module BigMath

def E(prec)


#=> "0.271828182845904523536028752390026306410273e1"
BigMath.E(10).to_s

digits of precision, +numeric+.
Computes e (the base of natural logarithms) to the specified number of

E(numeric) -> BigDecimal
call-seq: 
def E(prec)
  raise ArgumentError, "Zero or negative precision for E" if prec <= 0
  BigMath.exp(1, prec)
end