Dnia 2009-06-23, wto o godzinie 17:14 +0000, BCS pisze: > Reply to Witold,
> > this is exactly the same think which cpu already does when dealing > > with doubles and floats. internal computations are performed in ext. > > precision, and written somewhere, truncating to 64bits. > > > > You misread me; if you need computation to exactly match 32 or 64bit math, > you will need to round after every single operation (+, -, *, /, etc.), what > most systems do is use full internal precision for intermediate value and > round only when the value is stored to a variable. If you don't need > bit-for-bit > matches, then 80-bit matches IEEE-754 semantics just with more bits of > precision. > > We both know this, so EOT. :)
