Formats a number with the specified level of precision (e.g., 112.32 has a precision of 2). The default level of precision is 3.

Examples

number_with_precision(111.2345)     # => 111.235
number_with_precision(111.2345, 2)  # => 111.24
number_with_precision(13, 5)        # => 13.00000
number_with_precision(389.32314, 0) # => 389

Source Code

# File action_view/helpers/number_helper.rb, line 143
def number_with_precision(number, precision=3)
  "%01.#{precision}f" % number
rescue
  number
end