newlib-cygwin/newlib/libc/stdlib/btowc.c

29 lines
450 B
C

#include <wchar.h>
#include <stdlib.h>
#include <stdio.h>
#include <reent.h>
#include <string.h>
wint_t
btowc (int c)
{
mbstate_t mbs;
int retval = 0;
wchar_t pwc;
unsigned char b;
b = (unsigned char)c;
/* Put mbs in initial state. */
memset (&mbs, '\0', sizeof (mbs));
_REENT_CHECK_MISC(_REENT);
retval = _mbtowc_r (_REENT, &pwc, &b, 1, &mbs);
if (c == EOF || retval != 1)
return WEOF;
else
return (wint_t)pwc;
}