initial commit

core/include/blue/core/misc.h

@@ -0,0 +1,13 @@
+#ifndef BLUELIB_MISC_H_
+#define BLUELIB_MISC_H_
+
+#define b_unbox(type, box, member)                                             \
+	((type *_Nonnull)((box) ? (uintptr_t)(box) - (offsetof(type, member)) : 0))
+
+#define z__b_merge_(a, b)  a##b
+#define z__b_label_(a)     z__b_merge_(__unique_name_, a)
+#define z__b_unique_name() z__b_label_(__LINE__)
+#define z__b_numargs(arg_type, ...)                                            \
+	(sizeof((arg_type[]) {__VA_ARGS__}) / sizeof(arg_type))
+
+#endif   // C_MISC_H_