round =: 1&$: : (dyad def '<.@:(1r2+])&.:(%&x) y')
   assert 1 -: round 1.2
   assert 1.25 -: 0.25 round 1.2

   Round =: adverb def '<.@:(1r2+])&.:(%&m) y'

Is there a tacit definition of round using under?
What is the tacit definition of adverb Round?
Thanks, Dave.



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