newlib: wide char support

git-svn-id: svn://kolibrios.org@6607 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/newlib/libc/stdlib/wctob.c

@@ -0,0 +1,26 @@
+#include <reent.h>
+#include <wchar.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include "local.h"
+
+int
+wctob (wint_t wc)
+{
+  struct _reent *reent;
+  mbstate_t mbs;
+  unsigned char pmb[MB_LEN_MAX];
+
+  if (wc == WEOF)
+    return EOF;
+
+  /* Put mbs in initial state. */
+  memset (&mbs, '\0', sizeof (mbs));
+
+  reent = _REENT;
+  _REENT_CHECK_MISC(reent);
+
+  return __wctomb (reent, (char *) pmb, wc, __locale_charset (), &mbs) == 1
+	  ? (int) pmb[0] : EOF;
+}