number_with_precision(number, precision=3) public

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)  # => 111.23
 number_with_precision(13, 5)        # => 13.00000
 number_with_precision(389.32314, 0) # => 389
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July 9, 2010 - (>= v2.2.1)
0 thanks

Separator default is not always "." but depends on locale

Locale en:

number_with_precision(111.2345)  # => 111.235

Locale fr-FR:

number_with_precision(111.2345)  # => 111,235

Same with delimiter.