diff --git a/libc/include/pthread.h b/libc/include/pthread.h
index ccafd78..32315fe 100644
--- a/libc/include/pthread.h
+++ b/libc/include/pthread.h
@@ -39,14 +39,14 @@
 __BEGIN_DECLS
 
 enum {
-    PTHREAD_MUTEX_NORMAL = 0,
-    PTHREAD_MUTEX_RECURSIVE = 1,
-    PTHREAD_MUTEX_ERRORCHECK = 2,
+  PTHREAD_MUTEX_NORMAL = 0,
+  PTHREAD_MUTEX_RECURSIVE = 1,
+  PTHREAD_MUTEX_ERRORCHECK = 2,
 
-    PTHREAD_MUTEX_ERRORCHECK_NP = PTHREAD_MUTEX_ERRORCHECK,
-    PTHREAD_MUTEX_RECURSIVE_NP  = PTHREAD_MUTEX_RECURSIVE,
+  PTHREAD_MUTEX_ERRORCHECK_NP = PTHREAD_MUTEX_ERRORCHECK,
+  PTHREAD_MUTEX_RECURSIVE_NP  = PTHREAD_MUTEX_RECURSIVE,
 
-    PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
+  PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
 };
 
 #define PTHREAD_MUTEX_INITIALIZER { { ((PTHREAD_MUTEX_NORMAL & 3) << 14) } }
@@ -83,74 +83,74 @@
 #define PTHREAD_SCOPE_SYSTEM     0
 #define PTHREAD_SCOPE_PROCESS    1
 
-int pthread_atfork(void (*)(void), void (*)(void), void (*)(void)) __INTRODUCED_IN(12);
+int pthread_atfork(void (*__prepare)(void), void (*__parent)(void), void (*__child)(void)) __INTRODUCED_IN(12);
 
-int pthread_attr_destroy(pthread_attr_t*);
-int pthread_attr_getdetachstate(const pthread_attr_t*, int*);
-int pthread_attr_getguardsize(const pthread_attr_t*, size_t*);
-int pthread_attr_getschedparam(const pthread_attr_t*, struct sched_param*);
-int pthread_attr_getschedpolicy(const pthread_attr_t*, int*);
-int pthread_attr_getscope(const pthread_attr_t*, int*);
-int pthread_attr_getstack(const pthread_attr_t*, void**, size_t*);
-int pthread_attr_getstacksize(const pthread_attr_t*, size_t*);
-int pthread_attr_init(pthread_attr_t*);
-int pthread_attr_setdetachstate(pthread_attr_t*, int);
-int pthread_attr_setguardsize(pthread_attr_t*, size_t);
-int pthread_attr_setschedparam(pthread_attr_t*, const struct sched_param*);
-int pthread_attr_setschedpolicy(pthread_attr_t*, int);
-int pthread_attr_setscope(pthread_attr_t*, int);
-int pthread_attr_setstack(pthread_attr_t*, void*, size_t);
-int pthread_attr_setstacksize(pthread_attr_t*, size_t);
+int pthread_attr_destroy(pthread_attr_t* __attr);
+int pthread_attr_getdetachstate(const pthread_attr_t* __attr, int* __state);
+int pthread_attr_getguardsize(const pthread_attr_t* __attr, size_t* __size);
+int pthread_attr_getschedparam(const pthread_attr_t* __attr, struct sched_param* __param);
+int pthread_attr_getschedpolicy(const pthread_attr_t* __attr, int* __policy);
+int pthread_attr_getscope(const pthread_attr_t* __attr, int* __scope);
+int pthread_attr_getstack(const pthread_attr_t* __attr, void** __addr, size_t* __size);
+int pthread_attr_getstacksize(const pthread_attr_t* __attr, size_t* __size);
+int pthread_attr_init(pthread_attr_t* __attr);
+int pthread_attr_setdetachstate(pthread_attr_t* __attr, int __state);
+int pthread_attr_setguardsize(pthread_attr_t* __attr, size_t __size);
+int pthread_attr_setschedparam(pthread_attr_t* __attr, const struct sched_param* __param);
+int pthread_attr_setschedpolicy(pthread_attr_t* __attr, int __policy);
+int pthread_attr_setscope(pthread_attr_t* __attr, int __scope);
+int pthread_attr_setstack(pthread_attr_t* __attr, void* __addr, size_t __size);
+int pthread_attr_setstacksize(pthread_attr_t* __addr, size_t __size);
 
-int pthread_condattr_destroy(pthread_condattr_t*);
-int pthread_condattr_getclock(const pthread_condattr_t*, clockid_t*) __INTRODUCED_IN(21);
-int pthread_condattr_getpshared(const pthread_condattr_t*, int*);
-int pthread_condattr_init(pthread_condattr_t*);
-int pthread_condattr_setclock(pthread_condattr_t*, clockid_t) __INTRODUCED_IN(21);
-int pthread_condattr_setpshared(pthread_condattr_t*, int);
+int pthread_condattr_destroy(pthread_condattr_t* __attr);
+int pthread_condattr_getclock(const pthread_condattr_t* __attr, clockid_t* __clock) __INTRODUCED_IN(21);
+int pthread_condattr_getpshared(const pthread_condattr_t* __attr, int* __shared);
+int pthread_condattr_init(pthread_condattr_t* __attr);
+int pthread_condattr_setclock(pthread_condattr_t* __attr, clockid_t __clock) __INTRODUCED_IN(21);
+int pthread_condattr_setpshared(pthread_condattr_t* __attr, int __shared);
 
-int pthread_cond_broadcast(pthread_cond_t*);
-int pthread_cond_destroy(pthread_cond_t*);
-int pthread_cond_init(pthread_cond_t*, const pthread_condattr_t*);
-int pthread_cond_signal(pthread_cond_t*);
-int pthread_cond_timedwait(pthread_cond_t*, pthread_mutex_t*, const struct timespec*);
-int pthread_cond_wait(pthread_cond_t*, pthread_mutex_t*);
+int pthread_cond_broadcast(pthread_cond_t* __cond);
+int pthread_cond_destroy(pthread_cond_t* __cond);
+int pthread_cond_init(pthread_cond_t* __cond, const pthread_condattr_t* __attr);
+int pthread_cond_signal(pthread_cond_t* __cond);
+int pthread_cond_timedwait(pthread_cond_t* __cond, pthread_mutex_t* __mutex, const struct timespec* __timeout);
+int pthread_cond_wait(pthread_cond_t* __cond, pthread_mutex_t* __mutex);
 
-int pthread_create(pthread_t*, pthread_attr_t const*, void* (*start_routine)(void*), void*);
-int pthread_detach(pthread_t);
-void pthread_exit(void*) __noreturn;
+int pthread_create(pthread_t* __pthread_ptr, pthread_attr_t const* __attr, void* (*__start_routine)(void*), void*);
+int pthread_detach(pthread_t __pthread);
+void pthread_exit(void* __return_value) __noreturn;
 
-int pthread_equal(pthread_t, pthread_t);
+int pthread_equal(pthread_t __lhs, pthread_t __rhs);
 
-int pthread_getattr_np(pthread_t, pthread_attr_t*);
+int pthread_getattr_np(pthread_t __pthread, pthread_attr_t* __attr);
 
-int pthread_getcpuclockid(pthread_t, clockid_t*);
+int pthread_getcpuclockid(pthread_t __pthread, clockid_t* __clock);
 
-int pthread_getschedparam(pthread_t, int*, struct sched_param*);
+int pthread_getschedparam(pthread_t __pthread, int* __policy, struct sched_param* __param);
 
-void* pthread_getspecific(pthread_key_t);
+void* pthread_getspecific(pthread_key_t __key);
 
-pid_t pthread_gettid_np(pthread_t) __INTRODUCED_IN(21);
+pid_t pthread_gettid_np(pthread_t __pthread) __INTRODUCED_IN(21);
 
-int pthread_join(pthread_t, void**);
+int pthread_join(pthread_t __pthread, void** __return_value_ptr);
 
-int pthread_key_create(pthread_key_t*, void (*)(void*));
-int pthread_key_delete(pthread_key_t);
+int pthread_key_create(pthread_key_t* __key_ptr, void (*__key_destructor)(void*));
+int pthread_key_delete(pthread_key_t __key);
 
-int pthread_mutexattr_destroy(pthread_mutexattr_t*);
-int pthread_mutexattr_getpshared(const pthread_mutexattr_t*, int*);
-int pthread_mutexattr_gettype(const pthread_mutexattr_t*, int*);
-int pthread_mutexattr_init(pthread_mutexattr_t*);
-int pthread_mutexattr_setpshared(pthread_mutexattr_t*, int);
-int pthread_mutexattr_settype(pthread_mutexattr_t*, int);
+int pthread_mutexattr_destroy(pthread_mutexattr_t* __attr);
+int pthread_mutexattr_getpshared(const pthread_mutexattr_t* __attr, int* __shared);
+int pthread_mutexattr_gettype(const pthread_mutexattr_t* __attr, int* __type);
+int pthread_mutexattr_init(pthread_mutexattr_t* __attr);
+int pthread_mutexattr_setpshared(pthread_mutexattr_t* __attr, int __shared);
+int pthread_mutexattr_settype(pthread_mutexattr_t* __attr, int __type);
 
-int pthread_mutex_destroy(pthread_mutex_t*);
-int pthread_mutex_init(pthread_mutex_t*, const pthread_mutexattr_t*);
-int pthread_mutex_lock(pthread_mutex_t*);
-int pthread_mutex_timedlock(pthread_mutex_t*, const struct timespec* )
+int pthread_mutex_destroy(pthread_mutex_t* __mutex);
+int pthread_mutex_init(pthread_mutex_t* __mutex, const pthread_mutexattr_t* __attr);
+int pthread_mutex_lock(pthread_mutex_t* __mutex);
+int pthread_mutex_timedlock(pthread_mutex_t* __mutex, const struct timespec* __timeout)
   __INTRODUCED_IN(21);
-int pthread_mutex_trylock(pthread_mutex_t*);
-int pthread_mutex_unlock(pthread_mutex_t*);
+int pthread_mutex_trylock(pthread_mutex_t* __mutex);
+int pthread_mutex_unlock(pthread_mutex_t* __mutex);
 
 #if __ANDROID_API__ < 21
 /*
@@ -164,68 +164,64 @@
  *  * https://github.com/android-ndk/ndk/issues/423
  *  * https://stackoverflow.com/q/44580542/632035
  */
-int pthread_mutex_lock_timeout_np(pthread_mutex_t* mutex, unsigned msecs);
-int pthread_cond_timeout_np(pthread_cond_t* cond, pthread_mutex_t* mutex, unsigned msecs);
-int pthread_cond_timedwait_monotonic_np(pthread_cond_t*, pthread_mutex_t*, const struct timespec*);
-int pthread_cond_timedwait_relative_np(pthread_cond_t* cond, pthread_mutex_t* mutex,
-                                       const struct timespec* reltime);
+int pthread_mutex_lock_timeout_np(pthread_mutex_t* __mutex, unsigned __timeout_ms);
+int pthread_cond_timeout_np(pthread_cond_t* __cond, pthread_mutex_t* __mutex, unsigned __timeout_ms);
+int pthread_cond_timedwait_monotonic_np(pthread_cond_t* __cond, pthread_mutex_t* __mutex, const struct timespec* __timeout);
+int pthread_cond_timedwait_relative_np(pthread_cond_t* __cond, pthread_mutex_t* __mutex, const struct timespec* __relative_timeout);
 #endif
 
-int pthread_once(pthread_once_t*, void (*init_routine)(void));
+int pthread_once(pthread_once_t* __once, void (*__init_routine)(void));
 
-int pthread_rwlockattr_init(pthread_rwlockattr_t*);
-int pthread_rwlockattr_destroy(pthread_rwlockattr_t*);
-int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t*, int*);
-int pthread_rwlockattr_setpshared(pthread_rwlockattr_t*, int);
-int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t*, int*)
+int pthread_rwlockattr_init(pthread_rwlockattr_t* __attr);
+int pthread_rwlockattr_destroy(pthread_rwlockattr_t* __attr);
+int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t* __attr, int* __shared);
+int pthread_rwlockattr_setpshared(pthread_rwlockattr_t* __attr, int __shared);
+int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t* __attr, int* __kind)
   __INTRODUCED_IN(23);
-int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t*, int) __INTRODUCED_IN(23);
+int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t* __attr, int __kind) __INTRODUCED_IN(23);
 
-int pthread_rwlock_destroy(pthread_rwlock_t*);
-int pthread_rwlock_init(pthread_rwlock_t*, const pthread_rwlockattr_t*);
-int pthread_rwlock_rdlock(pthread_rwlock_t*);
-int pthread_rwlock_timedrdlock(pthread_rwlock_t*, const struct timespec*);
-int pthread_rwlock_timedwrlock(pthread_rwlock_t*, const struct timespec*);
-int pthread_rwlock_tryrdlock(pthread_rwlock_t*);
-int pthread_rwlock_trywrlock(pthread_rwlock_t*);
-int pthread_rwlock_unlock(pthread_rwlock_t*);
-int pthread_rwlock_wrlock(pthread_rwlock_t*);
+int pthread_rwlock_destroy(pthread_rwlock_t* __rwlock);
+int pthread_rwlock_init(pthread_rwlock_t* __rwlock, const pthread_rwlockattr_t* __attr);
+int pthread_rwlock_rdlock(pthread_rwlock_t* __rwlock);
+int pthread_rwlock_timedrdlock(pthread_rwlock_t* __rwlock, const struct timespec* __timeout);
+int pthread_rwlock_timedwrlock(pthread_rwlock_t* __rwlock, const struct timespec* __timeout);
+int pthread_rwlock_tryrdlock(pthread_rwlock_t* __rwlock);
+int pthread_rwlock_trywrlock(pthread_rwlock_t* __rwlock);
+int pthread_rwlock_unlock(pthread_rwlock_t* __rwlock);
+int pthread_rwlock_wrlock(pthread_rwlock_t* __rwlock);
 
 #if __ANDROID_API__ >= __ANDROID_API_N__
-int pthread_barrierattr_init(pthread_barrierattr_t* attr) __INTRODUCED_IN(24);
-int pthread_barrierattr_destroy(pthread_barrierattr_t* attr) __INTRODUCED_IN(24);
-int pthread_barrierattr_getpshared(const pthread_barrierattr_t* attr,
-                                   int* pshared) __INTRODUCED_IN(24);
-int pthread_barrierattr_setpshared(pthread_barrierattr_t* attr, int pshared)
-  __INTRODUCED_IN(24);
+int pthread_barrierattr_init(pthread_barrierattr_t* __attr) __INTRODUCED_IN(24);
+int pthread_barrierattr_destroy(pthread_barrierattr_t* __attr) __INTRODUCED_IN(24);
+int pthread_barrierattr_getpshared(const pthread_barrierattr_t* __attr, int* __shared) __INTRODUCED_IN(24);
+int pthread_barrierattr_setpshared(pthread_barrierattr_t* __attr, int __shared) __INTRODUCED_IN(24);
 #endif
 
 #if __ANDROID_API__ >= __ANDROID_API_N__
-int pthread_barrier_init(pthread_barrier_t*, const pthread_barrierattr_t*, unsigned)
-  __INTRODUCED_IN(24);
-int pthread_barrier_destroy(pthread_barrier_t*) __INTRODUCED_IN(24);
-int pthread_barrier_wait(pthread_barrier_t*) __INTRODUCED_IN(24);
+int pthread_barrier_init(pthread_barrier_t* __barrier, const pthread_barrierattr_t* __attr, unsigned __count) __INTRODUCED_IN(24);
+int pthread_barrier_destroy(pthread_barrier_t* __barrier) __INTRODUCED_IN(24);
+int pthread_barrier_wait(pthread_barrier_t* __barrier) __INTRODUCED_IN(24);
 #endif
 
 #if __ANDROID_API__ >= __ANDROID_API_N__
-int pthread_spin_destroy(pthread_spinlock_t*) __INTRODUCED_IN(24);
-int pthread_spin_init(pthread_spinlock_t*, int) __INTRODUCED_IN(24);
-int pthread_spin_lock(pthread_spinlock_t*) __INTRODUCED_IN(24);
-int pthread_spin_trylock(pthread_spinlock_t*) __INTRODUCED_IN(24);
-int pthread_spin_unlock(pthread_spinlock_t*) __INTRODUCED_IN(24);
+int pthread_spin_destroy(pthread_spinlock_t* __spinlock) __INTRODUCED_IN(24);
+int pthread_spin_init(pthread_spinlock_t* __spinlock, int __shared) __INTRODUCED_IN(24);
+int pthread_spin_lock(pthread_spinlock_t* __spinlock) __INTRODUCED_IN(24);
+int pthread_spin_trylock(pthread_spinlock_t* __spinlock) __INTRODUCED_IN(24);
+int pthread_spin_unlock(pthread_spinlock_t* __spinlock) __INTRODUCED_IN(24);
 #endif
 
 pthread_t pthread_self(void) __attribute_const__;
 
 #if defined(__USE_GNU)
-int pthread_getname_np(pthread_t, char*, size_t) __INTRODUCED_IN(26);
+int pthread_getname_np(pthread_t __pthread, char* __buf, size_t __n) __INTRODUCED_IN(26);
 #endif
 /* TODO: this should be __USE_GNU too. */
-int pthread_setname_np(pthread_t, const char*);
+int pthread_setname_np(pthread_t __pthread, const char* __name);
 
-int pthread_setschedparam(pthread_t, int, const struct sched_param*);
+int pthread_setschedparam(pthread_t __pthread, int __policy, const struct sched_param* __param);
 
-int pthread_setspecific(pthread_key_t, const void*);
+int pthread_setspecific(pthread_key_t __key, const void* __value);
 
 typedef void (*__pthread_cleanup_func_t)(void*);
 
@@ -255,4 +251,4 @@
 
 __END_DECLS
 
-#endif /* _PTHREAD_H_ */
+#endif