Joerg Sonnenberger <joerg%britannica.bec.de@localhost> writes: > On Sat, May 04, 2013 at 07:14:00AM -0400, Greg Troxel wrote: >> So are you proposing then >> >> 1) Make gcc and clang use larger storage (maybe already true) and avoid >> SSE instructions for variables declared as long double? > > That's already the case. long double computations always use the i387. > The point is that I want them to get the extended precision. If what you want to do now is to change the way rounding is handled so that: long double variables get the 80-bit precision without making (non-long) doubles get results that don't comply with IEEE754 (by using extended precision intermedate values) then that sounds fine. But I can't really tell what you want to change.
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