Re: [boost] [serialization] Serialisation/deserialisation offloating-point values

From: Peter Broadwell (peter_at_[hidden])
Date: 2006-03-15 15:42:43

Note the difference between the "definition" formulae of 3010/10000
and the suggested formulae using 3030/10000.

Perhaps this is on purpose, if not may explain why the tests done
later in this thread  wich use the 3030/10000 version had troubles?

;;peter

Paul A Bristow wrote:
 > [...]
 > For C++, using numeric limits,
 >
 > So it is convenient instead to use the following formula which can be
 > calculated at compile time:
 > 2 + std::numeric_limits<double>::digits * 3010/10000;
 >
 > [...]
 > and I suggest that this should be:
 >
 > os << std::setprecision(2 + std::numeric_limits<double>::digits *
 > 3030/10000);
 >
 > HTH
 >
 > Paul
 >
 >
 >