Quoting Andreas Fabri:
even with the release candidate for 1_34 I get this error message
c:/Boost/include/boost-1_34\boost/numeric/interval/hw_rounding.hpp(38) : fatal error C1189: #error : Boost.Numeric.Interval: Please specify rounding control mechanism.
on AMD Turion with XP 64 and VC 2005.
Can anybody fix this or give a hint what I have to find out on mt platform to fix it.
I have access neither to this processor nor to this operating system nor to this compiler, so it's a bit complicated to tell you how to fix it. Can you tell me on which FPU (x87, SSE2, 3Dnow) the floating-point computations are executed on your platform? If your platform supports the C99 fenv.h rounding control, then you don't have to know the FPU, you can just modify the hw_rounding.hpp file at line 28 by adding a check for a macro identifying your system. Please report to this mailing-list which macro you used so that other users can benefit from it and I can put it into CVS. If your platform uses the x87 instruction set, then the situation is similar, but this time at line 20. Though it would surprise me if that is the case, as the x87 part was kind of deprecated with the arrival of the x86-64 architecture (when you say "XP 64", it means your processor is 64bit, right?). If your platform relies on another FPU, then you will have to look at how to manually control the rounding direction for it. You can take a look at the {x86,ppc,sparc}_rounding_control.hpp files to see how the FPU is handled on other architectures. Once again, please post the resulting file on this mailing-list so that it can be included. Best regards, Guillaume