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+(***********************************************************************)
+(* *)
+(* Objective Caml *)
+(* *)
+(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
+(* *)
+(* Copyright 1996 Institut National de Recherche en Informatique et *)
+(* en Automatique. All rights reserved. This file is distributed *)
+(* under the terms of the GNU Library General Public License, with *)
+(* the special exception on linking described in file ../LICENSE. *)
+(* *)
+(***********************************************************************)
+
+(* $Id$ *)
+
+(** Array operations. *)
+
+external length : 'a array -> int = "%array_length"
+(** Return the length (number of elements) of the given array. *)
+
+external get : 'a array -> int -> 'a = "%array_safe_get"
+(** [Array.get a n] returns the element number [n] of array [a].
+ The first element has number 0.
+ The last element has number [Array.length a - 1].
+ You can also write [a.(n)] instead of [Array.get a n].
+
+ Raise [Invalid_argument "index out of bounds"]
+ if [n] is outside the range 0 to [(Array.length a - 1)]. *)
+
+external set : 'a array -> int -> 'a -> unit = "%array_safe_set"
+(** [Array.set a n x] modifies array [a] in place, replacing
+ element number [n] with [x].
+ You can also write [a.(n) <- x] instead of [Array.set a n x].
+
+ Raise [Invalid_argument "index out of bounds"]
+ if [n] is outside the range 0 to [Array.length a - 1]. *)
+
+external make : int -> 'a -> 'a array = "caml_make_vect"
+(** [Array.make n x] returns a fresh array of length [n],
+ initialized with [x].
+ All the elements of this new array are initially
+ physically equal to [x] (in the sense of the [==] predicate).
+ Consequently, if [x] is mutable, it is shared among all elements
+ of the array, and modifying [x] through one of the array entries
+ will modify all other entries at the same time.
+
+ Raise [Invalid_argument] if [n < 0] or [n > Sys.max_array_length].
+ If the value of [x] is a floating-point number, then the maximum
+ size is only [Sys.max_array_length / 2].*)
+
+external create : int -> 'a -> 'a array = "caml_make_vect"
+(** @deprecated [Array.create] is an alias for {!Array.make}. *)
+
+val init : int -> (int -> 'a) -> 'a array
+(** [Array.init n f] returns a fresh array of length [n],
+ with element number [i] initialized to the result of [f i].
+ In other terms, [Array.init n f] tabulates the results of [f]
+ applied to the integers [0] to [n-1].
+
+ Raise [Invalid_argument] if [n < 0] or [n > Sys.max_array_length].
+ If the return type of [f] is [float], then the maximum
+ size is only [Sys.max_array_length / 2].*)
+
+val make_matrix : int -> int -> 'a -> 'a array array
+(** [Array.make_matrix dimx dimy e] returns a two-dimensional array
+ (an array of arrays) with first dimension [dimx] and
+ second dimension [dimy]. All the elements of this new matrix
+ are initially physically equal to [e].
+ The element ([x,y]) of a matrix [m] is accessed
+ with the notation [m.(x).(y)].
+
+ Raise [Invalid_argument] if [dimx] or [dimy] is negative or
+ greater than [Sys.max_array_length].
+ If the value of [e] is a floating-point number, then the maximum
+ size is only [Sys.max_array_length / 2]. *)
+
+val create_matrix : int -> int -> 'a -> 'a array array
+(** @deprecated [Array.create_matrix] is an alias for {!Array.make_matrix}. *)
+
+val append : 'a array -> 'a array -> 'a array
+(** [Array.append v1 v2] returns a fresh array containing the
+ concatenation of the arrays [v1] and [v2]. *)
+
+val concat : 'a array list -> 'a array
+(** Same as [Array.append], but concatenates a list of arrays. *)
+
+val sub : 'a array -> int -> int -> 'a array
+(** [Array.sub a start len] returns a fresh array of length [len],
+ containing the elements number [start] to [start + len - 1]
+ of array [a].
+
+ Raise [Invalid_argument "Array.sub"] if [start] and [len] do not
+ designate a valid subarray of [a]; that is, if
+ [start < 0], or [len < 0], or [start + len > Array.length a]. *)
+
+val copy : 'a array -> 'a array
+(** [Array.copy a] returns a copy of [a], that is, a fresh array
+ containing the same elements as [a]. *)
+
+val fill : 'a array -> int -> int -> 'a -> unit
+(** [Array.fill a ofs len x] modifies the array [a] in place,
+ storing [x] in elements number [ofs] to [ofs + len - 1].
+
+ Raise [Invalid_argument "Array.fill"] if [ofs] and [len] do not
+ designate a valid subarray of [a]. *)
+
+val blit : 'a array -> int -> 'a array -> int -> int -> unit
+(** [Array.blit v1 o1 v2 o2 len] copies [len] elements
+ from array [v1], starting at element number [o1], to array [v2],
+ starting at element number [o2]. It works correctly even if
+ [v1] and [v2] are the same array, and the source and
+ destination chunks overlap.
+
+ Raise [Invalid_argument "Array.blit"] if [o1] and [len] do not
+ designate a valid subarray of [v1], or if [o2] and [len] do not
+ designate a valid subarray of [v2]. *)
+
+val to_list : 'a array -> 'a list
+(** [Array.to_list a] returns the list of all the elements of [a]. *)
+
+val of_list : 'a list -> 'a array
+(** [Array.of_list l] returns a fresh array containing the elements
+ of [l]. *)
+
+val iter : ('a -> unit) -> 'a array -> unit
+(** [Array.iter f a] applies function [f] in turn to all
+ the elements of [a]. It is equivalent to
+ [f a.(0); f a.(1); ...; f a.(Array.length a - 1); ()]. *)
+
+val map : ('a -> 'b) -> 'a array -> 'b array
+(** [Array.map f a] applies function [f] to all the elements of [a],
+ and builds an array with the results returned by [f]:
+ [[| f a.(0); f a.(1); ...; f a.(Array.length a - 1) |]]. *)
+
+val iteri : (int -> 'a -> unit) -> 'a array -> unit
+(** Same as {!Array.iter}, but the
+ function is applied to the index of the element as first argument,
+ and the element itself as second argument. *)
+
+val mapi : (int -> 'a -> 'b) -> 'a array -> 'b array
+(** Same as {!Array.map}, but the
+ function is applied to the index of the element as first argument,
+ and the element itself as second argument. *)
+
+val fold_left : ('a -> 'b -> 'a) -> 'a -> 'b array -> 'a
+(** [Array.fold_left f x a] computes
+ [f (... (f (f x a.(0)) a.(1)) ...) a.(n-1)],
+ where [n] is the length of the array [a]. *)
+
+val fold_right : ('b -> 'a -> 'a) -> 'b array -> 'a -> 'a
+(** [Array.fold_right f a x] computes
+ [f a.(0) (f a.(1) ( ... (f a.(n-1) x) ...))],
+ where [n] is the length of the array [a]. *)
+
+
+(** {6 Sorting} *)
+
+
+val sort : ('a -> 'a -> int) -> 'a array -> unit
+(** Sort an array in increasing order according to a comparison
+ function. The comparison function must return 0 if its arguments
+ compare as equal, a positive integer if the first is greater,
+ and a negative integer if the first is smaller (see below for a
+ complete specification). For example, {!Pervasives.compare} is
+ a suitable comparison function, provided there are no floating-point
+ NaN values in the data. After calling [Array.sort], the
+ array is sorted in place in increasing order.
+ [Array.sort] is guaranteed to run in constant heap space
+ and (at most) logarithmic stack space.
+
+ The current implementation uses Heap Sort. It runs in constant
+ stack space.
+
+ Specification of the comparison function:
+ Let [a] be the array and [cmp] the comparison function. The following
+ must be true for all x, y, z in a :
+- [cmp x y] > 0 if and only if [cmp y x] < 0
+- if [cmp x y] >= 0 and [cmp y z] >= 0 then [cmp x z] >= 0
+
+ When [Array.sort] returns, [a] contains the same elements as before,
+ reordered in such a way that for all i and j valid indices of [a] :
+- [cmp a.(i) a.(j)] >= 0 if and only if i >= j
+*)
+
+val stable_sort : ('a -> 'a -> int) -> 'a array -> unit
+(** Same as {!Array.sort}, but the sorting algorithm is stable (i.e.
+ elements that compare equal are kept in their original order) and
+ not guaranteed to run in constant heap space.
+
+ The current implementation uses Merge Sort. It uses [n/2]
+ words of heap space, where [n] is the length of the array.
+ It is usually faster than the current implementation of {!Array.sort}.
+*)
+
+val fast_sort : ('a -> 'a -> int) -> 'a array -> unit
+(** Same as {!Array.sort} or {!Array.stable_sort}, whichever is faster
+ on typical input.
+*)
+
+
+(**/**)
+(** {6 Undocumented functions} *)
+
+external unsafe_get : 'a array -> int -> 'a = "%array_unsafe_get"
+external unsafe_set : 'a array -> int -> 'a -> unit = "%array_unsafe_set"