reg.h\sys\include - musl - musl - an implementation of the standard library for Linux-based systems

#ifndef _SYS_REG_H
#define _SYS_REG_H
#include <limits.h>
#include <unistd.h>
#include <bits/alltypes.h>
#undef __WORDSIZE
#if __LONG_MAX == 0x7fffffffL
#define __WORDSIZE 32
#else
#define __WORDSIZE 64
#endif
#include <bits/reg.h>
#endif