1 files changed, 25 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/wcrtomb.c b/newlib/libc/stdlib/wcrtomb.c
new file mode 100644
index 000000000..f68533cbd
--- /dev/null
+++ b/newlib/libc/stdlib/wcrtomb.c
@@ -0,0 +1,25 @@
+#include <wchar.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <reent.h>
+#include <errno.h>
+
+size_t
+wcrtomb(char *s, wchar_t wc, mbstate_t *ps)
+{
+  int retval = 0;
+  _REENT_CHECK_MISC(_REENT);
+
+  if (s == NULL)
+    retval = _wctomb_r (_REENT, "", wc, ps);
+  else
+    retval = _wctomb_r (_REENT, s, wc, ps);
+
+  if (retval == -1)
+    {
+      _REENT->_errno = EILSEQ;
+      return (size_t)(-1);
+    }
+  else
+    return (size_t)retval;
+}