#ifndef _LIBC_WCHAR_H
#define _LIBC_WCHAR_H

#pragma once

#include <stddef.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef unsigned int wint_t;

/* Opaque shift state for the (byte-oriented) C locale. */
typedef struct {
    unsigned long __opaque;
} mbstate_t;

#define WEOF ((wint_t)-1)

/* Byte-oriented C locale only: one byte, one character. */
size_t mbstowcs(wchar_t *dst, const char *src, size_t n);
int    mblen(const char *s, size_t n);
size_t mbrtowc(wchar_t *pwc, const char *s, size_t n, mbstate_t *ps);

#ifdef __cplusplus
}
#endif

#endif /* _LIBC_WCHAR_H */