Computercraft Bry API V1

--Rounds decimals.
--Put input in parenthesis
--Output is (rounded)
function round(number)
  roundUp = (math.ceil(number)-number)
  roundDown = (number - math.floor(number))
    if roundUp <= roundDown then
      rounded = math.ceil(number)
     elseif roundUp > roundDown then
      rounded = math.floor(number)
    end
  return rounded
end

--Clears screen and sets cursor to top
function resetCursor()
  term.clear()
  term.setCursorPos(1, 1)
end

--Checks if a number is even.
function isEven(number)
  if (number/2) == bry.round(number/2) then
    return true
  else
    return false
  end
end

--Emits a 1/2 second redstone pulse.
function redPulse(side)
 redstone.setOutput(side, true)
 sleep(0.5)
 redstone.setOutput(side, false)
end

--Changes terminal text color if it can
function textColor(color)
    if term.isColor() then
        term.setTextColor(color)
    end
end

--Averages a table of numbers
function average(table)
    i = 1
    temp = 0
    while i < #table + 1 do
        temp = temp + table[i]
        i = i + 1
    end
    result = temp/#table
    return(result)
end