Fixes#2392.
Change includes of <cmath> to <boost/config/no_tr1/config.hpp>.
Previously if Boost.TR1 was in the include path then including <cmath> pulls in all the new TR1 math functions, which in turn also requires linking to an external library. With auto-linking support this requires that library to have been built and be present in the library search path, even if the actual library under use is header only.
[SVN r49314]
as it doesn't always have the C++ overloads. Fixes#2264.
Merged revisions 48529,48674 via svnmerge from
https://svn.boost.org/svn/boost/trunk
........
r48529 | danieljames | 2008-09-02 11:31:26 +0100 (Tue, 02 Sep 2008) | 1 line
Always use c99 float function overloads on Dinkumware, as it doesn't always
have the C++ overloads. Refs #2264.
........
r48674 | danieljames | 2008-09-08 22:06:16 +0100 (Mon, 08 Sep 2008) | 7 lines
Reinstate the old choice of float functions on Dinkumware for all compilers
other than Visual C++.
It turns out that Borland uses Dinkumware but doesn't have the C99 float
overloads, so it only seems realistic to assume their existence on Visual C++.
Refs #2264.
........
[SVN r48739]
John Maddock
Daniel James
Beman Dawes