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Re: [PATCH] Implement "P0631R4 Math Constants" for C++20


On Wed, 31 Jul 2019, Jonathan Wakely wrote:

The values of the constants are taken from Glibc where the equivalent
constant exists, or by rounding the actual constant to the same number
of digits as the Glibc constants have.

How does it behave with __float128? I think that with -std=gnu++2a, it counts as a floating point type, but the constant first becomes a long double and thus loses precision.

--
Marc Glisse


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