1 files changed, 6 insertions, 0 deletions
diff --git a/lib/libc/ctype/isxdigit.c b/lib/libc/ctype/isxdigit.c
new file mode 100644
index 00000000..588df77a
--- /dev/null
+++ b/lib/libc/ctype/isxdigit.c
@@ -0,0 +1,6 @@
+#include <ctype.h>
+
+int isxdigit(int c)
+{
+	return isdigit(c) || ((unsigned)c | 32) - 'a' < 6;
+}