code: drawterm

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ref: daf2ab4550e555cdb6c58f2a9e647c2259a634de
dir: /posix-port/tas.c/

#include "u.h"
#include "libc.h"

int
tas(int *x)
{
	return __atomic_test_and_set(x, __ATOMIC_ACQ_REL);
}