http://d.puremagic.com/issues/show_bug.cgi?id=4783

           Summary: atomicOp!"^^" doesn't work b/c it doesn't have access
                    to std.math
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: druntime
        AssignedTo: sean@invisibleduck.org
        ReportedBy: dsimcha@yahoo.com


--- Comment #0 from David Simcha <dsimcha@yahoo.com> 2010-09-01 07:34:24 PDT ---
import core.atomic;

void main() {
    int num1 = 1;
    int num2 = 1;
    int res = atomicOp!"^^"(num1, num2);
}


Errors:

d:\dmd2\windows\bin\..\..\src\druntime\import\core\atomic.di(96): Error: must
import std.math to use ^^ operator
d:\dmd2\windows\bin\..\..\src\druntime\import\core\atomic.di(6): Error:
template instance core.atomic.atomicOp!("^^",int,int) error instantiating

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Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |clugdbug@yahoo.com.au


--- Comment #1 from Don <clugdbug@yahoo.com.au> 2010-09-01 07:55:12 PDT ---
That's correct. You need to import std.math if you want to use ^^.

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--- Comment #2 from Don <clugdbug@yahoo.com.au> 2010-09-01 07:59:05 PDT ---
(In reply to comment #1)
> That's correct. You need to import std.math if you want to use ^^.
Oh sorry. Misunderstood. Yes, ^^ should not be used anywhere in core.*

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--- Comment #3 from David Simcha <dsimcha@yahoo.com> 2010-09-01 08:10:51 PDT ---
Then if ^^ isn't going to be usable w/o importing std.math anytime soon, I guess we need to get rid of it from core.atomic.

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--- Comment #4 from David Simcha <dsimcha@yahoo.com> 2010-09-01 08:38:37 PDT ---
...or, since the whole thing is based on doing the operation and CASing back the result, we could make a version of atomicOp that takes an arbitrary lambda expression.

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--- Comment #5 from Don <clugdbug@yahoo.com.au> 2010-09-01 11:03:58 PDT ---
(In reply to comment #3)
> Then if ^^ isn't going to be usable w/o importing std.math anytime soon, I guess we need to get rid of it from core.atomic.

Yes. Something so high level has no business being in core. pow() for floating point exponents is a *huge* function.

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