btowc(3C)btowc(3C)NAMEbtowc(), wctob() - conversion between single-byte and wide character
SYNOPSISDESCRIPTION
The function determines whether c constitutes a valid (one-
byte) character in the initial shift state.
The function determines whether c corresponds to a member of
the extended character set whose character representa‐
tion is a single byte when in the initial shift state.
APPLICATION USAGE
The prototypes of these functions are available to applications if they
are:
a. conformant.
b. Compiled with the macro with a value >=500.
c. Compiled with the macro with a value >= 200112.
EXTERNAL INFLUENCES
Environment Variables
The behavior of these functions is affected by the category.
RETURN VALUE
The function returns if c has the value or if c as an unsigned charac‐
ter does not constitute a valid (one-byte) character in the initial
shift state. Otherwise, it returns the wide character representation
of that character.
The function returns if c does not correspond to a character with
length one in the initial shift state. Otherwise, it returns the sin‐
gle-byte representation of that character.
ERRORS
No errors are defined.
AUTHOR
was developed by HP and Mitsubishi Electric Corp.
SEE ALSOthread_safety(5).
btowc(3C)
