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2017 Sep 04
0
NHW Project - fast discrete wavelet transform
Hello,
I forgot in my last reply that my DWT implementation can be speed up, for
example I'm doing for now:
for (;_X1<_E_;_X1++,_RES+=2) //dilatation
{
_RES[0]=_X1[0]<<3;
_RES[1]=(_X1[1]+_X1[0])<<2;
}
then
for (;_X2<_E_;_X2++,_RES+=2) //details
{
_RES[0]-=(_X2[1]+_X2[0])<<1;
_RES[1]+=6*_X2[1]-_X2[2]-_X2[0];
}
whereas I can do in...
2011 Aug 31
2
reshape/aggregate
...belong
to the same group and the same time and end up with a dataframe with the
columns time, group, mean and sd that contains the calculated values for
every group at every time point only once (12).
What is the most elegant way to do this? Oh, and I would like to avoid
renaming columns (like the _X1/_X2 created by casting with multiple
functions), if possible.
I am sure that this is pretty basic, but I have already wasted a ridiculous
amount of time on this.
Thanks,
Kai
[[alternative HTML version deleted]]
2024 Feb 08
12
[Bug 3666] New: sshd crash
https://bugzilla.mindrot.org/show_bug.cgi?id=3666
Bug ID: 3666
Summary: sshd crash
Product: Portable OpenSSH
Version: 8.2p1
Hardware: Other
OS: Linux
Status: NEW
Severity: critical
Priority: P5
Component: sshd
Assignee: unassigned-bugs at mindrot.org
Reporter: