From 1c8e37f63d413a559825020289178d442537449e Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Fri, 2 Jan 2026 10:09:37 +0800
Subject: dev(sell): add simple libc and implement shell please see the log for
 detail.

---
 include/ulib/cstdlib | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 include/ulib/cstdlib

(limited to 'include/ulib/cstdlib')

diff --git a/include/ulib/cstdlib b/include/ulib/cstdlib
new file mode 100644
index 0000000..69b9bb6
--- /dev/null
+++ b/include/ulib/cstdlib
@@ -0,0 +1,52 @@
+#ifndef _CPP_CSTDLIB
+#define _CPP_CSTDLIB
+
+#include "stdlib.h"
+
+namespace std
+{
+    using :: malloc;
+    using :: free;
+    using :: calloc;
+    using :: realloc;
+
+    using :: exit;
+    using :: abort;
+    using :: atexit;
+    using :: getenv;
+    using :: system;
+
+    using :: atoi;
+    using :: atol;
+    using :: atoll;
+    using :: atof;
+
+    using :: strtol;
+    using :: strtoul;
+    using :: strtoll;
+    using :: strtoull;
+
+    using :: strtod;
+    using :: strtof;
+
+    using :: bsearch;
+    using :: qsort;
+
+    using :: abs;
+    using :: labs;
+    using :: llabs;
+    using :: div;
+    using :: ldiv;
+    using :: lldiv;
+
+    using :: rand;
+    using :: srand;
+
+    using :: mblen;
+    using :: mbtowc;
+    using :: wctomb;
+    using :: mbstowcs;
+    using :: wcstombs;
+}
+
+#endif
\ No newline at end of file
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