btowc Subroutine

Purpose

Single-byte to wide-character conversion.

Library

Standard Library (libc.a)

Syntax

#include <stdio.h>
#include <wchar.h>

wint_t btowc (intc);

Description

The btowc function determines whether c constitutes a valid (one-byte) character in the initial shift state.

The behavior of this function is affected by the LC_CTYPE category of the current locale.

Return Values

The btowc function returns WEOF if c has the value EOF or if (unsigned char) c does not constitute a valid (one-byte) character in the initial shift state. Otherwise, it returns the wide-character representation of that character.

Implementation Specifics

This subroutine is part of Base Operating System (BOS) subroutine.

Related Information

The wctob subroutine, the wchar.h file.