initial

1 files changed, 19 insertions, 0 deletions

diff --git a/libk/src/ctype.c b/libk/src/ctype.c
new file mode 100644
index 0000000..2e8714f
--- /dev/null
+++ b/libk/src/ctype.c
@@ -0,0 +1,19 @@
+#include <ctype.h>
+
+int isspace(int c) {
+    switch (c) {
+        case ' ':
+        case '\t':
+        case '\v':
+        case '\f':
+        case '\r':
+        case '\n':
+            return 1;
+        default:
+            return 0;
+    }
+}
+
+int isdigit(int c) {
+    return c - '0' > -1 && c - '0' < 10;
+}