TR29124 C++ Special Maths - Make <math.h> pull functions into global namespace.

[Jonathan Wakely]

On 21/01/16 19:07 -0500, Ed Smith-Rowland wrote:
>On 01/21/2016 07:29 AM, Jonathan Wakely wrote:
>>On 20/01/16 20:30 -0500, Ed Smith-Rowland wrote:
>>>Now that libstdc++ installs a proper math.h we can piggyback on 
>>>that to put in the last bit of TR29124.
>>>
>>>This patch adds the math special functions to 
>>>c_compatibility/math.h in the global namespace.
>>>I remove the XFAILs from the compile_2.cc tests.
>>>
>>>This converts 21 XFAILs into 21 PASSes.
>>>
>>>Tested on x86_64-linux.
>>>
>>>I understand if this is too late.
>>>I'll put it up on trunk and backport after stage 1 reopens.
>>>
>>>Meanwhile I'll commit this to the tr29124 branch.
>>
>>I'm inclined to say the change is OK for trunk now. We've added math.h
>>and we've added the special functions, it would be good if the two new
>>things work together.
>>
>>However ...
>>
>>>Index: include/c_compatibility/math.h
>>>===================================================================
>>>--- include/c_compatibility/math.h    (revision 232610)
>>>+++ include/c_compatibility/math.h    (working copy)
>>>@@ -75,70 +75,71 @@
>>>#endif
>>>
>>>#if __STDCPP_WANT_MATH_SPEC_FUNCS__ == 1
>>>-using std::assoc_laguerref
>>
>>This doesn't look like the right patch, because these lines aren't in
>>the version on trunk.
>>
>>
>I must have given you a negative patch relative to the tr29124 
>branch...  Sigh.
>I'll make a new one.
>Those lines have to be *added*.
>Sorry.

No problem. It looks like it was a partial patch, adding semi-colons
to the using declarations, so you just need to diff against the
previous revision instead.