WCWIDTH(3) NEWLIB WCWIDTH(3)NAME
7.29 `wcwidth'--number of column positions of a wide-character code
SYNOPSIS
#include <wchar.h>
int wcwidth(const wchar_t WC);
DESCRIPTION
The `wcwidth' function shall determine the number of column positions
required for the wide character WC. The application shall ensure that
the value of WC is a character representable as a wchar_t, and is a
wide-character code corresponding to a valid character in the current
locale.
RETURNS
The `wcwidth' function shall either return 0 (if WC is a null wide-
character code), or return the number of column positions to be occu‐
pied by the wide-character code WC, or return -1 (if WC does not corre‐
spond to a printable wide-character code).
PORTABILITY
`wcwidth' has been introduced in the Single UNIX Specification Volume
2. `wcwidth' has been marked as an extension in the Single UNIX Speci‐
fication Volume 3.
SEE ALSOwcwidth is part of the library. The full documentation for is main‐
tained as a Texinfo manual. If info and are properly installed at your
site, the command
info
will give you access to the complete manual.
NEWLIB April 2010 WCWIDTH(3)
