shithub: drawcpu

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ref: 8b24f795e2bb2a5d169641ed0fda0e99b69e4466
dir: /tas.c/

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

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