Re: [boost] [math] Support for libquadmath/ __float128

Subject: Re: [boost] [math] Support for libquadmath/ __float128
From: John Maddock (boost.regex_at_[hidden])
Date: 2013-02-25 11:28:11

>>> 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-and-constants

Including that header will only work (as in not generate a compiler error) 
if the compiler supports __float128 as a native type, which is what we want 
to work out... basically whether the GCC build was configured to support it 
or not.

John.