From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Sun, 7 Dec 2025 20:10:31 +0100
Subject: Add build system scaffolding and libc headers

---
 lib/libc/wchar/wctob.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 lib/libc/wchar/wctob.c

(limited to 'lib/libc/wchar/wctob.c')

diff --git a/lib/libc/wchar/wctob.c b/lib/libc/wchar/wctob.c
new file mode 100644
index 00000000..702e3f75
--- /dev/null
+++ b/lib/libc/wchar/wctob.c
@@ -0,0 +1,16 @@
+#include <stdlib.h>
+#include <wchar.h>
+#include <stdio.h>
+
+#define IS_CODEUNIT(c) ((unsigned)(c) - 0xdf80 < 0x80)
+
+int wctob(wint_t c)
+{
+	if (c < 128U)
+		return (int)c;
+
+	if (MB_CUR_MAX == 1 && IS_CODEUNIT(c))
+		return (unsigned char)c;
+
+	return EOF;
+}
-- 
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