49 lines
2.0 KiB
OCaml
49 lines
2.0 KiB
OCaml
(***********************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the GNU Library General Public License, with *)
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(* the special exception on linking described in file ../LICENSE. *)
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(* *)
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(***********************************************************************)
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(** Character operations. *)
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external code : char -> int = "%identity"
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(** Return the ASCII code of the argument. *)
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val chr : int -> char
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(** Return the character with the given ASCII code.
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Raise [Invalid_argument "Char.chr"] if the argument is
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outside the range 0--255. *)
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val escaped : char -> string
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(** Return a string representing the given character,
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with special characters escaped following the lexical conventions
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of OCaml. *)
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val lowercase : char -> char
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(** Convert the given character to its equivalent lowercase character. *)
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val uppercase : char -> char
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(** Convert the given character to its equivalent uppercase character. *)
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type t = char
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(** An alias for the type of characters. *)
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val compare: t -> t -> int
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(** The comparison function for characters, with the same specification as
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{!Pervasives.compare}. Along with the type [t], this function [compare]
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allows the module [Char] to be passed as argument to the functors
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{!Set.Make} and {!Map.Make}. *)
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(**/**)
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(* The following is for system use only. Do not call directly. *)
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external unsafe_chr : int -> char = "%identity"
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