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* [Bug c++/58815] New: Casting/Conversion operator for std::decimal not supported
@ 2013-10-20 17:34 q1 at oxyba dot de
  2013-10-20 17:59 ` [Bug c++/58815] " daniel.kruegler at googlemail dot com
                   ` (14 more replies)
  0 siblings, 15 replies; 16+ messages in thread
From: q1 at oxyba dot de @ 2013-10-20 17:34 UTC (permalink / raw)
  To: gcc-bugs

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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).
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From: "mikpelinux at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/58805] [4.8/4.9 Regression] Inline assembly wrongly optimized out when inside a conditional
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX805

Mikael Pettersson <mikpelinux at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mikpelinux at gmail dot com

--- Comment #9 from Mikael Pettersson <mikpelinux at gmail dot com> ---
Created attachment 31055
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id1055&actioníit
adjusted test case

Adjusted test case, aborts when the wrong-code occurs, exits 0 otherwise.  This
wrong-code started with r186447.  CC:ing author.


^ permalink raw reply	[flat|nested] 16+ messages in thread
end of thread, other threads:[~2013-10-23 11:50 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-10-20 17:34 [Bug c++/58815] New: Casting/Conversion operator for std::decimal not supported q1 at oxyba dot de
2013-10-20 17:59 ` [Bug c++/58815] " daniel.kruegler at googlemail dot com
2013-10-21 21:50 ` q1 at oxyba dot de
2013-10-21 23:38 ` janis at gcc dot gnu.org
2013-10-21 23:50 ` janis at gcc dot gnu.org
2013-10-22  9:04 ` paolo.carlini at oracle dot com
2013-10-22  9:11 ` paolo.carlini at oracle dot com
2013-10-22  9:12 ` daniel.kruegler at googlemail dot com
2013-10-22 15:29 ` janis at gcc dot gnu.org
2013-10-22 15:43 ` paolo.carlini at oracle dot com
2013-10-22 17:43 ` q1 at oxyba dot de
2013-10-22 18:07 ` janis at gcc dot gnu.org
2013-10-22 18:20 ` paolo.carlini at oracle dot com
2013-10-22 20:02 ` [Bug libstdc++/58815] " paolo.carlini at oracle dot com
2013-10-23 11:48 ` paolo at gcc dot gnu.org
2013-10-23 11:50 ` paolo.carlini at oracle dot com

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