doc/tutorial/functions.stp


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# Red Hat convention
function system_uid_p (u) { return u < 500 }

# kernel device number assembly macro
function makedev (major,minor) { return major << 20 | minor }

function trace_common ()
{
  printf("%d %s(%d)", gettimeofday_s(), execname(), pid())
  # no return value
} 

function fibonacci (i)
{
  if (i < 1) return 0
  else if (i < 2) return 1
  else return fibonacci(i-1) + fibonacci(i-2)
}