http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58815
Bug ID: 58815
Summary: Casting/Conversion operator for std::decimal not
supported
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: q1 at oxyba dot de
it is not really a bug a rather something missing.
example:
#include<decimal/decimal>
int main(){
std::decimal::decimal64 x(101.5001);
long y = static_cast<long>(x); // throws an error
return 0;
}
this will throw an error
"... error: invalid static_cast from type ‘std::decimal::decimal64’ to type
‘long int’..."
i know that type working would work using methods of std::decimal::decimal64,
e.g.
#include<decimal/decimal>
int main(){
std::decimal::decimal64 x(101.5001);
long long y = std::decimal::decimal64_to_long_long(x); // look here
return 0;
}
As I cannot cicumvent the problem with outside class definition, I please you
to add conversion operators to std::decimal, e.g.
std::decimal::decimal64::operator long(){return ...;}
In general std::decimal is really immature, e.g. no operator<<, not supported
in <traits> (it says std::decimal is a floating point).
