1 files changed, 12 insertions, 0 deletions
diff --git a/lib/libc/wctype/iswlower.c b/lib/libc/wctype/iswlower.c
new file mode 100644
index 00000000..dea58f3a
--- /dev/null
+++ b/lib/libc/wctype/iswlower.c
@@ -0,0 +1,12 @@
+#include <libc.h>
+#include <wctype.h>
+
+int iswlower(wint_t wc)
+{
+	return towupper(wc) != wc;
+}
+
+weak int islower_l(wint_t wc, locale_t unused locale)
+{
+	return iswlower(wc);
+}