From 3ad39e9878310e5317ee73c9b353c1e2c1c5c4ee Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Sat, 11 Jul 2026 22:48:30 +0800
Subject: lib: establish Zircon libc++ and KTL foundation

---
 lib/libc/include-after/ctype.h  | 33 +++++++++++++++++++++++++++++++++
 lib/libc/include-after/limits.h |  7 +++++++
 2 files changed, 40 insertions(+)
 create mode 100644 lib/libc/include-after/ctype.h
 create mode 100644 lib/libc/include-after/limits.h

(limited to 'lib/libc/include-after')

diff --git a/lib/libc/include-after/ctype.h b/lib/libc/include-after/ctype.h
new file mode 100644
index 0000000..ff2fcfe
--- /dev/null
+++ b/lib/libc/include-after/ctype.h
@@ -0,0 +1,33 @@
+// Copyright 2016 The Fuchsia Authors
+// Copyright (c) 2008 Travis Geiselbrecht
+//
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file or at
+// https://opensource.org/licenses/MIT
+
+#ifndef ZIRCON_KERNEL_LIB_LIBC_INCLUDE_CTYPE_H_
+#define ZIRCON_KERNEL_LIB_LIBC_INCLUDE_CTYPE_H_
+
+#include <zircon/compiler.h>
+
+__BEGIN_CDECLS
+
+int isalnum(int c);
+int isalpha(int c);
+int isblank(int c);
+int iscntrl(int c);
+int isdigit(int c);
+int isgraph(int c);
+int islower(int c);
+int isprint(int c);
+int ispunct(int c);
+int isspace(int c);
+int isupper(int c);
+int isxdigit(int c);
+
+int tolower(int c);
+int toupper(int c);
+
+__END_CDECLS
+
+#endif  // ZIRCON_KERNEL_LIB_LIBC_INCLUDE_CTYPE_H_
diff --git a/lib/libc/include-after/limits.h b/lib/libc/include-after/limits.h
new file mode 100644
index 0000000..f946def
--- /dev/null
+++ b/lib/libc/include-after/limits.h
@@ -0,0 +1,7 @@
+// Copyright 2020 The Fuchsia Authors
+//
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file or at
+// https://opensource.org/licenses/MIT
+
+// Empty file for toolchain's #include_next <limits.h> to find.
-- 
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