On Tue, 19 Jun 2012, Torbjorn Granlund wrote:

I don't think we require C99 for GMP, only C89.
The ldexpl function was introduced with C99.

Would mpz_get_ld become acceptable with an appropriate autoconf test for ldexpl and a silly loop as a fallback?

Paul, what kind of guarantee would you document for the function? On platforms where long double is binary128 (and double is binary64), we would need a third round for a chance at maximal precision, and again it would be strange to have such a function without full precision...

--
Marc Glisse
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