1 files changed, 19 insertions, 0 deletions
diff --git a/src/multibyte/mbtowc.c b/src/multibyte/mbtowc.c
new file mode 100644
index 00000000..bdcaeb3c
--- /dev/null
+++ b/src/multibyte/mbtowc.c
@@ -0,0 +1,19 @@
+/* 
+ * This code was written by Rich Felker in 2010; no copyright is claimed.
+ * This code is in the public domain. Attribution is appreciated but
+ * unnecessary.
+ */
+
+#include <stdlib.h>
+#include <inttypes.h>
+#include <wchar.h>
+#include <errno.h>
+
+#include "internal.h"
+
+int mbtowc(wchar_t *wc, const char *s, size_t n)
+{
+	mbstate_t st = { 0 };
+	n = mbrtowc(wc, s, n, &st);
+	return n+2 ? n : -1;
+}