reent.h

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#ifndef __RENT_H__
#define __RENT_H__

#include <errno.h>

struct _reent {
    enum errno_t _errno;
};

static inline void _REENT_INIT_PTR(struct _reent * reent) { reent->_errno = ENOERROR; }
extern struct _reent * _impure_ptr;
static inline void set_errno(enum errno_t _errno) { _impure_ptr->_errno = errno = _errno; }

#endif