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1 /* This file is part of XEmacs.
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2
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3 XEmacs is free software; you can redistribute it and/or modify it
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4 under the terms of the GNU General Public License as published by the
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5 Free Software Foundation; either version 2, or (at your option) any
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6 later version.
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7
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8 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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11 for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with XEmacs; see the file COPYING. If not, write to
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15 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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16 Boston, MA 02111-1307, USA. */
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17
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18 /* Synched up with: Not in FSF. */
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19
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20 #ifndef _XEMACS_ISO_WIDE_H
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21 #define _XEMACS_ISO_WIDE_H
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22
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23 /* The following macros are designed for SunOS 5.0 wide characters,
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24 in which the single byte ISO Latin-1 character 1xxxxxxx are represented
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25
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26 00110000 00000000 00000000 0xxxxxxx
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27
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28 For wide character systems which maintain the numeric value of all
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29 single-byte characters, IN_TABLE_DOMAIN can simply be defined
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30
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31 (0 <= (c) && (c) <= 0xff)
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32
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33 and no funky ISO_WIDE_TO_BYTE conversions are needed. */
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34
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35 /* Can't use isascii() because we want wide char argument */
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36 #define IS_ASCII(c) (0 <= (c) && (c) <= 0x7f)
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37
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38 #define IS_ISO_WIDE(c) (0x30000000 <= (c) && (c) <= 0x3000007f)
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39 #define IS_ISO_BYTE(c) (0x80 <= (c) && (c) <= 0xff)
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40
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41 #define IN_TABLE_DOMAIN(c) (IS_ASCII (c) || IS_ISO_WIDE (c))
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42
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43 #define ISO_WIDE_TO_BYTE(c) ((c) & 0x0000007f | 0x80)
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44 #define ISO_BYTE_TO_WIDE(c) ((c) & 0x7f | 0x30000000)
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45
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46 #define WIDE_TO_BYTE(c) (IS_ISO_WIDE (c) ? ISO_WIDE_TO_BYTE (c) : (c))
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47 #define BYTE_TO_WIDE(c) (IS_ISO_BYTE (c) ? ISO_BYTE_TO_WIDE (c) : (c))
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48
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49 #endif /* _XEMACS_ISO_WIDE_H */
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