method

sqrt

ruby latest stable - Class: BigMath

sqrt(x, prec)

public

Computes the square root of decimal to the specified number of digits of precision, numeric.

BigMath.sqrt(BigDecimal('2'), 16).to_s
#=> "0.1414213562373095048801688724e1"

# File ext/bigdecimal/lib/bigdecimal/math.rb, line 43
  def sqrt(x, prec)
    x.sqrt(prec)
  end