1 files changed, 14 insertions, 0 deletions
diff --git a/lib/libc/ctype/toupper.c b/lib/libc/ctype/toupper.c
new file mode 100644
index 00000000..e952acd9
--- /dev/null
+++ b/lib/libc/ctype/toupper.c
@@ -0,0 +1,14 @@
+#include <libc.h>
+#include <ctype.h>
+
+int toupper(int c)
+{
+	if (islower(c))
+		return c & 0x5f;
+	return c;
+}
+
+int toupper_l(int c, locale_t unused locale)
+{
+	return toupper(c);
+}