Module: Atatus::Util::PrecisionValidator Private

Defined in:
lib/atatus/util/precision_validator.rb

Overview

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Rounds half away from zero. If minimum is provided, and the value rounds to 0 (but was not zero to begin with), use the minimum instead.

API:

  • private

Class Method Summary collapse

Class Method Details

.validate(value, precision: 0, minimum: nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/atatus/util/precision_validator.rb', line 29

def validate(value, precision: 0, minimum: nil)
  float = Float(value)
  return nil unless (0.0..1.0).cover?(float)
  return float if float == 0

  multiplier = Float(10**precision)
  rounded = (float * multiplier + 0.5).floor / multiplier
  if rounded == 0 && minimum
    minimum
  else
    rounded
  end
rescue ArgumentError
  nil
end