Added C23/C++26 <stdckdint.h>

Author: ZERICO2005

src/libc/header_test.c

@@ -16,6 +16,7 @@
 #include <stdarg.h>
 #include <stdbit.h>
 #include <stdbool.h>
+#include <stdckdint.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>

src/libc/include/stdckdint.h

@@ -0,0 +1,10 @@
+#ifndef _STDCKDINT_H
+#define _STDCKDINT_H
+
+#define __STDC_VERSION_STDCKDINT_H__ 202311L
+
+#define ckd_add(R, A, B) __builtin_add_overflow((A), (B), (R))
+#define ckd_sub(R, A, B) __builtin_sub_overflow((A), (B), (R))
+#define ckd_mul(R, A, B) __builtin_mul_overflow((A), (B), (R))
+
+#endif /* _STDCKDINT_H */

src/libcxx/header_test.cpp

@@ -54,6 +54,7 @@
 #include <stdarg.h>
 #include <stdbit.h>
 #include <stdbool.h>
+#include <stdckdint.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>