Method: Flt::FormatBase#next_plus

Defined in:
lib/float-formats/classes.rb

#next_plus ⇒ Object

Computes the next adjacent floating point value. Accepts either a Value or a byte String. Returns a Value. TODO: use Flt



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# File 'lib/float-formats/classes.rb', line 200

def next_plus
  s,f,e = self.class.canonicalized(@sign,@significand,@exponent,true)
  return minus.next_minus.minus if s<0 && e!=:zero
  s = -s if e==:zero && s<0

  if e!=:nan && e!=:infinity
    if f==0
      if form_class.gradual_underflow?
        e = form_class.radix_min_exp(:integral_significand)
        f = 1
      else
        e = form_class.radix_min_exp(:integral_significand)
        f = form_class.minimum_normalized_integral_significand
      end
    else
      f += 1
    end
    if f>=form_class.radix_power(form_class.significand_digits)
      f /= form_class.radix
      if e==:denormal
        e = form_class.radix_min_exp(:integral_significand)
      else
        e += 1
      end
      if e>form_class.radix_max_exp(:integral_significand)
        e = :infinity
        f = 0
      end
    end
    form_class.new s, f, e
  end
end