search for: simultaenous

Displaying 8 results from an estimated 8 matches for "simultaenous".

2006 Nov 23
4
Ryacas and fractions with simultaenously very large numerators and denominators
...on(Inf^1.260864167e+117/Inf^6.304320836e+116) > Eval(x) [1] NaN No luck this way. However, I am successful with > y <- yacas("(3/2)^400") > y expression(7.05507910865533e+190/2.58224987808691e+120) > Eval(y) [1] 2.732144e+70 If Ryacas/Yacas cannot multiply fractions with simultaenously very large numerators and denominators, what else should I use? Thanks in advnace, Paul
2009 Jan 28
5
[LLVMdev] Copy Instructions?
...// y = phi(y.0, x) > > > > Yes, that's what mem2reg ends up with. > > Why is this a problem? All phis execute "atomically". What problem > are you seeing in practice? I'm getting incorrect answers. How can a set of phis with a dependence execute simultaenously? There is only one definition of x and it has to happen before the use of x in the phi defining y, doesn't it? Owen says: > In this case, you can resolve it by inserting an extra PHI node: > x.0 = 0 > y.0 = 0 > do > foo = phi(undef, x) > x = phi(x.0, y) &...
2009 Jan 28
0
[LLVMdev] Copy Instructions?
On Jan 28, 2009, at 9:50 AM, David Greene wrote: > How can a set of phis with a dependence execute simultaenously? > There is only one definition of x and it has to happen before the > use of > x in the phi defining y, doesn't it? > The "normal" answer would be that they execute atomically only at the IR level. Part of the out-of-SSA translation that happens in the backend i...
2009 Jan 28
0
[LLVMdev] Copy Instructions?
On Jan 28, 2009, at 9:50 AM, David Greene wrote: >> Why is this a problem? All phis execute "atomically". What problem >> are you seeing in practice? > > I'm getting incorrect answers. > > How can a set of phis with a dependence execute simultaenously? > There is only one definition of x and it has to happen before the > use of > x in the phi defining y, doesn't it? PHIs can't depend on each other. > Again, how can simultaenous execution of statements with a > dependence have any > meaning? There is no such thi...
2009 Jan 28
1
[LLVMdev] Copy Instructions?
...28, 2009, at 9:50 AM, David Greene wrote: > >> Why is this a problem? All phis execute "atomically". What problem > >> are you seeing in practice? > > > > I'm getting incorrect answers. > > > > How can a set of phis with a dependence execute simultaenously? > > There is only one definition of x and it has to happen before the > > use of > > x in the phi defining y, doesn't it? > > PHIs can't depend on each other. So just to be clear, this means that all phi uses are considered to execute before any phi derfs?...
2009 Jan 28
0
[LLVMdev] Copy Instructions?
On Jan 28, 2009, at 9:06 AM, David Greene wrote: > On Tuesday 27 January 2009 18:28, Eli Friedman wrote: > >> You can use a no-op bitcast for scalars, but there isn't any reliable >> way to do it for all first-class values. > > Guh. > >> That said, I don't quite follow the issue. This is SSA, so the >> only way a >> value can change is if
2009 Jan 28
4
[LLVMdev] Copy Instructions?
On Tuesday 27 January 2009 18:28, Eli Friedman wrote: > You can use a no-op bitcast for scalars, but there isn't any reliable > way to do it for all first-class values. Guh. > That said, I don't quite follow the issue. This is SSA, so the only way a > value can change is if you change the code. This isn't (yet) SSA. This is mem2reg turning things into SSA. >
2009 Jan 27
1
Old Thunderbird problem - need a fix
I've been having a Dovecot/Thunderbird problem for about a year now and I need a fix. When I restart dovecot everything is fine but as the day progresses thing start deteriorating. When I empty my trash folder it doesn't empty. I get an indication that email has arrived in my inbox by the unread message count but can't access it. Messages arrive by appear to be empty. Folders that