Looking for good source of information on Intel internal floating-point representations.
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From: Gavin Scott on 10 Feb 2010 14:18 Terje Mathisen <"terje.mathisen at tmsw.no"> wrote: > The difference becomes visible if you do a set of calculations which > will temporarily over- or under-flow a double precision variable, but > subsequent operations bring it back into range. > It is only when you store variables to memory that they get rounded to > the actual double format, which also means that a value which will > underflow in memory can keep full precision as long as it is stored in a > register, but save/restore to memory will destroy it. What happens on a context switch? G. |