/usr/lib/ocaml/extlib/uChar.mli is in libextlib-ocaml-dev 1.5.2-1build1.
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* UChar - Unicode (ISO-UCS) characters
* Copyright (C) 2002, 2003 Yamagata Yoriyuki
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version,
* with the special exception on linking described in file LICENSE.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
(** Unicode (ISO-UCS) characters.
This module implements Unicode (actually ISO-UCS) characters. All
31-bit code points are allowed.
*)
(** Unicode characters. All 31-bit code points are allowed.*)
type t
exception Out_of_range
(** [char_of u] returns the Latin-1 representation of [u].
If [u] can not be represented by Latin-1, raises Out_of_range *)
val char_of : t -> char
(** [of_char c] returns the Unicode character of the Latin-1 character [c] *)
val of_char : char -> t
(** [code u] returns the Unicode code number of [u].
If the value can not be represented by a positive integer,
raise Out_of_range *)
val code : t -> int
(** [code n] returns the Unicode character with the code number [n].
If n >= 2^32 or n < 0, raises [invalid_arg] *)
val chr : int -> t
(** [uint_code u] returns the Unicode code number of [u].
The returned int is unsigned, that is, on 32-bit platforms,
the sign bit is used for storing the 31-th bit of the code number. *)
external uint_code : t -> int = "%identity"
(** [chr_of_uint n] returns the Unicode character of the code number [n].
[n] is interpreted as unsigned, that is, on 32-bit platforms,
the sign bit is treated as the 31-th bit of the code number.
If n exceeds 31-bit values, then raise [Invalid_arg]. *)
val chr_of_uint : int -> t
(** Unsafe version of {!UChar.chr_of_uint}.
No check of its argument is performed. *)
external unsafe_chr_of_uint : int -> t = "%identity"
(** Equality by code point comparison *)
val eq : t -> t -> bool
(** [compare u1 u2] returns,
a value > 0 if [u1] has a larger Unicode code number than [u2],
0 if [u1] and [u2] are the same Unicode character,
a value < 0 if [u1] has a smaller Unicode code number than [u2]. *)
val compare : t -> t -> int
(** Aliases of [type t] *)
type uchar = t
(** Alias of [uint_code] *)
val int_of_uchar : uchar -> int
(** Alias of [chr_of_uint] *)
val uchar_of_int : int -> uchar
|