_invalidate_call/1	This is the XSB name, but the manual says incr_invalidate_calls/1 and the comment with the code suggests this is misnamed.
incr_invalidate_calls/1	Invalidate all tables for subgoals of Goal as well as tables that are affected by these.
incr_propagate_calls/1	Activate the monotonic answer propagation similarly to when a new fact is asserted for a monotonic dynamic predicate.
incr_table_update/0	Updated all invalid tables.
incr_trans_depends/2	True for each pair in the transitive closure of incr_directly_depends(G1, G2).
is_incremental_subgoal/1	This predicate non-deterministically unifies Subgoal with incrementally tabled subgoals that are currently table entries.
intercept.pl  -- Intercept and signal interface
iostream.pl  -- Utilities to deal with streams
close_any/1	Execute the Close closure returned by open_any/5.
open_any/5	Establish a stream from Specification that should be closed using Close, which can either be called or passed to close_any/1.
lazy_lists.pl
lazy_engine_next/4	Lazy list iterator for engines.
lazy_findall/3	True when List is a lazy list containing the instantiations for Template for each answer of Goal.
lazy_findall/4	True when List is a lazy list containing the instantiations for Template for each answer of Goal.
lazy_get_codes/4	Lazy list iterator to get character codes from a stream.
lazy_list/2	Create a lazy list from a callback.
lazy_list/3	Create a lazy list where the next element is defined by.
lazy_list_iterator/4	Directive to create a lazy list iterator from a predicate that gets a single next value.
lazy_list_materialize/1	Materialize the lazy list.
lazy_message_queue/4	Lazy list iterator for message queues.
lazy_read_lines/4	Lazy list iterator to read lines from Stream.
lazy_read_terms/4	Turn a stream into a lazy list of Prolog terms.
listing.pl  -- List programs and pretty print clauses
lists.pl
append/2	Concatenate a list of lists.
append/3	List1AndList2 is the concatenation of List1 and List2.
clumped/2	Pairs is a list of Item-Count pairs that represents the run length encoding of Items.
delete/3	Delete matching elements from a list.
flatten/2	Is true if FlatList is a non-nested version of NestedList.
intersection/3	True if Set3 unifies with the intersection of Set1 and Set2.
is_set/1	True if Set is a proper list without duplicates.
last/2	Succeeds when Last is the last element of List.
list_to_set/2	True when Set has the same elements as List in the same order.
max_list/2	True if Max is the largest number in List.
max_member/2	True when Max is the largest member in the standard order of terms.
max_member/3	True when Max is the largest member according to Pred, which must be a 2-argument callable that behaves like (@=<)/2.
member/2	True if Elem is a member of List.
min_list/2	True if Min is the smallest number in List.
min_member/2	True when Min is the smallest member in the standard order of terms.
min_member/3	True when Min is the smallest member according to Pred, which must be a 2-argument callable that behaves like (@=<)/2.
nextto/3	True if Y directly follows X in List.
nth0/3	True when Elem is the Index'th element of List.
nth1/3	Is true when Elem is the Index'th element of List.
nth1/4	As nth0/4, but counting starts at 1.
numlist/3	List is a list [Low, Low+1, ... High].
permutation/2	True when Xs is a permutation of Ys.
prefix/2	True iff Part is a leading substring of Whole.
proper_length/2	True when Length is the number of elements in the proper list List.
reverse/2	Is true when the elements of List2 are in reverse order compared to List1.
same_length/2	Is true when List1 and List2 are lists with the same number of elements.
select/3	Is true when List1, with Elem removed, results in List2.
select/4	Select from two lists at the same position.
selectchk/3	Semi-deterministic removal of first element in List that unifies with Elem.
selectchk/4	Semi-deterministic version of select/4.
subseq/3	Is true when SubList contains a subset of the elements of List in the same order and Complement contains all elements of List not in SubList, also in the order they appear in List.
subset/2	True if all elements of SubSet belong to Set as well.
subtract/3	Delete all elements in Delete from Set.
union/3	True if Set3 unifies with the union of the lists Set1 and Set2.
macros.pl
expand_macros/5	Perform macro expansion on TermIn with layout PosIn to produce TermOut with layout PosOut.
include_macros/3	Include macros from another module.
macro_position/1	True when Position is the position of the macro.
main.pl  -- Provide entry point for scripts
make.pl
make/0	Reload all source files that have been changed since they were loaded.
make_reload_file/1	Reload file into the proper module.
modules.pl  -- Module utility predicates
nb_rbtrees.pl  -- Non-backtrackable operations on red black trees
nb_set.pl  -- Non-backtrackable sets
add_nb_set/2	Insert Key into the set.
add_nb_set/3	Insert Key into the set.
empty_nb_set/1	Create an empty non-backtrackable set.
gen_nb_set/2	Enumerate the members of a set in the standard order of terms.
nb_set_to_list/2	Get the elements of a an nb_set.
size_nb_set/2	Unify Size with the number of elements in the set.
occurs.pl  -- Finding and counting sub-terms
operators.pl
pop_operators/0	Revert all changes to the operator table realised since the last push_operators/1.
pop_operators/1	Reset operators as pushed by push_operators/2.
push_op/3	As op/3, but this call must appear between push_operators/1 and pop_operators/0.
push_operators/1	Installs the operators from New, where New is a list of op(Prec, Type, :Name).
push_operators/2	Installs the operators from New, where New is a list of op(Prec, Type, :Name).
option.pl  -- Option list processing
optparse.pl  -- command line parsing
ordsets.pl  -- Ordered set manipulation
oset.pl  -- Ordered set manipulation
pairs.pl  -- Operations on key-value lists
persistency.pl  -- Provide persistent dynamic predicates
portray_text.pl
portray_text/1	Switch portraying on or off.
set_portray_text/2	Set options for portraying.
set_portray_text/3	Set options for portraying.
pprint.pl  -- Pretty Print Prolog terms
predicate_options.pl  -- Access and analyse predicate options
prolog_autoload.pl  -- Autoload all dependencies
prolog_breakpoints.pl  -- Manage Prolog break-points
prolog_clause.pl
clause_info/4	Fetches source information for the given clause.
clause_info/5	Fetches source information for the given clause.
clause_name/2	Provide a suitable description of the indicated clause.
initialization_layout/4	Find term-layout of :- initialization directives.
make_varnames/5	Create a Term varnames(...) where each argument contains the name of the variable at that offset.
open_source/2	Hook into clause_info/5 that opens the stream holding the source for a specific clause.
predicate_name/2	Describe a predicate as [Module:]Name/Arity.
unify_goal/5	This hook is called to fix up source code manipulations that result from goal expansions.
unify_term/2	Unify the two terms, where T2 is created by writing the term and reading it back in, but be aware that rounding problems may cause floating point numbers not to unify.
prolog_code.pl  -- Utilities for reasoning about code
prolog_codewalk.pl  -- Prolog code walker
prolog_colour.pl  -- Prolog syntax colouring support.
prolog_config.pl  -- Provide configuration information
prolog_coverage.pl
cov_load_data/2	Reload coverage data from File.
cov_property/1	True when coverage analysis satisfies Property.
cov_reset/0	Discard all collected coverage data.
cov_save_data/2	Save the coverage information to File.
coverage/1	As call(Goal), collecting coverage information while Goal is running.
coverage/2	Collect and optionally report coverage by Goal.
report_hook/2	This hook is called after the data collection.
show_coverage/1	Show collected coverage data.
prolog_debug.pl
debug_control_hook/1	Allow user-hooks in the Prolog debugger interaction.
debugging/0	Report current status of the debugger.
debugging_hook/1	Multifile hook that is called as forall(debugging_hook(DebugMode), true) and that may be used to extend the information printed from other debugging libraries.
exception_hook/5	Trap exceptions and consider whether or not to start the tracer.
nospy/1	Set/clear spy-points.
nospyall/0	Set/clear spy-points.
notrap/1	Install a trap on error(Formal, Context) exceptions that unify.
spy/1	Set/clear spy-points.
trap/1	Install a trap on error(Formal, Context) exceptions that unify.
trap_alias/2	Define short hands for commonly used exceptions.
prolog_deps.pl
file_auto_import/2	Update the autoload/2 directives for File.
file_autoload_directives/3	Compute the dependencies as autoload/2 directives.
prolog_format.pl
format_spec/2	Parse a format string.
format_spec/3	DCG for parsing format strings.
format_types/2	True when Format requires an argument list with terms of the type specified by Types.
prolog_history.pl
prolog_history/1	Execute Action on the history.
prolog_jiti.pl
jiti_list/0	List the JITI (Just In Time Indexes) of selected predicates.
jiti_list/1	List the JITI (Just In Time Indexes) of selected predicates.
jiti_suggest_modes/0	Propose modes for the predicates referenced by Spec.
jiti_suggest_modes/1	Propose modes for the predicates referenced by Spec.
prolog_metainference.pl  -- Infer meta-predicate properties
infer_meta_predicate/2	True when MetaSpec is a meta-predicate specifier for the predicate Head.
inferred_meta_predicate/2	True when MetaSpec is an inferred meta-predicate specification for Head.
prolog_pack.pl  -- A package manager for Prolog
prolog_profile.pl
profile/1	Run once(Goal) under the execution profiler.
profile/2	Run once(Goal) under the execution profiler.
profile_data/1	Gather all relevant data from profiler.
profile_procedure_data/2	Collect data for Pred.
show_profile/1	Display last collected profiling data.
prolog_source.pl  -- Examine Prolog source-files
prolog_stack.pl
backtrace/1	Get and print a stacktrace to the user_error stream.
get_prolog_backtrace/2	Obtain a backtrace from the current location.
get_prolog_backtrace/3	Obtain a backtrace from the current location.
print_last_choicepoint/0	Print details on the last open choice point.
print_last_choicepoint/2
print_prolog_backtrace/2	Print a stacktrace in human readable form to Stream.
print_prolog_backtrace/3	Print a stacktrace in human readable form to Stream.
prolog_stack_frame_property/2	True when Property is a property of Frame.
stack_guard/1	Dynamic multifile hook that is normally not defined.
stack_guard/1	Dynamic multifile predicate.
prolog_trace.pl  -- Print access to predicates
prolog_versions.pl  -- Demand specific (Prolog) versions
prolog_wrap.pl  -- Wrapping predicates
prolog_xref.pl  -- Prolog cross-referencer data collection
pure_input.pl  -- Pure Input from files and streams
qpforeign.pl  -- Quintus compatible foreign loader
qsave.pl
arch_shlib/3	This is a user defined hook called by qsave_program/2.
qsave_program/1	Make a saved state in file `File'.
qsave_program/2	Make a saved state in file `File'.
qsave_toplevel/0	Called to handle `-c file` compilaton.
quasi_quotations.pl  -- Define Quasi Quotation syntax
quintus.pl  -- Quintus compatibility
random.pl  -- Random numbers
rbtrees.pl  -- Red black trees
is_rbtree/1	True if Term is a valid Red-Black tree.
list_to_rbtree/2	Tree is the red-black tree corresponding to the mapping in List, which should be a list of Key-Value pairs.
ord_list_to_rbtree/2	Tree is the red-black tree corresponding to the mapping in list List, which should be a list of Key-Value pairs.
rb_apply/4	If the value associated with key Key is Val0 in Tree, and if call(G,Val0,ValF) holds, then NewTree differs from Tree only in that Key is associated with value ValF in tree NewTree.
rb_clone/3	`Clone' the red-back tree TreeIn into a new tree TreeOut with the same keys as the original but with all values set to unbound values.
rb_del_max/4	Delete the largest element from the tree Tree, returning the key Key, the value Val associated with the key and a new tree NewTree.
rb_del_min/4	Delete the least element from the tree Tree, returning the key Key, the value Val associated with the key and a new tree NewTree.
rb_delete/3	Delete element with key Key from the tree Tree, returning the value Val associated with the key and a new tree NewTree.
rb_delete/4	Same as rb_delete(Tree, Key, NewTree), but also unifies Val with the value associated with Key in Tree.
rb_empty/1	Succeeds if Tree is an empty Red-Black tree.
rb_fold/4	Fold the given predicate over all the key-value pairs in Tree, starting with initial state State0 and returning the final state State.
rb_in/3	True when Key-Value is a key-value pair in red-black tree Tree.
rb_insert/4	Add an element with key Key and Value to the tree Tree creating a new red-black tree NewTree.
rb_insert_new/4	Add a new element with key Key and Value to the tree Tree creating a new red-black tree NewTree.
rb_keys/2	Keys is unified with an ordered list of all keys in the Red-Black tree Tree.
rb_lookup/3	True when Value is associated with Key in the Red-Black tree Tree.
rb_map/2	True if call(Goal, Value) is true for all nodes in T.
rb_map/3	For all nodes Key in the tree Tree, if the value associated with key Key is Val0 in tree Tree, and if call(G,Val0,ValF) holds, then the value associated with Key in NewTree is ValF.
rb_max/3	Key is the maximal key in Tree, and is associated with Val.
rb_min/3	Key is the minimum key in Tree, and is associated with Val.
rb_new/1	Create a new Red-Black tree Tree.
rb_next/4	Next is the next element after Key in Tree, and is associated with Val.
rb_partial_map/4	For all nodes Key in Keys, if the value associated with key Key is Val0 in tree Tree, and if call(G,Val0,ValF) holds, then the value associated with Key in NewTree is ValF, otherwise it is the value associated with the key in Tree.
rb_previous/4	Previous is the previous element after Key in Tree, and is associated with Val.
rb_size/2	Size is the number of elements in Tree.
rb_update/4	Tree NewTree is tree Tree, but with value for Key associated with NewVal.
rb_update/5	Same as rb_update(Tree, Key, NewVal, NewTree) but also unifies OldVal with the value associated with Key in Tree.
rb_visit/2	Pairs is an infix visit of tree Tree, where each element of Pairs is of the form Key-Value.
readln.pl  -- Read line as list of tokens
readutil.pl
read_file_to_codes/3	Read the file Spec into a list of Codes.
read_file_to_string/3	Read the file Spec into a the string String.
read_file_to_terms/3	Read the file Spec into a list of terms.
read_line_to_codes/2	Read the next line of input from Stream.
read_line_to_codes/3	Difference-list version to read an input line to a list of character codes.
read_line_to_string/2	Read the next line from Stream into String.
read_stream_to_codes/2	Read input from Stream to a list of character codes.
read_stream_to_codes/3	Read input from Stream to a list of character codes.
record.pl  -- Access compound arguments by name
rwlocks.pl
with_rwlock/3	Run Goal, synchronized with LockId in ModeSpec.
with_rwlock/4	Run Goal, synchronized with LockId in ModeSpec.
sandbox.pl
sandbox_allowed_directive/1	Throws an exception if G is not considered a safe directive.
sandbox_allowed_expansion/1	Throws an exception if G is not considered a safe expansion goal.
sandbox_allowed_goal/1	Throw an exception if it is not safe to call G.
format_calls/3	Find ~@ calls from Format and Args.
safe_call/1	Call Goal if it complies with the sandboxing rules.
safe_directive/1	Hook to declare additional directives as safe.
safe_global_variable/1	Declare the given global variable safe to write to.
safe_goal/1	True if calling Goal provides no security risc.
safe_meta/2	Hook.
safe_primitive/1	True if Goal is safe to call (i.e., cannot access dangerous system-resources and cannot upset other parts of the Prolog process).
safe_prolog_flag/2	True if it is safe to set the flag Flag to Value.
settings.pl  -- Setting management
shell.pl
cd/0	Change working directory.
cd/1	Change working directory.
dirs/0	Manage the directory stack:.
file_style/2	True when File should be listed as a terminal hyperlink.
ls/0	Listing similar to Unix =ls -F=, flagging directories with =/=.
ls/1	Listing similar to Unix =ls -F=, flagging directories with =/=.
mv/2	Move (Rename) a file.
popd/0	Manage the directory stack:.
pushd/0	Manage the directory stack:.
pushd/1	Manage the directory stack:.
pwd/0	Print current working directory.
rm/1	Remove (unlink) a file.
shell/0	Execute an interactive shell.
shlib.pl  -- Utility library for loading foreign objects (DLLs, shared objects)
solution_sequences.pl  -- Modify solution sequences
sort.pl
statistics.pl  -- Get information about resource usage
streams.pl  -- Manage Prolog streams
with_output_to/3	Run Goal and once/1 while capturing all output to all streams (current_output, user_output and user_error) in the string Output.
strings.pl
indent_lines/3	Add Prefix to the beginning of lines in In.
indent_lines/4	Similar to indent_lines/3, but only adds Prefix to lines for which call(Filter, Line) succeeds.
interpolate_string/4	Establish a string from a template by replacing patterns.
string/4	Implements the quasi quotation syntax string.
string_lines/2	True when String represents Lines.
system.pl
lock_predicate/1	Transform a predicate into a system predicate.
system_mode/1	Switch the system into system or user mode.
system_module/0	Any predicate defined after this declaraction uptil the end of the file will become a system predicate.
unlock_predicate/1	Transform a system predicate into a normal system predicate.
tables.pl  -- XSB interface to tables
tableutil.pl
summarize_idg/0	Implements XSB's statistics(summarize_idg).
summarize_idg/1	Implements XSB's statistics(summarize_idg).
table_statistics/0	Print a summary of statistics relevant to tabling.
table_statistics/1	Print a summary for the statistics of all tables for subgoals of Variant.
table_statistics/2	Give summary statistics for the tables associated with all subgoals of Variant.
table_statistics/3	Give summary statistics for the tables associated with all subgoals of Variant.
table_statistics_by_predicate/0	Print statistics on memory usage and lookups per predicate.
table_statistics_by_predicate/1	Print statistics on memory usage and lookups per predicate.
tdump/0	Dump all tables and their status that unify with Goal.
tdump/1	Dump all tables and their status that unify with Goal.
tdump/2	Dump all tables and their status that unify with Goal.
tidg/0	Dump the incremental dependency graph.
tidg/1	Dump the incremental dependency graph.
tstat/2	Print the top-N (for positive Top) or bottom-N (for negative Top) for Stat for all tabled subgoals of Variant (or all tabled subgoals for tstat/2).
tstat/3	Print the top-N (for positive Top) or bottom-N (for negative Top) for Stat for all tabled subgoals of Variant (or all tabled subgoals for tstat/2).
terms.pl  -- Term manipulation
thread.pl  -- High level thread primitives
thread_pool.pl
create_pool/1	Hook to create a thread pool lazily.
current_thread_pool/1	True if Name refers to a defined thread pool.
thread_create_in_pool/4	Create a thread in Pool.
thread_pool_create/3	Create a pool of threads.
thread_pool_destroy/1	Destroy the thread pool named Name.
thread_pool_property/2	True if Property is a property of thread pool Name.
worker_exitted/3	It is possible that '__thread_pool_manager' no longer exists while closing down the process because the manager was killed before the worker.
threadutil.pl  -- Interactive thread utilities
attach_console/0	Create a new console and make the standard Prolog streams point to it.
attach_console/1	Create a new console and make the standard Prolog streams point to it.
join_threads/0	Join all terminated threads.
tbacktrace/1	Print a backtrace for Thread to the stream user_error of the calling thread.
tbacktrace/2	Print a backtrace for Thread to the stream user_error of the calling thread.
tdebug/0	Enable or disable a thread or group of threads for debugging using the graphical tracer.
tdebug/1	Enable or disable a thread or group of threads for debugging using the graphical tracer.
thread_alias/1	Set the alias for a thread.
thread_has_console/0	True when the calling thread has an attached console.
threads/0	List currently known threads with their status.
tnodebug/0	Enable or disable a thread or group of threads for debugging using the graphical tracer.
tnodebug/1	Enable or disable a thread or group of threads for debugging using the graphical tracer.
tprofile/1	Profile the operation of Thread until the user hits a key.
tspy/1	Trap the graphical debugger on reaching Spec.
tspy/2	Trap the graphical debugger on reaching Spec.
with_stopped_threads/2	Stop all threads except the caller while running once(Goal).
tty.pl
menu/3	Show a menu.
tty_clear/0	Clear the display.
tty_flash/0	Give visual signal if possible, otherwise beep.
ugraphs.pl
add_edges/3	Unify NewGraph with a new graph obtained by adding the list of Edges to Graph.
add_vertices/3	Unify NewGraph with a new graph obtained by adding the list of Vertices to Graph.
complement/2	UGraphOut is a ugraph with an edge between all vertices that are not connected in UGraphIn and all edges from UGraphIn removed.
compose/3	Compose NewGraph by connecting the drains of LeftGraph to the sources of RightGraph.
connect_ugraph/3	Adds Start as an additional vertex that is connected to all vertices in UGraphIn.
del_edges/3	Unify NewGraph with a new graph obtained by removing the list of Edges from Graph.
del_vertices/3	Unify NewGraph with a new graph obtained by deleting the list of Vertices and all the edges that start from or go to a vertex in Vertices to the Graph.
edges/2	Unify Edges with all edges appearing in Graph.
neighbors/3	Neigbours is a sorted list of the neighbours of Vertex in Graph.
neighbours/3	Neigbours is a sorted list of the neighbours of Vertex in Graph.
reachable/3	True when Vertices is an ordered set of vertices reachable in UGraph, including Vertex.
top_sort/2	Sort vertices topologically.
transitive_closure/2	Generate the graph Closure as the transitive closure of Graph.
transpose_ugraph/2	Unify NewGraph with a new graph obtained from Graph by replacing all edges of the form V1-V2 by edges of the form V2-V1.
ugraph_layers/2	Sort vertices topologically.
ugraph_union/3	NewGraph is the union of Graph1 and Graph2.
vertices/2	Unify Vertices with all vertices appearing in Graph.
vertices_edges_to_ugraph/3	Create a UGraph from Vertices and Edges.
url.pl  -- Analysing and constructing URL
utf8.pl  -- UTF-8 encoding/decoding on lists of character codes.
varnumbers.pl
max_var_number/3	True when Max is the max of Start and the highest numbered $VAR(N) term.
varnumbers/3	Inverse of numbervars/3.
varnumbers_names/3	If Term is a term with numbered and named variables using the reserved term '$VAR'(X), Copy is a copy of Term where each '$VAR'(X) is consistently replaced by a fresh variable and Bindings is a list X = Var, relating the X terms with the variable it is mapped to.
vm.pl
clause_vm/2	True when VM is the virtual machine code of ClauseRef.
vm_list/1	Lists the definition of the predicates matching Spec to current_output.
vmi_labels/2	Translated between a raw and a labeled representation for a VMI sequence as produced by clause_vm/2.
wfs.pl
answer_residual/2	True when Goal resolves to a tabled predicate and Residual is the residual goal associated with an answer for Goal.
call_delays/2	True when Goal is true with Delays.
call_residual_program/2	Call Goal and return the full residual program as a list of Clauses.
delays_residual_program/2	Given a delay as returned by call_delays/2, produce a set of clauses the represents the complete residual program responsible for these delays, The program contains at least one loop through tnot/1 and is either inconsistent or has multiple models according to the stable model semantics.
when.pl
when/2	Execute Goal when Condition is satisfied.
writef.pl
swritef/2	Use writef/1 or writef/2 and write the result to a string.
swritef/3	Use writef/1 or writef/2 and write the result to a string.
writef/1	Formatted write to the current_output.
writef/2	Formatted write to the current_output.
www_browser.pl  -- Open a URL in the users browser
yall.pl  -- Lambda expressions
zip.pl  -- Access resource ZIP archives