Gem::SafeMarshal::Visitors::ToRuby#visit_Gem_SafeMarshal_Elements_Bignum

# File tmp/rubies/ruby-4.0.0/lib/rubygems/safe_marshal/visitors/to_ruby.rb, line 241
def visit_Gem_SafeMarshal_Elements_Bignum(b)
  result = 0
  b.data.each_byte.with_index do |byte, exp|
    result += (byte * 2**(exp * 8))
  end

  case b.sign
  when 43 # ?+
    result
  when 45 # ?-
    -result
  else
    raise FormatError, "Unexpected sign for Bignum #{b.sign.chr.inspect} (#{b.sign})"
  end
end