1 files changed, 5 insertions, 0 deletions
diff --git a/userland/libc/ctype/islower.c b/userland/libc/ctype/islower.c
new file mode 100644
index 0000000..d3bed82
--- /dev/null
+++ b/userland/libc/ctype/islower.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int islower(int c) {
+  return (c >= 'a' && c <= 'z');
+}