1 files changed, 13 insertions, 0 deletions
diff --git a/src/ctype/iswupper.c b/src/ctype/iswupper.c
new file mode 100644
index 0000000..7e48666
--- /dev/null
+++ b/src/ctype/iswupper.c
@@ -0,0 +1,13 @@
+#include <wctype.h>
+
+int iswupper(wint_t wc)
+{
+	return towlower(wc) != wc;
+}
+
+int __iswupper_l(wint_t c, locale_t l)
+{
+	return iswupper(c);
+}
+
+weak_alias(__iswupper_l, iswupper_l);