From 56e7673cc083b52e0d68354b28f360fe4d1791f3 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sun, 10 Aug 2025 04:32:47 -0400
Subject: lib: libc: Add isascii() in ctype.h

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 lib/libc/include/ctype.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/libc/include/ctype.h b/lib/libc/include/ctype.h
index 0ff9a43..2a827e3 100644
--- a/lib/libc/include/ctype.h
+++ b/lib/libc/include/ctype.h
@@ -35,6 +35,12 @@
 
 __BEGIN_DECLS
 
+__always_inline static inline int
+__isascii(int c)
+{
+    return c >= 0 && c <= 127;
+}
+
 __always_inline static inline int
 __tolower(int c)
 {
@@ -92,4 +98,7 @@ __END_DECLS
 /* Is a space? */
 #define isspace(C) __isspace((C))
 
+/* Is ascii? */
+#define isascii(C) __isascii((C))
+
 #endif  /* _CTYPE_H */
-- 
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