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Subject: Re: [boost] [config] polygon library long long, long double portability
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-06-25 15:25:10


Simonson, Lucanus J wrote:
> I use long long and long double in the configuration of my integer arithmetic traits. I'd like to guard those usages with boost macros to allow the code to compile on platforms that don't support long long and long double (replace with long and double respectively) but I can only find a BOOST_HAS_LONG_LONG macro (which is apparently not documented) and not a corresponding BOOST_HAS_LONG_DOUBLE. Is there some other macro I can use to detect BOOST_HAS_LONG_DOUBLE or a typedef I can use that is already set to long double if available and double otherwise?

long double is standard C++. long long is only the
the new standard.

You might also consider using boost::int64_t from
boost/cstdint.hpp guarded by BOOST_NO_INT64_T

msvc has 64 bit ints, but doesn't call them long long.

In Christ,
Steven Watanabe

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