wctob - wide-character to single-byte conversion
int wctob(wint_t c);
[CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2017 defers to the ISO C standard.
The wctob() function shall determine whether c corresponds to a member of the extended character set whose character representation is a single byte when in the initial shift state.
The behavior of this function shall be affected by the LC_CTYPE category of the current locale.
The wctob() function shall return EOF if c does not correspond to a character with length one in the initial shift state. Otherwise, it shall return the single-byte representation of that character as an unsigned char converted to int.
No errors are defined.
XBD <stdio.h>, <wchar.h>
First released in Issue 5. Included for alignment with ISO/IEC 9899:1990/Amendment 1:1995 (E).
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