Re: [boost] Is there a macro to test ifstd::numerc_limits<>::max_digits10 is supported by a platform?

A proposed (but not reverted) fix for

Trac #5758: Boost.Test Floating-point comparison diagnostic output does not support radix 10

if( std::numeric_limits<T>::is_specialized && std::numeric_limits<T>::radix == 10 ) ostr.precision( 2 + std::numeric_limits<T>::max_digits10); // Assume that max_digits10 is provided for all radix 10 as they are quite new, // and anyway Kahan formula will not work for decimal.

has caused trouble on platforms that do not yet support

std::numeric_limits<T>::max_digits10

We need a macro perhaps BOOST_NO_NUMERIC_LIMITS_ MAX_DIGITS10

that will prevent the compiler seeing this code if max_digits10 is not supported.

Try BOOST_NO_NUMERIC_LIMITS_LOWEST as a proxy? John.