Re: [Boost-testing] [QNX6][math] Test failures with Dinkumwarelibrary(qcc-3.3.5-cpp)

From: Jim Douglas (jim_at_[hidden])
Date: 2006-01-24 04:43:28

John,

Before I submit this point to QNX please comment on the text below taken 
from the QNX documentation for the Dinkumware C++ library.

[JD]
>>The way this library is constructed seems to be that in general if you
>>use the C++ 'c*' equivalent of a C '*.h' header, all the functions get
>>promoted into the std namespace. This is not the first time we have
>>encountered this problem.
> 
[JM]
> Just to clarify: if the symbol is part of the C++ std then it should be in 
> namespace std only when you include the <c*> header.  However, symbols that 
> are not part of the C++ std (log1p, expm1 etc) should *never* be in 
> namespace std, at least according to the letter of the std.

//-- QNX/Dinkumware docs for 'cmath'.
(c) 1992-2002 by P.J.Plauger. All rights reserved.

Include the standard header <cmath> to define the macros traditionally 
defined in the Standard C library header <math.h>. Including this header 
also ensures that the names declared with external linkage in the 
Standard C library header are declared in the std namespace. In this 
implementation, the names may or may not also be declared in the global 
namespace, depending on the specific translation environment.

#if <TRADITIONAL C HEADERS>
     #include <math.h>
#endif

//--------------------------------

Jim