1WCTOB(3P) POSIX Programmer's Manual WCTOB(3P)
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6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
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12 wctob — wide-character to single-byte conversion
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15 #include <stdio.h>
16 #include <wchar.h>
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18 int wctob(wint_t c);
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21 The functionality described on this reference page is aligned with the
22 ISO C standard. Any conflict between the requirements described here
23 and the ISO C standard is unintentional. This volume of POSIX.1‐2017
24 defers to the ISO C standard.
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26 The wctob() function shall determine whether c corresponds to a member
27 of the extended character set whose character representation is a sin‐
28 gle byte when in the initial shift state.
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30 The behavior of this function shall be affected by the LC_CTYPE cate‐
31 gory of the current locale.
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34 The wctob() function shall return EOF if c does not correspond to a
35 character with length one in the initial shift state. Otherwise, it
36 shall return the single-byte representation of that character as an
37 unsigned char converted to int.
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40 No errors are defined.
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42 The following sections are informative.
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45 None.
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48 None.
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51 None.
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54 None.
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57 btowc()
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59 The Base Definitions volume of POSIX.1‐2017, <stdio.h>, <wchar.h>
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62 Portions of this text are reprinted and reproduced in electronic form
63 from IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
64 table Operating System Interface (POSIX), The Open Group Base Specifi‐
65 cations Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of
66 Electrical and Electronics Engineers, Inc and The Open Group. In the
67 event of any discrepancy between this version and the original IEEE and
68 The Open Group Standard, the original IEEE and The Open Group Standard
69 is the referee document. The original Standard can be obtained online
70 at http://www.opengroup.org/unix/online.html .
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72 Any typographical or formatting errors that appear in this page are
73 most likely to have been introduced during the conversion of the source
74 files to man page format. To report such errors, see https://www.ker‐
75 nel.org/doc/man-pages/reporting_bugs.html .
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79IEEE/The Open Group 2017 WCTOB(3P)