On 25/02/13 11:16, Paul A. Bristow wrote:
-----Original Message----- From: Boost [mailto:boost-bounces@lists.boost.org] On Behalf Of John Maddock Sent: Monday, February 25, 2013 9:22 AM To: boost@lists.boost.org Subject: Re: [boost] [math] Support for libquadmath/ __float128
So this means that the suffixes L and l are the "longest" floating-point suffixes supported by the language and that the suffixes Q and q are non-portable language extensions. Is this right?
Correct.
So the only way to add Q or q suffixes would be to find a way to query the environment if it is supported. I wonder if GCC with --enable-libquadmath has a kind of query for this.
I haven't found one - gcc-4.7.2 has all sorts of __SIZEOF_XXX__ defines for every last type *except* __float128 and __float80 :-(
Sorry for a possibly stupid questio, but is it not possible to use any of the FLT128_XXX defines listed here: http://gcc.gnu.org/onlinedocs/libquadmath/Typedef-and-constants.html#Typedef... Claas
It won't help now, but is 'more precise types' an issue to raise with WG21 for the next C++ standard?
Or is Multiprecision the way to go?
Paul
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