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sqrt

sqrt(x,prec)

Instance Public methods

Computes the square root of x to the specified number of digits of precision.

BigDecimal.new('2').sqrt(16).to_s

-> "0.14142135623730950488016887242096975E1"

Links:

https://github.com/ruby/ruby/blob/697b53d8a96db8ad797baa5fca37d6cec5d7ca9d/ext/bigdecimal/lib/bigdecimal/math.rb#L40

doc_ruby_on_rails

2015-03-31 10:00:27

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