https://d.puremagic.com/issues/show_bug.cgi?id=3749
--- Comment #15 from Martin Nowak <[email protected]> 2014-01-08 17:07:23 PST --- (In reply to comment #13) > We don't implement y2lx in GDC, so it uses the !INLINE_Y2LX implemenatation. > :) At runtime? I'm quite surprised to hear that, isn't the performance a bummer compared to the X87 instruction? On other platforms this might not an argument though. (In reply to comment #14) > > > Something like exponent(float), signbit(float), mantissa(float)? > > Something like this was suggested and discarded IIRC. I'm not sure how I > would > be able to do this from within GCC's infrastructure - or at least return > meaningful / usable data in the case of exponent and mantissa bits. :) Well the parse(Float)(Float f) function only uses normal CTFE floating point computations to determine these values. https://github.com/D-Programming-Language/druntime/blob/a977a65ac7df366c002033c43e11cd05925a25fb/src/core/internal/convert.d#L91 It's quite complex, so you can see how desperate we are to get CT hashing. Although we might disable CT hashing for floats if this gets out of hand. -- Configure issuemail: https://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
