1 files changed, 32 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/wcstombs_r.c b/newlib/libc/stdlib/wcstombs_r.c
new file mode 100644
index 00000000000..69c82d411d4
--- /dev/null
+++ b/newlib/libc/stdlib/wcstombs_r.c
@@ -0,0 +1,32 @@
+#include <stdlib.h>
+
+size_t
+_DEFUN (_wcstombs_r, (reent, s, pwcs, n, state),
+        struct _reent *r    _AND         
+        char          *s    _AND
+        const wchar_t *pwcs _AND
+        size_t         n    _AND
+        int           *state)
+{
+  char *ptr = s;
+  size_t max = n;
+  char buff[8];
+  int i, num_to_copy;
+
+  while (n > 0)
+    {
+      int bytes = _wctomb_r (r, buff, *pwcs, state);
+      if (bytes == -1)
+        return -1;
+      num_to_copy = (n > bytes ? bytes : (int)n);
+      for (i = 0; i < num_to_copy; ++i)
+        *ptr++ = buff[i];
+          
+      if (*pwcs == 0x00)
+        return ptr - s - (n >= bytes);
+      ++pwcs;
+      n -= num_to_copy;
+    }
+
+  return max;
+}